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Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296

February 2000 issue

Highlighted illustration

Cover illustration: The structure of the [Y(H2O)6{(CH3)2SO}2]3+ cation with displacement ellipsoids drawn at the 30% probability level. See Kristiansson and Lindqvist-Reis [Acta Cryst. C56, 163-164].

inorganic compounds


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Hg(PO3)2 is isotypic with the low-temperature form α-Cd(PO3)2. It contains infinite polyphosphate chains and 1[HgO2O4/2] units, both running parallel to the c axis.

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The title compound crystallizes with the Na4CoO4 structure type, showing discrete SnO44− anions as main building blocks. The structure is thus isotypic with a series of corresponding compounds A4MO4 (A = alkali metal and M = group IV element).

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The high-temperature structure of lanthanum diarsenide comprises La3+ cations coordinated in a tricapped trigonal prismatic geometry by As atoms from two kinds of polyarsenide chain anions, namely As35− and As57−.

metal-organic compounds
















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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.




organic compounds































electronic papers (inorganic compounds)


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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)


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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.

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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.

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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.

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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.

Acta Cryst. (2000). C56, e46
doi: 10.1107/S0108270100000408
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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.

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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.

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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.

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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.

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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.

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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)


Acta Cryst. (2000). C56, e57
doi: 10.1107/S0108270100000378
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