Search

The hydrated title compound, C8H12O7·H2O, was isolated from the Chinese yam Dioscorea opposita Thunb. An intramolecular OH⋯O hydrogen bond occurs in the organic molecule. In the crystal structure, the molecules are linked by intermolecular OH⋯O hydrogen bonds, thereby forming chains propagating in [010]. [ABSTRACT FROM AUTHOR]

The article discusses the intermolecular structure of Bis(4-nitrobenzoato)bis(trimethylsilylmethyl)tin(IV). The geometry at the six-coordinate Sn atom is distorted octahedral with an approximately planar equatorial belt made up of the four O atoms of two carboxylate groups and the axial positions occupied by two trimethylsilylmethyl groups. The biological activity of diorganotin compounds depends mainly on the alkyl groups and the ligands The structure of the compound is analogous to that of bis(4 -methoxylbenzo ato)phenyl- (trimethylsilylmethyl)tin(IV). The carboxylate groups act as asymmetric chelating groups.

The title molecule, C8H16N2O2, possesses a crystallographically imposed center of symmetry. In the crystal structure, intermolecular N—H...O hydrogen bonds link the molecules into ribbons extended along the a axis. [ABSTRACT FROM AUTHOR]

The asymmetric unit of the title compound, C38H32O3·-0.5CH2Cl2, which was synthesized by the reaction of benzaldehyde with acetophenone and NaOH under phase-transfer catalysis and solvent-free conditions, contains two independent molecules of 2,4-dibenzoyl-1,3,5-triphenylcyclohexan-1-ol and a disordered dichloromethane molecule. In both independent cyclohexanol molecules, the central six-membered ring adopts a chair conformation and most of the bulky side groups are located in equatorial positions. The hydroxyl groups are involved in weak intramolecular hydrogen bonding. [ABSTRACT FROM AUTHOR]

In the title compound, [Zn(C13H9N2O)2]·2C3H7NO, the ZnII ion is located on a twofold axis and chelated by two 2-(2- hydroxyphenyl)benzimidazole ligands with a distorted tetrahedral geometry. [ABSTRACT FROM AUTHOR]

The article discusses the intermolecular structure of (Bis[μ-bis(diphenylphosphino)methane-κ2P:P']-bis[(1,10-phenanthroline-κ2 N,N')copper(I)] bis(tetrafluoroborate) dichloromethane disolvate. In the structure, the two Copper centres are bridged by two bis(diphenylphosphino)methane (dppm) ligands to form a centrosymmetric eight-membered Cu2P4C2 ring. The coordination of polyhedron of each Cu atom is distorted tetrahedral. The four-electron-donor diphosphine ligand, bis(diphenyl- phosphino)methane (dppm), is a very efficient bridging bidentate ligand and can form polynuclear complexes with most metal ions.

In the title compound, [Mn(C11H11N2O2)2]n, the Mn atom is chelated by the tryptophanate anion through the amino N and carboxylate O atoms; it is also linked to the carbonyl O atom of an adjacent monomer unit, forming a polymeric sheet. The Mn atom lies on an inversion centre. [ABSTRACT FROM AUTHOR]