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High resolution IR spectra of the linear HCCCN-HCCH and HCN-HCCCCH hydrogen bonded complexes have been obtained using optothermal detection molecular beam techniques. Two vibrational bands have been observed for each complex, which correspond to the terminal "free" C-H stretch vibrations ν[SUB2])of the cyano units and the hydrogen bonded vibrations (ν[SUB3])of the acetylenic CH stretches. For both complexes, accurate molecular constants have been obtained. Furthermore, predissociation lifetimes for the ν[SUB3] = 1 states of the both complexes have been determined. The results are compared with those of the linear HCN-HCCH complex obtained by Block et al. [Chem. Phys. 139, 15 (1989)]. [ABSTRACT FROM AUTHOR]

The influence of solute-solute interactions on hormone retention during nanofiltration (NF) was quantified and mechanisms underlying retention identified. A new approach to predict both the mass of hormone sorbed to organic matter and the retention of hormone influenced by solute-solute interactions was applied. Laboratory-scale experiments were carried out in a cross-flow filtration system examining organic matter concentration, solution pH, and hormone type. Solute-solute interactions between HA and estrone improved estrone retention while decreasing estrone adsorption to membranes. HA concentration determined the amount of estrone bound to HA and hence affected estrone retention based on the mechanism of size exclusion. The solution pH influenced both solute-solute as well as solute-membrane interactions. Solute-solute interactions were most important below the pKa of estrone, whereas charge repulsion between estrone and negative functional groups of the membrane dominated estrone retention above the pKa. Of the four hormones studied, progesterone had the greatest affinity for both HA and NF membrane, which was attributed to hydrogen bonding ability. Using partition coefficients KOM from solid -phase microextraction (SPME) resulted in very good agreement between predicted and experimental retention. [ABSTRACT FROM AUTHOR]

In the cation of the title compound, [Cu(C12H8N2)2(C4H8-N2O2)](NO3)2·2H2O, the Cu atom has a distorted octahedral coordination formed by six N atoms from one dimethylglyoxime and two 1,10-phenanthroline ligands. In the crystal structure, components are linked into a three-dimensional framework by O—H⋯O and C—H⋯O hydrogen bonds and π-π stacking interactions [centroid-centroid distance 3.592 (4) Å]. [ABSTRACT FROM AUTHOR]

In the polymeric title complex, [Ni(C2H3O2)2(C12H8N2)]n , NiII ions are bridged by single syn-anti acetate ligands. Each Ni atom is five-coordinated by two 1,10-phenanthroline N atoms and three O atoms of acetate ligands in a distorted square-pyramidal coordination geometry. In the crystal structure, C—H⋯O hydrogen bonds result in the formation of a polymeric ribbon structure. [ABSTRACT FROM AUTHOR]

The title compound, [Co(C2H3O2)2(C12H8N2)]n , is a polymeric complex involving bridging of CoII ions by single syn-anti acetate ligands. Each Co atom is five-coordinated by two 1,10-phenanthroline N atoms and three O atoms of acetate ligands within a bipyramidal coordination geometry. In the crystal structure, C—H⋯O hydrogen bonds result in the formation of a polymeric ribbon structure. [ABSTRACT FROM AUTHOR]

The title compound, [Co(C2H3O2)2(C12H8N2)]n, is a polymeric complex involving bridging of CoII ions by single syn-anti acetate ligands. Each Co atom is five-coordinated by two 1,10-phenanthroline N atoms and three O atoms of acetate ligands within a bipyramidal coordination geometry. In the crystal structure, CH⋯O hydrogen bonds result in the formation of a polymeric ribbon structure. [ABSTRACT FROM AUTHOR]

In the crystal structure of the title compound, [Eu2(C8H8NO2)6(C12H8N)2]n, the EuIII atoms are bridged by two tridentate, two bidentate and four mondentate carboxylate groups with an inversion centre between the two EuIII ions of this dinuclear structural unit. Each Eu atom is nine-coordinated by two 1,10-phenanthroline N atoms and seven O atoms of four anilinoacetate ligands. In the crystal structure, the chains are linked by C—H⋯N and C—H⋯O hydrogen bonds into a polymeric ribbon structure. [ABSTRACT FROM AUTHOR]

The HCCCN–HCN and HCCCN–HF hydrogen bonded dimers have been investigated using optothermal techniques. Accurate molecular constants for both complexes are reported here and comparisons with similar complexes are made. [ABSTRACT FROM AUTHOR]

The IR spectrum of the HCCCN dimer has been studied using the optothermal technique. Both the ν1 and ν2 fundamentals have been recorded. Several hot bands pertaining to these two bands were also observed. The ν1 band and the ν1+ν17-ν17 hot band have been analyzed to yield accurate molecular constants for both the upper and the lower states. The structure of the HCCCN dimer is determined to be linear. The redshift of the ν1 dimer band (outside C–H stretch) from the corresponding monomer band is 2.95 cm-1, while the red shift of the inside C–H stretching fundamental band ν2 is about 67 cm-1. The predissociation lifetime of the ν1=1 state is in the range from 90 μs to 16 ns, while the predissociation lifetime of the ν2=1 state is about 450 ps. All observed hot bands which involve the ν2 vibration show narrower line widths than the fundamental ν2 band. An explanation of this phenomenon is offered which involves the angular dependence of the dynamical coupling between the inside C–H stretching and the predissociation coordinate. [ABSTRACT FROM AUTHOR]

In the crystal structure of the title compound, [La2(C8H8NO2)6(C12H8N2)2] n, the LaIII atoms are bridged by two tridentate, two bidentate and four mondentate carboxylate groups with an inversion centre between the two LaIII ions. Each La atom is nine-coordinated by two 1,10-phenanthroline N atoms and seven O atoms of four anilinoacetate ligands. In the crystal structure, the chains are linked by hydrogen bonds into a polymeric sheet structure. [ABSTRACT FROM AUTHOR]

The asymmetric unit of the title compound, [Cu(H2O)6](C7H7O3S)2, contains one half-cation and one anion; the Cu atom lies on an inversion centre. In the crystal structure, intermolecular O—H...O and O—H...S hydrogen bonds result in the formation of a supramolecular network structure; an intramolecular C—H...O hydrogen bond is also present. [ABSTRACT FROM AUTHOR]

The asymmetric unit of the title compound, [Cr(H2O)6](C7H7O3S)2, contains one half-cation and one anion; the Cr atom lies on an inversion centre. In the crystal structure, intermolecular O—H...O and O—H...S hydrogen bonds result in the formation of a supramolecular network; an intramolecular C—H...O hydrogen bond is also present. [ABSTRACT FROM AUTHOR]

The asymmetric unit of the title compound, [Mn(H2O)6](C7H7O3S)2, contains one half-cation and one anion; the Mn atom lies on an inversion centre. In the crystal structure, intermolecular O—H...O and O—H...S hydrogen bonds result in the formation of a supramolecular network structure; an intramolecular C—H...O hydrogen bond is also present. [ABSTRACT FROM AUTHOR]

In the crystal structure of the title complex, C7H3FN2O6·NH3, the uncoordinated ammonia molecule interacts with nearby nitro and carboxyl groups and the F atom of the 3,5-dinitro-2-fluorobenzoic acid by way of N—H...O, N—H...F and O—H...N hydrogen bonds. These hydrogen bonds lead to a supramolecular network structure. [ABSTRACT FROM AUTHOR]

In the crystal structure of the title complex, C7H7NO3·NH3, intermolecular N—H...O, N—H...N and O—H...N hydrogen bonds result in the formation of a supramolecular network structure. [ABSTRACT FROM AUTHOR]

The title complex, C7H4FN3O5·H2O, contains one 2-fluoro-3,5-dinitrobenzamide molecule and one water molecule. In the crystal structure, O—H...O, O—H...F and N—H...O hydrogen bonds result in the formation of a supramolecular network structure. [ABSTRACT FROM AUTHOR]

The NdIII atom in the title complex, [Nd(C9H9O2)3(C12H8N2)], is coordinated by two N atoms of the 1,10-phenanthroline (phen) ligand and four O atoms of the three 3-phenylpropanoate ligands. This mononuclear complex is further extended into a supramolecular network structure via nonclassical hydrogen bonds between CH groups of 1,10-phenanthroline or 3-phenylpropanoate and O atoms of neighbouring 3-phenylpropanoate molecules. [ABSTRACT FROM AUTHOR]

In the molecule of the title compound, [Ni(NCS)2(C10H8N2)2], the NiII atom is six-coordinated by the four N atoms of two 2,2′-bipyridyl ligands and the two N atoms of two thiocyanate ligands, in a distorted octahedral arrangement. In the crystal structure, intramolecular C—H...N hydrogen bonds and π–π stacking interactions, with a centroid–centroid distance of 3.545 (2) Å, lead to a supramolecular network structure. [ABSTRACT FROM AUTHOR]

In the molecule of the title compound, [Cu(NCS)2(C10H8N2)2], the CuII atom is six-coordinated by the four N atoms of two 2,2′-bipyridyl ligands and the two N atoms of two thiocyanate ligands, in a distorted octahedral arrangement. In the crystal structure, intramolecular C—H...N and intermolecular C—H...S hydrogen bonds and π–π stacking interactions, with a centroid–centroid distance of 3.573 (2) Å, lead to a supramolecular network structure. [ABSTRACT FROM AUTHOR]

In the molecule of the title compound, [Zn(NCS)2(C10H8N2)2], the ZnII atom is six-coordinated by the four N atoms of two 2,2′-bipyridyl ligands and the two N atoms of two thiocyanate ligands, in a distorted octahedral arrangement. In the crystal structure, intramolecular C—H...N and intermolecular C—H...S hydrogen bonds and π–π stacking interactions, with a centroid–centroid distance of 3.569 (5) Å, lead to a supramolecular network structure. [ABSTRACT FROM AUTHOR]

The LaIII atom in the title complex, [La(C9H9O2)3(C12H8N2)], is coordinated by two N atoms of a 1,10-phenanthroline (phen) ligand and four O atoms of three phenylpropanoate ligands. This mononuclear complex is further extended into a supramolecular network structure via nonclassical hydrogen bonds between CH groups of 1,10-phenanthroline or phenylpropanoate and O atoms of neighbouring phenylpropanoate ligands. [ABSTRACT FROM AUTHOR]

In the molecule of the title compound, [Ce(C8H7O3)3(C12H8N2)], the CeIII atom is six-coordinated by two N atoms of the 1,10-phenanthroline (phen) ligand and four O atoms of the three phenoxyacetate ligands. In the crystal structure, intermolecular C—H...O hydrogen bonds lead to a supramolecular network. [ABSTRACT FROM AUTHOR]

In the molecule of the title compound, [Nd(C8H7O3)3(C12H8N2)], the NdIII atom is six-coordinated by two N atoms of the 1,10-phenanthroline (phen) ligand and four O atoms of the three phenoxyacetate ligands. In the crystal structure, intermolecular C—H...O hydrogen bonds lead to a supramolecular network. [ABSTRACT FROM AUTHOR]

Two novel metal-organic frameworks, [Cd(Bna)(DMF)(HO)] · nDMF (I) (Bna = 2,2′-dihydroxy-l,l′-dinaphthyl-3,3′-dicarboxylate) and [Cd(Bna)(Bipy)(DMF)] ( II) (Bipy = 4,4′-bipyridine) have been synthesized under mild conditions and structurally characterized. Crystal structural analyses reveal that complex I adots a 1D spiral structure with DMF guest molecules in the spiral by hydrogen bondings. Complex II is constructed by -Cd-Bna-Cd- zigzag chains, which are further connected by Bipy into a 2D sheet. X-ray powder diffraction and thermogravimetric analyses for I and II show that they are highly themally stable in the solid state. [ABSTRACT FROM AUTHOR]

The LaIII atom in the title complex, [La(C8H7O3)3(C12H8N2)], is coordinated by two N atoms of the 1,10-phenanthroline ligand and four O atoms of three phenoxyacetate ligands. This mononuclear complex is further extended into a supramolecular network structure via nonclassical hydrogen bonds between CH groups of 1,10-phenanthroline and phenoxyacetate and O atoms of neighbouring phenoxyacetate ligands. [ABSTRACT FROM AUTHOR]

The SnIV atom in the title complex, [Sn(NO3)4(C10H8N2)2], is ten-coordinated by two N atoms of 4,4′-bipyridine ligands and eight O atoms of four NO3− ligands. The Sn atom lies on a crystallographic twofold rotation axis. The Sn—O bond lengths are in the range 2.378 (5)–2.538 (5) Å. The Sn—N bond length is 2.601 (5) Å. C—H...O hydrogen bonds link mononuclear complex molecules into a supramolecular network structure. [ABSTRACT FROM AUTHOR]

The asymmetric unit of the title compound, (C11H9N)2[Sn(NO3)4], consists of a mononuclear complex anion and two non-coordinated 4-phenylpyridinium cations. The SnIV atom, lying on a twofold rotation axis, is coordinated by eight O atoms of four NO3− anions. This mononuclear complex is further extended into a supramolecular network structure via non-classical hydrogen bonds between CH groups of cations and O atoms of neighbouring anions. [ABSTRACT FROM AUTHOR]

In the mol­ecule of the title compound, [Ni(C12H8N2)2(C4H8N2O2)](NO3)2·2H2O, the Ni atom has a distorted octa­hedral coordination formed by six N atoms from one dimethyl­glyoxime and two 1,10-phenanthroline ligands. In the crystal structure, mol­ecules are linked into a three-dimensional framework by O—H⋯O hydrogen bonds and π–π stacking inter­actions. [ABSTRACT FROM AUTHOR]

In the mol­ecule of the title compound, [Zn(C12H8N2)2(C4H8N2O2)](NO3)2·2H2O, the Zn atom has a distorted octa­hedral coordination formed by six N atoms from one dimethyl­glyoxime and two 1,10-phenanthroline ligands. In the crystal structure, mol­ecules are linked into a three-dimensional framework by O—H⋯O hydrogen bonds and π–π stacking inter­actions. [ABSTRACT FROM AUTHOR]