Search

One metalorganic complex [K(cis-syn-cis- dicyclohexyl-18-crown-6)]2[Cu(mnt)2] (mnt = maleonitriledithiolate) has been obtained by the reaction of dicyclohexyl-18-crown-6 with K2mnt and CuCl2·2H2O. The title complex has been characterized by elementary analysis, FT-IR, UV-Vis spectroscopy and x-ray single crystal diffraction. The title complex crystallizes in the triclinic space group P1 with crystallographic data: a = 10.870(6) Å, b = 11.536(6) Å, c = 12.904(7) Å, α = 101.541(10)°, β = 110.573(9)°, γ = 99.441(9)°, V = 1435.2(13) Å3, Z = 1, Dcalcd = 1.350 g/cm3, F(000) = 615, R1 = 0.0641, wR2 = 0.1475. It displays one-dimensional chain-like structure formed by [K(cis-syn-cis- dicyclohexyl-18-crown-6)]+ complex cations and [Cu(mnt)2]2- complex anions through N-K-N interactions. Its electrochemical behavior has also been studied by the cyclic voltammetry. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR]

In the title complex, [Hg2Cl4(C6H18N4)], one HgII ion is coordinated by four N atoms from a tris(2-aminoethyl)amine ligand and one Cl atom of a tetrachloridomercurate group in a distorted trigonal-bipyramidal geometry. The Cl atom occupies an axial position and bridges to a second HgII ion, which is coordinated in a distorted tetrahedral geometry by four Cl atoms. The bonds involving the bridging Cl atom are significantly longer than the other Hg—Cl bonds. In the crystal structure, molecules are linked by intermolecular N-H⋯Cl hydrogen bonds into a two-dimensional network, which is further stabilized by weak intermolecular C-H⋯Cl hydrogen bonds. [ABSTRACT FROM AUTHOR]

The title compound, C15H16N2O, has been synthesized and characterized by X-ray diffraction and FT-IR spectroscopic analysis. The dihedral angle between the aromatic ring planes is 11.17 (2)°. The molecule exhibits an intramolecular OH⋯N hydrogen bond. [ABSTRACT FROM AUTHOR]

The complete title trinuclear CuII complex, [Cu3Cl6(C14H16N3O2)2], is generated by twofold symmetry with one Cu atom lying on the rotation axis. The central Cu atom adopts a distorted tetrahedral CuCl4 geometry. The terminal Cu atom is five-coordinated in a distorted square-pyramidal coordination environment consisting of three N atoms of the ligand, one bridging Cl atom and one terminal Cl atom. Intermolecular CH⋯Cl hydrogen bonds help to establish the packing. [ABSTRACT FROM AUTHOR]

In the title compound, C18H14N4·H2O, the central benzene ring makes dihedral angles of 43.80 (14) and 24.94 (16)° with the two pyridine rings. The water molecule bridges benzene-1,4-diamine molecules via O—H⋯N hydrogen bonds, resulting in the formation of linear chains extending along the [201] direction. [ABSTRACT FROM AUTHOR]

The title compound, C12H12N2S2, was prepared from a condensation reaction of thiophene-2-carboxaldehyde with ethylenediamine in refluxing ethanol. The molecule adopts a Z-shaped conformation, with the two thiophene rings lying on either side of the Csp³-Csp³ bond. The two thiophene rings form a dihedral angle of 11.2 (2)°. The crystal packing is mainly stabilized by van der Waals forces. [ABSTRACT FROM AUTHOR]

The title dinuclear copper complex, [{Cu(C5H15N3)(H2O)}2(C10H8N2)](ClO4)4, has a crystallographically imposed inversion centre. Each CuII atom is coordinated by four N atoms [Cu—N = 2.001 (4)–2.037 (4) Å] and one water mol­ecule [Cu—O = 2.373 (3) Å] in a slightly distorted square-pyramidal geometry. [ABSTRACT FROM AUTHOR]

In the title compound, (C2H10N2)[Zn(C2H8N2)2(H2O)2][Zn(C7H3NO4)2]2·2H2O, the Zn atom (site symmetry 2/ m) in the [Zn(C2H8N2)2(H2O)2]2+ cation is six-coordinated by four N atoms from bidentate ethyl­enediammonium molecules and two water O atoms. The Zn atom (site symmetry 2) in the [Zn(C7H3NO4)2]2− anion is six-coordinated by four O atoms and two N atoms from two tridentate pyridine-2,6-dicarboxyl­ate ligands. An uncoordinated ethyl­enediammonium cation and two water mol­ecules are also present in the structure. The crystal packing is stabilized by O—H⋯O and N—H⋯O hydrogen bonds, forming a three-dimensional network. [ABSTRACT FROM AUTHOR]

The title complex, [Cu2(C4N2S2)2(C2H8N2)2] n, consists of centrosymmetric [Cu(C4N2S2)2]2− anions and [Cu(C2H8N2)2]2+ cations. The CuII atom in each anion shows a slightly distorted square-planar coordination, comprising four S-atom donors from two chelating 2,3-dimercaptobutenedi­nitrile ligands. The CuII atom in the cation is six-coordinated by four N-atom donors from two ethyl­enedi­amine ligands and two N-atom donors from 2,3-dimercaptobutenedi­nitrile, and has an elongated octahedral environment. The asymmetric unit contains one cation and two half-anions. The cations and anions are connected by Cu—N (nitrile) bonds to form a one-dimensional chain along the a axis. The crystal structure is stabilized by hydrogen bonds of the types N—H⋯N and N—H⋯S, forming a three-dimensional network. [ABSTRACT FROM AUTHOR]

In the title complex, [Cd(C2H8N2)3][Cu(C4N2S2)2], the CdII atom has a distorted octahedral geometry. The CuII atom is in a distorted square-planar geometry. Both ions lie on twofold rotation axes. They are not connected covalently. [ABSTRACT FROM AUTHOR]

The title complex, [Cu(S2O3)(C2H8N2)2], exhibits a slightly distorted square-pyramidal geometry. The copper(II) atom is five-coordinated by four N atoms from two ethyl­enedi­amine mol­ecules, and one S-atom from the thio­sulfate anion. The crystal structure is stabilized by weak intermolecular Cu⋯S interactions and N—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the title complex, [La2(C10H10NO3)6(C12H8N2)2]·2H2O, the LaIII atoms are bridged by two terdentate and two bidentate carboxyl­ate groups with an inversion centre between the two LaIII ions. Each La atom is nine-coordinated by two N atoms of 1,10-phenanthroline and seven O atoms belonging to N-acetyl- N-phenyl­glycine mol­ecules, and exhibits distorted tricapped trigonal prismatic geometry. The crystal structure is stabilized by intermolecular O—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the title complex, [La2(C10H10NO3)2(C12H8N2)4(H2O)6](C10H10NO3)2(NO3)2·2H2O, each LaIII ion is nine-coordinated by four N atoms from two bidentate 1,10-phenanthroline ligands and by five O atoms (two from N-acetyl- N-phenyl­glycinate ligands and three from water mol­ecules). The LaIII cations, which exhibit distorted tricapped trigonal prismatic coordination, are bridged by two N-acetyl- N-phenyl­glycinate ligands into a dimeric structure, generated by inversion symmetry. The crystal structure is stabilized by a three-dimensional hydrogen-bond network. [ABSTRACT FROM AUTHOR]

In the title Schiff base complex, [ZnCl2(C10H12NO2)2], the ZnII ion is in a distorted tetra­hedral ZnO2Cl2 coordination environment. [ABSTRACT FROM AUTHOR]

The title compound, trihydrogen hexa­hydroxoocta­deca­oxo­aluminiumhexa­molybdate deca­hydrate, crystallizes from an aqueous solution of potassium molybdate and aluminium(III) chloride. The structure features [Al(OH)6Mo6O18]3− clusters consisting of six edge-sharing MoO6 octa­hedra, which are arranged hexa­gonally around a central {Al(OH)6} octa­hedron. The overall symmetry of the Al(OH)6Mo6O18 unit is . [ABSTRACT FROM AUTHOR]

This article presents information on the molecular structure of the organic compound 1,5-Diphenyl-3-(2-pyridyl)pentane-1,5-dione. For the synthesis of the title compound, C22H19NO2, reaction of pyridine-2-carbaldehyde with acetophenone and NaOH was performed. The bond lengths and angles are of normal values. The crystal packing of the title compound shows no short intermolecular contacts. Acetophenone, pyridine-2-carbaldehyde and NaOH were mixed in an open flask. The product formed out of that mixture was washed with water several times to remove NaOH, and then recrystallized from ethanol.

The title compound, [K(C14H20O5)2][Ni(C3S5)2] or [K(benzo-15-crown-5)2][Ni(dmit)2], consists of KI complex cations with benzo-15-crown-5 ligands and NiIII complex anions with 4,5-dimercapto-1,3-dithiole-2-thione (dmit) ligands. The NiIII atom is coordinated by four S atoms from two dmit ligands in a distorted square-planar geometry, while the K+ cation is coordinated by ten O atoms from two crown ether ligands. [ABSTRACT FROM AUTHOR]

In the crystal structure of the title compound, C10H11NO3, there are O—H⋯O and N—H⋯O hydrogen bonds, connecting the mol­ecules into planes parallel to the bc plane. [ABSTRACT FROM AUTHOR]

The structure of the title amino acid, C10H11NO3, is stabilized by O—H⋯O hydrogen bonds, connecting the mol­ecules into infinite chains along the b axis. [ABSTRACT FROM AUTHOR]

In the title complex, [Co(C6H4O2N)3]·H2O, the cobalt(III) ion shows a distorted octahedral coordination, comprising three N-atom donors and three O-atom donors from three bidentate pyridine-2-carboxyl­ate ligands. The uncoordinated water mol­ecule interacts with nearby carboxyl groups of the pyridine-2-carboxyl­ate ligands by way of O—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]

The title complex, [Zn(C2H8N2)3][Ni(C4N2S2)2], contains a [Zn(C2H8N2)3]2+ complex cation with a distorted octahedral coordination of the Zn atom and an [Ni(C4N2S2)2]2− anion with a slightly distorted square-planar geometry for the NiII atom. The cation occupies a special position on a twofold axis, whereas the anion lies about a crystallographic inversion centre. [ABSTRACT FROM AUTHOR]

The title complex, [Zn(C2H8N2)3][Zn(C4N2S2)2], exists as discrete ions, both of which lie on twofold rotation axes. The [Zn(C2H8N2)3]2+ cation exhibits a slightly distorted octahedral geometry. In the [Zn(C4N2S2)2]2− anion, the ZnII atom is surrounded by two chelating ligands in a distorted tetrahedral geometry. The crystal structure is stabilized by hydrogen bonds of the types N—H⋯N and N—H⋯S. [ABSTRACT FROM AUTHOR]

In the title complex, (C2H10N2)2[Cd(C7H3NO4)3]·6H2O, the CdII atom is nine-coordinated by three pyridine-2,6-di­carboxyl­ate ligands via six O atoms and three N atoms in a distorted tricapped trigonal prismatic structure. A crystallographic twofold rotation axis passes through the Cd atom and three atoms of one pyridine ring, viz. N, the C in the p-position and its attached H atom. The pyridine-2,6-di­carboxyl­ate ligands, ethyl­enedi­ammonium cations and uncoordinated water mol­ecules contribute to the formation of intermolecular hydrogen bonds, forming a three-dimensional network. [ABSTRACT FROM AUTHOR]

In the title compound, [Cu2(C19H24N2O4)2(H2O)2]·2H2O, the asymmetric unit consists of one half of the bis{μ-6,6′-dimethoxy-2,2′-[propane-1,2-diylbis(iminomethylene)]diphenolato}bis[aquacopper(II)] complex and two water molecules. Two CuII centres are bridged through a pair of phenolate groups, resulting in a complex with a centrosymmetric structure, with the centre of inversion at the middle of the Cu2O2 plane. The Cu atoms are in a slightly distorted square-pyramidal coordination environment (τ = 0.07). The average equatorial Cu—O bond length and the axial Cu—O bond length are 1.928 (3) and 2.486 (3) Å, respectively. The Cu—O(water) bond length is 2.865 (4) Å, so the compound could be described as having a weakly coordinating water molecule at each CuII ion and two solvent water molecules per dimetallic unit. The Cu...Cu distance and Cu—O—Cu angle are 3.0901 (10) Å and 87.56 (10)°, respectively. The molecules are linked into a sheet by O—H...O and C—H...O hydrogen bonds parallel to the [001] plane. [ABSTRACT FROM AUTHOR]

The two title dinuclear copper(II) complexes, [Cu2Cl4(C17H20Cl2N2)2], (I), and [Cu2Cl4(C19H22N2O4)2], (II), have similar coordination environments. In each complex, the asymmetric unit consists of one half-molecule and the two copper centres are bridged by a pair of Cl atoms, resulting in complexes with centrosymmetric structures containing Cu(μ-Cl)2Cu parallelogram cores; the Cu...Cu separations and Cu—Cl—Cu angles are 3.4285 (8) Å and 83.36 (3)°, respectively, for (I), and 3.565 (2) Å and 84.39 (7)° for (II). Each Cu atom is five-coordinated and the coordination geometry around the Cu atom is best described as a distorted square-pyramid with a τ value of 0.155 (3) for (I) and 0.092 (7) for (II). The apical Cu—Cl bond length is 2.852 (1) Å for (I) and 2.971 (2) Å for (II). The basal Cu—Cl and Cu—N average bonds lengths are 2.2673 (9) and 2.030 (2) Å, respectively, for (I), and 2.280 (2) and 2.038 (6) Å for (II). The molecules of (I) are linked by one C—H...Cl hydrogen bond into a complex [10 ] sheet. The molecules of (II) are linked by one C—H...Cl and one N—H...O hydrogen bond into a complex [100] sheet. [ABSTRACT FROM AUTHOR]

In the title complex, [NiCl(C9H11NO)2(H2O)3]Cl, the NiII ion is six-coordinated by one Cl atom [Ni—Cl = 2.3712 (11) Å], two O atoms from two 4-(dimethylamino)benzaldehyde ( L) ligands and three water molecules in a distorted octahedral geometry [Ni—O = 2.076 (3)–2.094 (3) Å]. The mean planes of the two L ligands make a dihedral angle of 65.8 (1)°. In the crystal structure, intermolecular O—H...Cl hydrogen bonds link cations and anions into two-dimensional sheets parallel to the ab plane, with the L ligands protruding above and below. [ABSTRACT FROM AUTHOR]

The molecule of the title compound, C23H24N2O2, has a mirror plane passing through the benzimidazole ring system. The molecule adopts a bowed conformation and the two terminal benzene rings subtend a dihedral angle of 34.3 (1)°. Molecules are linked by C—H...π hydrogen bonds, forming an (010) sheet of R44(28) rings. [ABSTRACT FROM AUTHOR]

In the title compound, C20H14Cl2N2, the dihedral angles formed by the benzimidazole ring with the benzene rings of the 4-chlorobenzyl and the 4-chlorophenyl groups are 88.15 (8) and 33.4 (1)°, respectively. The molecules are linked by C—H...Cl hydrogen bonds, forming a C(12) chain along the [010] direction. [ABSTRACT FROM AUTHOR]

In the title compound, C18H22N2O42+·2NO3−, the cation is centrosymmetric. The asymmetric unit consists of one half-cation and one anion. The molecules are linked by N—H...O and C—H...O hydrogen bonds and by dipolar O—C...O—C interactions, forming a chain of edge-fused R44(18) rings and a chain of R22(4) rings. [ABSTRACT FROM AUTHOR]

The title complex, [K2Ni(C4N2S2)2(C12H24O6)2]·C2H4Cl2, consists of two symmetry-equivalent [K(18C6)]+ complex cations (18C6 = 18-crown-6), one centrosymmetric [Ni(i-mnt)2]2− complex anion (i-mnt = 1,1-dicyanoethylene-2,2-dithiolate), and a ClCH2CH2Cl solvent molecule that also lies on an inversion center. The [K(18C6)]+ cations and [Ni(i-mnt)2]2− complex anions form a two-dimensional network through K...N interactions. [ABSTRACT FROM AUTHOR]

The Sn atom in the title complex, [Sn(CH3)3(C6H3BrNO2)(H2O)], is five-coordinate with a distorted trigonal–bipyramidal geometry. The O atom of the carboxylate group occupies one of the axial sites and the O atom of the water molecule occupies the other. Water H atoms are involved in an intermolecular hydrogen-bonded network with the uncoordinated carboxylate O atom and the pyridine N atom. [ABSTRACT FROM AUTHOR]

The molecule of the title complex, [Cu(C15H11N2O2)2(H2O)2], lies on a twofold rotation axis. The crystal structure is based on a network of inter­molecular N—H⋯O=C and O—H⋯O=C inter­actions. [ABSTRACT FROM AUTHOR]

In the title compound, [Ag2(C9H12N4)2]Cl2·0.5H2O, each AgI atom is coordinated by two C atoms of two heterocyclic carbene ligands, displaying a nearly linear geometry. The Ag—Ag separation is quite long, indicating a very weak metal–metal inter­action. [ABSTRACT FROM AUTHOR]

In the title complex, [Sn(CH3)2(C15H12N2O3)], the Sn atom is found in a distorted trigonal–bipyramidal geometry with Sn—O distances of 2.131 (3) and 2.178 (3) Å. Inter­molecular Sn⋯O contacts stabilize the crystal packing. [ABSTRACT FROM AUTHOR]

The title compound, C20H28NO+·Cl−, was synthesized by a condensation reaction. The absolute configuration of the new stereogenic centre (the C atom between the N atom and the phenol ring) was determined as R. The crystal structure is stabilized through N—H⋯Cl and O—H⋯Cl hydrogen bonds and intra­molecular N—H⋯O hydrogen bonding. [ABSTRACT FROM AUTHOR]

In the title compound, [CoNa2(C3H2O4)2(H2O)2] n, a heterobimetallic malonate complex, both CoII and NaI ions have distorted octa­hedral coordination geometries. The CoII ions are located on inversion centres and are surrounded only by carboxyl­ate O atoms, while the NaI ions are coordinated both by water and by carboxyl­ate O atoms. The malonate dianions show an unusual hepta­dentate bridging mode. [ABSTRACT FROM AUTHOR]

In the title compound, C10H10ClN2+·NO3−, the naphthyridinium cations and nitrate anions form cation–anion pairs via a strong N—H⋯O hydrogen bond. [ABSTRACT FROM AUTHOR]

The title complex, [Cu2(C7H5O2)4(C12H10N2O)2], forms a dimer of the paddle-wheel type located on a crystallographic inversion center. The two CuII atoms [Cu—Cu = 2.6377 (11) Å] are connected by four benzoate ligands. The apical positions of the square-pyramidal copper coordination polyhedra are occupied by the N atoms of 2-benzamido­pyridine ligands. The crystal structure is stabilized by π–π stacking involving the phenyl and pyridine groups. [ABSTRACT FROM AUTHOR]

The title compound, C20H26N4, was prepared by a condensation reaction between p-dimethyl­amino­benzaldehyde and ethyl­enediamine. The mol­ecule contains a crystallographically imposed twofold axis of symmetry. [ABSTRACT FROM AUTHOR]

The structure of the title compound, (C5H12N)4[V10O26(CH3O)2], reveals the presence of four protonated piperidin­ium cations and a [{V10O26}(OCH3)2]4− polyanion having an embedded centre of inversion. The compound is distinguished by presenting, in contrast with other anionic deca­vanadates, two meth­oxy groups bridging the outermost V atoms, and it becomes the first example of this type among reported deca­vanadates. [ABSTRACT FROM AUTHOR]

The reaction of bis­(tributyl­tin) oxide with 3-nitro­benzoic acid yields a stable crystalline material with the composition [Sn4O2(C4H9)8(C7H4NO4)4O2], which contains two bridging and two non-bridging (bidentate) 3-nitro­benzoate groups. It is a tetranuclear dimer in which there are two six-coordinate endocyclic and two six-coordinate exocyclic Sn atoms. [ABSTRACT FROM AUTHOR]

In the title compound, C12H9N2+·C7H5O4N−·C12H8N2·C7H4O4N·C2H6O·H2O, the cations are stacked along the b axis to form a column-like structure. The anions, ethanol mol­ecules and water mol­ecules are linked via O—H⋯O and O—H⋯N hydrogen bonds to form a zigzag sheet-like structure. The cationic columns and anionic sheets are alternately arranged along the c axis. [ABSTRACT FROM AUTHOR]

The title compound, {[Ni(C2H8N2)3][Cd(C4N2S2)2]·H2O} n, contains chains of bis­(1,2-dicyano­ethyl­enedithiol­ato)­cadmate(II) complex anions, tri(ethyl­enediamine)nickel(II) cations and uncoordinated water mol­ecules. The CdII centre is in a very distorted CdS6 octa­hedral environment. Three bidentate ethyl­enediamine ligands are coordinated to the NiII atom, resulting in somewhat distorted NiN6 octa­hedra. The polymeric anionic chains, cations and water mol­ecules are linked by hydrogen bonds into a three-dimensional framework. [ABSTRACT FROM AUTHOR]

The title complex, trans-{μ-2,2′-[(1,2-dioxoethane-1,2-diyl)­diimino]­diethano­ato(4−)}bis­[di­aqua­copper(II)] dihydrate, [Cu2(C6H4N2O6)(H2O)4]·2H2O, with a three-dimensional framework, displays a square-pyramidal coordination geometry. The structure consists of a neutral centrosymmetric binuclear unit in which the ox­amide ligand has a trans geometry, is fully deprotonated and acts in a bis-tridentate fashion. [ABSTRACT FROM AUTHOR]

In the title compound, [ZnCl2(C20H25N3O4)]∙0.5H2O, the ZnII ion assumes a trigonal bipyramidal coordination geometry formed by a tridentate amine ligand and two Cl- anions. The tridentate amine ligand chelates the ZnII ion in a meridional configuration. The extensive hydrogen-bonding network helps to stabilize the crystal structure. [ABSTRACT FROM AUTHOR]

The CoII ion in the title complex, [Co(NCS)2(C6H7NO)2], lies on a crystallographic twofold axis and is in a slightly distorted octahedral coordination environment. In the crystal structure, intermolecular O—H⋯S hydrogen bonds link molecules to form a two-dimensional network perpendicular to the c axis. [ABSTRACT FROM AUTHOR]