issue contents

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


link to html
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.

link to html
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).

link to html
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
















link to html
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)


link to html
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)


link to html
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.

link to html
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.

link to html
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.

link to html
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
link to html
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.

link to html
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.

link to html
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.

link to html
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.

link to html
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.

link to html
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
link to html
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.

link to html
New triclinic polymorphs of tri­phenyl­phosphine, C18H15P, (I>), and tri­phenyl­phosphine sulfide, C18H15PS, (II>), were crystallized. For the structure of (I>), it is obvious that the highest peaks in the final difference electron-density map are located at the `lone-pair regions' of P atoms. We have observed this effect in two further phosphorous-containing structures.

link to html
The title compound is a triterpene isolated from the leaves of the plant Jacquinia Ruscifolia, found in Mexico. The absolute structure could not be established unambiguously. The saturated rings are all in chair conformations, while the unsaturated rings are half chairs.

Acta Cryst. (2000). C56, e62
doi: 10.1107/S0108270100000470
link to html
Do­decyl 2-nitro­phenyl disulphide contains an intramolecular S⋯O contact of 2.623 (3) Å. The angle between the planes of the NO2 group and the attached phenyl ring is 4.2 (3)°.

Acta Cryst. (2000). C56, e63
doi: 10.1107/S0108270100000482
link to html
In the five-membered ring in the title compound, the dimensions at the B atom are N—B 1.654 (3), O—B 1.479 (3), and C—B 1.606 (3) and 1.609 (3) Å.

link to html
The crystal structure of the title compound, derived from an ultrathin plate-shaped specimen, is divided into hydro­phobic and hydro­philic layers. Two peptide mol­ecules in the asymmetric unit are related by pseudo-translation, but two of the four 2-propanol mol­ecules have different relative orientations and hydrogen-bond interactions.

link to html
The title compound has a centrosymmetric dication, which is hydrogen bonded to the anions with an N⋯Cl distance of 3.012 (3) Å.

Acta Cryst. (2000). C56, e68
doi: 10.1107/S0108270100001062
link to html
Viox {2,5-di­hydro-4-[4-(methyl­sulfonyl)­phenyl]-3-phenyl-2-furan­one} is a selective COX-II inhibitor with anti-arthritic activity. Although the mol­ecule itself is achiral, it crystallizes in a chiral space group and the absolute structure has been reliably determined.

link to html
4-Nitro­phenol and 4-methyl­pyridine are linked by an O—H⋯O hydrogen bond [O⋯N 2.668 (2) Å]. These dimers pack in a herring-bone pattern in the crystal lattice.

Acta Cryst. (2000). C56, e71
doi: 10.1107/S0108270100001086
link to html
The regio- and stereochemistry of the title compound has been established by X-ray analysis. The molecular dimensions are normal.

Acta Cryst. (2000). C56, e72
doi: 10.1107/S0108270100001098
link to html
The title compound, a phosphorus-substituted isoxazole ring, was prepared by a 1,3-dipolar cyclo­addition. The molecular structure is stabilized by an intramolecular N—H⋯O hydrogen bond.

Special and virtual issues

Acta Crystallographica Section C is planning special issues on

The Structural Chemistry of Homogeneous and Heterogeneous Catalysts

NMR Crystallography.

Full details are available on the special issues page.

The latest virtual issue, featuring Coordination polymers and with an introduction by Len Barbour, was published in July 2014.

What are the 'most read' articles from the recent special issues?

Follow Acta Cryst. C
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds