February 2000 issue
In the title compound, decasodium diglycine dihydrogenodotetracontadodecatungstate(10−) octacosahydrate, the two glycine carboxylate O atoms coordinate three different Na+ cations, while the amino N atom forms hydrogen bonds with the paratungstate anion through both terminal and bridging O atoms.
electronic papers (inorganic compounds)
The 0D structure of Zr(OH)2CrO4 has been reinvestigated [Mark (1972). Acta Chem. Scand. 26, 3744–3756]. It consists of infinite nets with the composition [Zr3(OH)6CrO4]n4n+, joined together by chromate groups; the zirconium polyhedra are not influencead by the 0D phenomenon.
electronic papers (metal-organic compounds)
In the title compound, the Ir atom is octahedrally coordinated by two trans Cl− and two dimethylglyoximate chelate ligands in the equatorial plane. A two-dimensional hydrogen-bond network between NH4+ and [IrCl2(C4H7N2O2)2]− is extended along the bc plane.
In the title compound, the Pd atom is coordinated by two 1,3-dimethylbarbiturate anions, one through a deprotonated tetrahedral C atom and the other through the enolate O atom.
In the title dimethylpalladium(II) complex, [Pd(CH3)2(C27H26P2)]·0.5C7H8, the P—Pd—P angle [93.18 (3)°] is significantly larger than that in the corresponding dichloro complex [89.32 (3)°]. The toluene molecule is disordered around an inversion centre.
The title compound contains a centrosymmetric dimeric cation and it is formed upon slow evaporation of a solution containing bis(acetonitrile)bis[1,2-bis(diphenylphosphino)ethane]palladium(II) bis(tetrafluoroborate) in deuterated chloroform. The anion and the solvent molecule are slightly disordered.
In (C5H5FeC5H5)2(C5H4OS4), the values of the geometric parameters of the ferrocene and 1,3-dithiol-2-one (dmio) moieties are within normal ranges.
All three independent molecules in the triclinic modification of (O-isopropyl dithiocarbonato-S)triphenyltin show tetrahedral coordination at their Sn atoms. Bond dimensions involving the Sn atoms are similar to those found in the monoclinic modification of the same compound. Two of the independent molecules are related by a pseudo-translation allowing a stacking fault that reduces the intensities of h + k odd reflections.
In the title compound, four N atoms from the deprotonated ligand derived from bis(3-aminopropyl)amine and 2-imidazolecarboxaldehyde are coordinated to the Cu atom. The methanol O atom occupies one axial position with a Cu—O bond distance of 2.295 (2) Å.
In the title compound, the coordination geometry of the CoIII atom is only slightly distorted from regular octahedral, and the racemic nature of the material was confirmed by X-ray structure analysis.
The tin coordination in dibromodimethyl(N-methylpyrrolidin-2-one-O)tin(IV) is a distorted trigonal bipyramid with the methyl groups and one bromine in equatorial, and the N-methylpyrrolidinone (NMP) ligand and the other bromine in apical positions. The Sn—Br bond lengths are 2.6737 (4) and 2.5256 (4) Å.
The six Mo atoms of the title compound form a standard octahedral cage through bridging O atoms. The [Mo6O19]2− anions as a whole have exact Oh symmetry with three crystallographic fourfold axes aligned along Mo—O—Mo.
electronic papers (organic compounds)
The crystal structure contains two independent molecules with slightly different conformations; these are linked to form a two-dimensional network by pairs of O—H⋯O and N—H⋯O hydrogen bonds.