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Most existing stretchable batteries can generally only be stretched uniaxially and suffer from poor mechanical and electrochemical robustness to withstand extreme mechanical and environmental challenges. A highly efficient bifunctional electrocatalyst is herein developed via the unique self‐templated conversion of a guanosine‐based supramolecular hydrogel and presents a fully integrated design strategy to successfully fabricate an omnidirectionally stretchable and extremely environment‐adaptable Zn–air battery (ZAB) through the synergistic engineering of active materials and device architecture. The electrocatalyst demonstrates a very low reversible overpotential of only 0.68 V for oxygen reduction/evolution reactions (ORR/OER). This ZAB exhibits superior omnidirectional stretchability with a full‐cell areal strain of >1000% and excellent durability, withstanding more than 10 000 stretching cycles. Promisingly, without any additional pre‐treatment, the ZAB exhibits outstanding ultra‐low temperature tolerance (down to −60 °C) and superior waterproofness, withstanding continuous water rinsing (>5 h) and immersion (>3 h). The present work offers a promising strategy for the design of omnidirectionally stretchable and high‐performance energy storage devices for future on‐skin wearable applications. [ABSTRACT FROM AUTHOR]

The temporal and spatial control of natural systems has aroused great interest for the creation of synthetic mimics. By using boronic ester based dynamic covalent chemistry and coupling it with an internal pH feedback system, we have developed a new chemically fueled reaction network for non‐equilibrium supramolecular chiral G‐quadruplex hydrogels with programmable lifetimes from minutes, to hours, to days, as well as high transparency and conductivity, excellent injectability, and rapid self‐healing properties. The system can be controlled by the kinetically controlled in situ formation and dissociation of dynamic boronic ester bonds between the cis‐diol of guanosine (G) and 5‐fluorobenzoxaborole (B) in the presence of chemical fuels (KOH and 1,3‐propanesultone), thereby leading to a precipitate‐solution‐gel‐precipitate cycle under non‐equilibrium conditions. A combined experimental‐computational approach showed the underlying mechanism of the non‐equilibrium self‐assembly involves aggregation and disaggregation of right‐handed helical G‐quadruplex superstructures. The proposed dynamic boronic ester‐based non‐equilibrium self‐assembly strategy offers a new option to design next‐generation adaptive and interactive smart materials. [ABSTRACT FROM AUTHOR]

Ionic conducting eutectogels have attracted enormous attention as an alternative to the conventional temperature‐intolerant hydrogels and costly ionic liquid gels in constructing flexible electronic devices. However, current eutectogels prepared via cross‐linked polymer or low‐molecular‐weight gelators suffer from limited stretchability and insufficient surface‐adaptive adhesion. Herein, a low‐molecular‐weight supramolecular network is introduced into a covalent polymer network in a eutectogel architecture, and a novel supramolecular‐polymer double‐network (SP‐DN) strategy is demonstrated to fabricate conductive SP‐DN eutectogels with high stretchability (>4000% elongation) and toughness (≈800 J m−2), as well as self‐healing, self‐adhesive and anti‐freezing/anti‐drying characteristics. These unique features lead to the successful realization of SP‐DN eutectogels in wearable self‐adhesive strain sensors, which can conformally deform with the skin and dynamically monitor body movements with high sensitivity and long‐term stability over a wide temperature range (−40 to 60 °C). Furthermore, the strain sensors can accurately detect body movements along two opposite directions (bend up or bend down), which are rarely reported in the literature. Distinct from the widely explored polymer double‐network (P‐DN) hydrogels, the developed SP‐DN eutectogel platform is capable of well‐regulating molecular‐scale noncovalent and covalent interactions, providing a paradigm for the creation of smart soft materials with versatile performance and high environmental adaptability. [ABSTRACT FROM AUTHOR]

Supramolecular eutectogels, an emerging class of materials that have just developed very recently, offer a new opportunity for generating functional supramolecular gel materials in biocompatible anhydrous or low‐water media. As the first example of supramolecular G4 eutectogels, complexes of natural guanosine and H3BO3 exhibited excellent gelation capacity in choline chloride/alcohol deep eutectic solvents. The as‐prepared supramolecular eutectogels displayed unexpected solvent‐induced chiral inversion and significantly high ionic conductivity (up to 7.78 mS cm−1), as well as outstanding thixotropic/injectable properties, high thermal stability and excellent electrochromic activity. These features make these versatile supramolecular G4 eutectogels promising candidates for developing next‐generation flexible electronics with low environmental impact. [ABSTRACT FROM AUTHOR]

Iron(III) oxide (Fe2O3) has attracted great attention, owing to its abundant natural resources, environmental friendliness, and low cost. Nevertheless, this material possesses an inferior rate capability and a cycle stability that is similar to most transition metal oxides. Graphene, with a one‐atom‐thick 2D structure, possesses superior mechanical properties, electrical conductivity, and stability, and excellent electrical and electrochemical behaviors. The hierarchical structure of graphene/Fe2O3 composites provides a porous conductive network, close contact between the graphene and Fe2O3, a stress buffer space for charge transport, and superior structural stability. This composite consists of high conductivity graphene with interconnected Fe2O3, thus exposing abundant active sites for redox reactions and providing sufficient contacts with the electrolyte. Consequently, materials composed of Fe2O3 and graphene have been widely explored, owing to their outstanding synergistic effects. Graphene can effectively limit the volume expansion and agglomeration of Fe2O3, whereas Fe2O3 can prevent the re‐stacking of graphene at the same time. This article mainly discusses the preparation of Fe2O3/graphene materials and their applications, including supercapacitors, rechargeable batteries, catalysis, and so forth. In addition, the perspectives and challenges of Fe2O3/graphene materials for different applications are also discussed. [ABSTRACT FROM AUTHOR]

To realize the effective conversion of renewable energy through water decomposition, efficient electrocatalysts for the oxygen evolution reaction (OER) are essential. In this article, PBA@POM was successfully prepared with a Prussian blue analogue (PBA) as the initial structure. A facile hydrothermal process is reported for obtaining PBA@POM by etching the cubic PBA with a strong Brønsted acid, H3PMo12O40 (HPMo). The hollow cube structure not only exposes more active sites but also promotes electron transport, which results in excellent electrocatalytic activity for the OER. Compared with the PBA, which initially simply adhered to POM, the optimum PBA@POM hybrids display remarkably enhanced OER catalytic activity, with an almost constant overpotential of 440 mV at a current density of 10 mA cm−2 and a small Tafel slope (23.45 mV dec−1). The facilely prepared PBA@POM with good electrochemical activity and stability promises great potential for the OER. [ABSTRACT FROM AUTHOR]

Three LnIII‐based metal‐organic frameworks (MOFs), namely [(Me2NH2)[Ln(OBA)2](Hatz)(H2O)1.5]n [Ln = Dy (1), Er (2), Ho (3); H2OBA = 4, 4'‐oxybis(benzoate) acid, Hatz = 3‐amino‐1,2,4‐triazole], were synthesized with Hatz as the template. In the structure of the three MOFs, the dinuclear LnIII nodes are bridged by four oxygen atoms from syn, syn‐carboxylate groups and this model result in a long distance between Dy–Dy, about 4.143(7) Å. In addition, the terminal carboxylate groups force a sandwich‐like coordination environment. Slow relaxation of the magnetization can be observed for 1, indicative of a single‐molecule magnet (SMM) behavior. Three unusual LnIII‐based metal‐organic frameworks (MOFs) were successfully obtained, in which the dinuclear LnIII nodes are bridged by four oxygen atoms from syn, syn‐carboxylate groups. This model result in a long distance between Ln–Ln. But slow relaxation of the magnetization can be observed, indicative of a single‐molecule magnet (SMM) behavior. [ABSTRACT FROM AUTHOR]

As the first example of a photocatalytic system for splitting water without additional cocatalysts and photosensitizers, the comparatively cost-effective Cu2I2-based MOF, Cu-I-bpy (bpy=4,4′-bipyridine) exhibited highly efficient photocatalytic hydrogen production (7.09 mmol g−1 h−1). Density functional theory (DFT) calculations established the electronic structures of Cu-I-bpy with a narrow band gap of 2.05 eV, indicating its semiconductive behavior, which is consistent with the experimental value of 2.00 eV. The proposed mechanism demonstrates that Cu2I2 clusters of Cu-I-bpy serve as photoelectron generators to accelerate the copper(I) hydride interaction, providing redox reaction sites for hydrogen evolution. The highly stable cocatalyst-free and self-sensitized Cu-I-bpy provides new insights into the future design of cost-effective d10-based MOFs for highly efficient and long-term solar fuels production. [ABSTRACT FROM AUTHOR]

Metal-organic frameworks (MOFs) represent a promising class of porous materials. However, MOFs show poor processability that impedes their full potential in applications. This work develops a composite strategy to skillfully load MOFs on a polymer plate to afford processability for these powder materials. A predesigned mesoporous MOF with active −NH2 groups around the pore walls was prepared and its copolymerization with the −NCO groups of macromonomers (polyurethane acrylate) could be facilely induced by an initiator under mild conditions. Notably, the target MOF-polymer composite is transparent, elastic, and shows enhanced Fe3+ detection compared with that of the individual MOF functional component. This result can be ascribed to the synergistic effect of the composite with newly formed chemical bonds between the MOF particle and polymer matrix. [ABSTRACT FROM AUTHOR]

Two isostructural CoII-based metal-organic frameworks (MOFs) with the opposite framework charges have been constructed, which can be simply controlled by changing the tetrazolyl or triazolyl terminal in two bifunctional ligands. Notably, the cationic MOF 2 can adsorb much more C2H2 than the anionic MOF 1 with an increase of 88 % for C2H2 uptake at 298 K in spite of more active nitrogen sites in 1. Theoretical calculations indicate that both nitrate and triazolyl play vital roles in C2H2 binding and the C2H2 adsorption isotherm confirms that the enhanced C2H2 uptake for 2 (225 and 163 cm3g−1 at 273 and 298 K) is exceptionally high for MOF materials without open metal sites or uncoordinated polar atom groups on the frameworks. [ABSTRACT FROM AUTHOR]

To further explore the coordination possibilities of the flexible tripodal ligand, 4,4′,4′′-(benzene-1,3,5-triyl-tris(oxy))tribenzoic acid (H3BTTB), two solvent-controlled three-dimensional (3D) manganese(II) coordination polymers, [Mn3(BTTB)2(H2O)4](H2O)2 ( 1) and [Mn3(BTTB)2(DMF)2](DMF)2 ( 2), were synthesized and characterized. Single crystal X-ray diffraction analysis indicates that in the MnII complexes the BTTB ligands exhibit two coordination modes, which have not been reported previously. Complexes 1 and 2 involve different one-dimensional (1D) rod-shaped metal-carboxylate secondary building units (SBUs). The 1D SBUs are further extended to afford two different three-dimensional (3D) frameworks with similar flu topology via linkage of the BTTB ligands. The results demonstrate that the reaction solvent as well as conformation and coordination mode of BTTB ligands play key roles on the formation of the final framework structures. Additionally, their luminescent properties were investigated. [ABSTRACT FROM AUTHOR]

A (6, 14)-connected metal-organic framework (MOF), namely [Co9(μ3-OH)2(CPT)10(HCOO)6] n ( 1) [HCPT = 4-(4-carboxyphenyl)-1, 2,4-triazole], was synthesized using custom-designed bifunctional triazolate-carboxylate organic linkers and CoII salts. The framework exhibits two types of highly connected Co3 and Co6 cluster moieties with distinct arrangement, which were generated in situ. The combination of these building units results in an unusual (6, 14)-connected structure, which has been rarely observed in MOF chemistry. This MOF was characterized by single X-ray diffraction, PXRD, and TGA. Furthermore, its magnetic properties were investigated. [ABSTRACT FROM AUTHOR]

Three lanthanide coordination polymers incorporating 5-hydroxyisophthalate ( L) and phen ligands, [Eu( L)(phen)] n ( 1) and [ Ln( L)(phen)2] n [ Ln = Sm ( 2) and Pr ( 3)], were synthesized. X-ray structural analysis reveals that 1 features a (3,6)-connected 3D rtl topology. Complexes 2 and 3 are isostructural and have 2D sheets with 63 topology. Comparison of the structural differences between 1 and 2 (or 3) suggests that the different metal sources play an important role in the formation of such coordination networks. Compounds 1 and 2 show photoluminescence and their emission properties are closely related to their corresponding central LnIII atoms. [ABSTRACT FROM AUTHOR]

A unique AlIII-based metal-organic framework (467-MOF) with two types of square channels has been designed and synthesized by using a flexible tricarboxylate ligand under solvothermal conditions. 467-MOF exhibits superior thermal and chemical stability and, moreover, shows high CO2 sorption selectivity over H2, with a selectivity, based on the ideal adsorbed solution theory (IAST) of approximately 45 at 273 or 293 K. Furthermore, its solvent-dependent photoluminescence makes it an applicable sensor in the detection of nitrobenzene explosives through fluorescence quenching. [ABSTRACT FROM AUTHOR]

A promising alternative strategy for designing mesoporous metal-organic frameworks (MOFs) has been proposed, by modifying the symmetry rather than expanding the length of organic linkers. By means of this approach, a unique MOF material based on the target [Zn8(ad)4] (ad=adeninate) clusters and C3-symmetric organic linkers can be obtained, with trigonal microporous (ca., 0.8 nm) and hexagonal mesoporous (ca., 3.0 nm) 1D channels. Moreover, the resulting 446-MOF shows distinct reactivity to transition and lanthanide metal ions. Significantly, the transmetalation of CoII or NiII on the ZnII centers in 446-MOF can enhance the sorption capacities of CO2 and CH4 (16-21 %), whereas the impregnation of EuIII and TbIII in the channels of 446-MOF will result in adjustable light-emitting behaviors. [ABSTRACT FROM AUTHOR]

Hydrothermal reactions of Cd(OAc)2 ·2H2O with 1,2-naphthalic anhydride in the absence/presence of different rigid/flexible bis(pyridyl) co-ligands, produce three distinct coordination polymers, namely [Cd(ndc)] n ( 1), {[Cd5(ndc)4(bpp)2(OH)2](H2O)4} n ( 2), and [Cd5(ndc)4(bpy)2(OH)2] n ( 3) [ndc = 1,2-naphthalenedicarboxylate, bpp = 1,3-bis(4-pyridyl)propane, and bpy = 4,4′-bipyridine]. Complex 1 contains dinuclear [Cd2O2] clusters as secondary building units (SBUs) and shows a two-dimensional (2D) kgd network. Complexes 2 and 3 possess one-dimensional (1D) chains based on pentanuclear [Cd5(μ3-OH)2(COO)2] units as SBUs, which are further extended to afford 2D sql sheet via flexible bpp in 2 and three-dimensional (3D) pcu network via rigid bpy in 3, respectively. The structural diversities indicate that the bis(pyridyl) co-ligands with different flexibility play a key role on the formation of the final supramolecular structures. The complexes were characterized by X-ray crystallographic, IR, elemental, thermal stability, and powder X-ray diffraction analyses. In addition, the photoluminescent properties in solid state were also investigated. [ABSTRACT FROM AUTHOR]

Hydroxyl groups in the coordination complex {[Eu( L)3(phen)]·H2O}2 ( L = 6-hydroxy-1-naphthoate and phen = 1,10-phenanthroline) were used to react with NCO functional groups of isophorone diisocyanate in the presence of dibutyltin dilaurate. A series of new luminescent EuIII-complex-polyurethane acrylate materials, poly(EuIII-complex-polyurethane methacrylate (PUA complex)), were prepared through in situ polymerization of polyurethane acrylate macromonomers and the resulting material was characterized by X-ray diffraction, IR spectra, thermogravimetry analysis, dynamic mechanical analysis, and fluorescence spectroscopy. The result indicates that both EuIII complex and PUA complex can emit characteristic fluorescence of EuIII ion. Moreover, the emission intensity was enhanced under the same experiment condition when the content of EuIII complex in the PUA complex was increased. In addition, we have not found the fluorescence quenching in this work even the content of EuIII complex was increased to 5 wt %. Such rare-earth complex-polyurethane acrylate hybrid materials are suitable for the photoluminescent applications. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 [ABSTRACT FROM AUTHOR]

The authors would like to correct Figure 4 as follows: 1) The correct label for the vertical axis in Figure 4b is "Overpotential/mV" instead of "Overpotential/V". Hence, the correct label for the vertical axis is "Current density (j/mA cm SP -2 sp )." (a) LSVs with a sweep rate of 5 mV s SP -1 sp for PBA, HPMo and PBA@POM; (b) Tafel plots in the linear regions for PBA, HPMo and PBA@POM; (c) the raw LSV curve (no iR compensation) and the real LSV curve (95 % iR compensation) of P3. [Extracted from the article]

The rational preparation of mesoporous metal – organic frameworks (MOFs) represents a great challenge for their intrinsic resistance of crystalline lattice extension to form large cavities. In their Full Paper on page 9713 ff., M. Du, C. ‐ S. Liu et al. report a mesoporous ZnII coordination framework designed by a new strategy of ligand symmetry modulation, which shows unique dual reactivity to transition and lanthanide metals via cation exchange or guest inclusion. Moreover, the modified MOFs materials possess enhanced gas uptake capacities and adjustable light emissions. [ABSTRACT FROM AUTHOR]

The title complex, [Eu(2)(C(11)H(7)O(3))(6)(C(12)H(8)N(2))(2)]·2H(2)O, has a centrosymmetric binuclear cage structure in which the two Eu(III) ions are both nine-coordinated and bridged by 6-hy-droxy-1-naphthoate (L) ligands, with an Eu⋯ Eu separation of 4.1594 (4) Å. The remaining coordination sites are occupied by two N atoms from one 1,10-phenanthroline (phen) and two O atoms from an L ligand. The six 6-hydr-oxy-1-naphthoate groups coordinate each Eu(III) atom in three different ways, namely μ(2)-η(1):η(1)-bridging, μ(1)-η(1):η(1)-chelating, and μ(2)-η(1):η(2)-chelating/bridging modes. Adjacent discrete dinuclear units are linked into a two-dimensional sheet parallel to (011) by inter-molecular O-H⋯O hydrogen-bonding inter-actions. The sheets are cross-linked by water mol-ecules, forming a three-dimensional network. In addition, π-π stacking inter-actions, with a centroid-centroid separation of 3.547 (2) Å are observed.

In the title coordination polymer, [Hg(2)Cl(4)(C(6)H(12)N(2))](n), each Hg(II) center within the chain is four-coordinated by one terminal Cl atom, two bridging μ(2)-Cl atoms, and one N-atom donor from a μ(2)-1,4-diaza-bicyclo-[2.2.2]octane (μ(2)-daco) ligand in a distorted tetra-hedral geometry. The daco ligand acts as an end-to-end bridging ligand and bridges adjacent Hg(II) centers, forming a chain running along [001]. Weak C-H⋯Cl hydrogen-bonding inter-actions link the chains into a three-dimensional network. Comparison of the structural differences with previous findings suggests that the space between the two N donors, as well as the skeletal rigidity in N-heterocyclic linear ligands, may play an important role in the construction of such supra-molecular networks.

In the title centrosymmetric binuclear Ag(I )complex, [Ag(2)(C(12)H(10)N(4))(2)](ClO(4))(2), each Ag(I) center is two-coordinated by one pyridine and one benzotriazole N-donor atom of two inversion-related 1-(2-pyridylmeth-yl)-1H-benzotriazole (L) ligands. This forms a unique box-like cyclic dimer with an intra-molecular Ag⋯Ag separation of 4.479 (2) Å. Inter-molecular C-H⋯O hydrogen-bonding inter-actions, involving uncoordinated ClO(4) (-) ions, link the binuclear units, forming a two-dimensional network parallel to (10).

The title complex, [Cd(2)(C(11)H(7)O(3))(4)(C(12)H(8)N(2))(2)]·4H(2)O, has a centrosymmetric binuclear structure in which two Cd(II) atoms are both six-coordinated and bridged by 6-hydroxy-naphthalene-1-carboxyl-ate ligands, with a Cd⋯Cd separation of 3.671 (1) Å. The remaining coordination sites are occupied by two N atoms of a 1,10-phenanthroline ligand and two O atoms of a 6-hydroxy-naphthalene-1-carboxyl-ate ligand. The crystal packing is stabilized by O-H⋯O hydrogen-bonding inter-actions.

To further investigate the relationship between the structures of benzotriazol-1-yl-based pyridyl ligands and their complexes, a new linear one-dimensional Hg(II) coordination polymer, [HgCl(2)(C(12)H(10)N(4))](n), with the 1-(2-pyridylmethyl)-1H-benzotriazole (L) ligand was obtained through the reaction of L with HgCl(2). In this complex, each Hg(II) center within the one-dimensional chain is coordinated by two chloride anions as well as by one pyridine and one benzotriazole N-atom donor of two distinct L ligands in a distorted tetrahedral geometry, forming a linear one-dimensional chain running along the [010] direction. Weak C-H...pi and pi-pi stacking interactions link the one-dimensional motifs to generate an overall two-dimensional network parallel to the (100) plane. Comparison of the structural differences with previous findings suggests that the presence of different metal centers may plays an important role in the construction of such supramolecular frameworks.

As part of a study on the effect of different counter-anions on the self-assembly of coordination complexes, a new dinuclear Ag(I) complex, [Ag(2)(C(14)H(12)N(4))(2)](CF(3)SO(3))(2), with the 3-[3-(2-pyridyl)pyrazol-1-ylmethyl]pyridine (L) ligand was obtained through the reaction of L with AgCF(3)SO(3). In this complex, each Ag(I) center in the centrosymmetric dinuclear complex cation is coordinated by two pyridine and one pyrazole N-atom donor of two inversion-related L ligands in a trigonal planar geometry. This forms a unique box-like cyclic dimer with an intramolecular nonbonding Ag...Ag separation of 6.379 (7) A. Weak Ag...CF(3)SO(3) and C-H...X (X = O and F) hydrogen-bonding interactions, together with pi-pi stacking interactions, link the complex cations along the [001] and [1\overline{1}0] directions, respectively, generating two different one-dimensional chains and then an overall two-dimensional network of the complex running parallel to the (110) plane. Comparison of the structural differences with previous findings suggests that the presence of different counter-anions plays an important role in the construction of such supramolecular frameworks.

The title complex, [Er(2)(C(15)H(9)O(2))(6)(C(12)H(8)N(2))(2)], has a centrosymmetric binuclear cage structure in which the two Er(III) atoms are both nine-coordinated and are bridged by four bulky anthracene-9-carboxylate (L) ligands, with a nonbonding Er...Er separation of 3.9041 (2) A. The L groups coordinate each Er(III) atom in three different ways. The results reported here reveal that the bulky anthracene skeleton of the L ligand plays an important role in the formation of the complex by virtue of intra- and intermolecular pi-pi stacking and C-H...pi interactions.

In the title compound, [PdCl(2)(C(19)H(15)N(3))], the Pd(II) centre is four-coordinated by two N-atom donors from one 1-[3-(2-pyrid-yl)pyrazol-1-ylmeth-yl]naphthalene (L) ligand and by two Cl atoms in a distorted square-planar coordination geometry. In the crystal structure, adjacent Pd(II) mononuclear units form inter-molecular C-H⋯π inter-actions involving the benzene and pyridine rings of different L ligands and π-π stacking inter-actions between the pyrazolyl-pyridine and naphthalene rings of neighbouring L ligands, with a centroid-centroid separation of 3.522 (1) Å.

In the title polymeric compound, [Mn(N(3))(2)(C(13)H(11)N(3))(2)](n), each Mn(II) centre is six-coordinated in an octahedral geometry by six N atoms from four 1-(4-pyridylmeth-yl)-1H-benzimidazole (L) ligands and two azide anions (N(3) (-)). Each of the Mn(II) ions lies on an inversion centre. The L ligands and N(3) (-) anions bridge adjacent Mn(II) centres, generating a polymeric chain running along the [110] direction. Adjacent polymeric chains are arranged in a two-dimensional network parallel to the (001) plane, linked by C-H⋯N hydrogen bonds.

The title complex, [La(2)(C(15)H(9)O(2))(6)(C(10)H(8)N(2))(2)], has a centrosymmetric binuclear cage structure in which two La(III )atoms are both nine-coordinated and bridged by four anthracene-9-carboxyl-ate ligands, with an La⋯La separation of 4.0880 (4) Å. The remaining coordination sites are occupied by two N atoms of a 2,2'-bipyridine (bipy) and two O atoms of an anthracene-9-carboxyl-ate ligand. The six anthracene-9-carboxyl-ate groups coordinate each La(III )atom in three different ways. Adjacent discrete dinuclear units are arranged into a one-dimensional chain along the [111] direction by inter-molecular π-π stacking inter-actions, with a centroid-centroid separation of 3.704 (7) Å.

In the title coordination polymer, [Cu(C11H7O2)(OH)(H2O)]n, the Cu(II) center is five-coordinated by two O atoms from two different naphthalene-1-carboxylate (L) ligands, one O atom from one coordinated water molecule and two O atoms from two hydroxide anions. L ligands and hydroxide anions jointly bridge adjacent Cu(II) centers to generate a one-dimensional chain along the b-axis direction. The results reveal that the steric bulk of the naphthalene ring system in L may play an important role in the formation of the title complex.

The title compound, C(26)H(16)N(2)O(2), is a potential linear bridging O-donor ligand comprising bulky acridine N-oxide ring systems. Weak intermolecular C-H...O hydrogen-bonding interactions link adjacent molecules to form extended chains. The structure also contains intermolecular C-H...pi interactions.