Disorder in the anionic part of catena-poly[[(pyrazine-2-carboxyl-ato)copper(II)]-μ-pyrazine-2-carboxyl-ato].

The title compound, [Cu(C(5)H(3)N(2)O(2))(0.88)(C(6)H(4)NO(2))(1.12)](n), is characterized by disorder of the anion, resulting from a statistical occupation in a 0.

Diaqua-bis-(5-methyl-pyrazine-2-carboxyl-ato-κN,O)cadmium.

In the title compound, [Cd(C(6)H(5)N(2)O(2))(2)(H(2)O)(2)], the Cd(II) ion is coordinated in a severely distorted octa-hedral geometry. The N atoms are cis to each other, while the water O atoms and ligand O atoms are mutually trans. The crystal structure is stabilized by a network of O-H⋯O, O-H⋯N and C-H⋯O hydrogen bonds and π-π stacking inter-actions [centroid-centroid distances = 3.

2-Phenyl-ethyl 1-thio-β-d-galactopyran-oside hemihydrate.

The title compound, C(14)H(20)O(5)S·0.5H(2)O, crystallizes with two organic mol-ecules and a solvent water mol-ecule in the asymmetric unit. In both mol-ecules, the hexa-pyranosyl rings adopt a slightly distorted chair conformation ((5)C(2)) with four substituents in equatorial positions and one substituent in an axial position.

S-(4-Nitrophenyl) 4-nitrobenzenethiosulfonate.

The title compound, C(12)H(8)N(2)O(6)S(2), (I), is a positional isomer of S-(2-nitrophenyl) 2-nitrobenzenethiosulfonate [Glidewell, Low & Wardell (2000). Acta Cryst. B56, 893-905], (II).

17-Acet-oxy-mulinic acid.

THE TITLE COMPOUND, [SYSTEMATIC NAME: 5a-acet-oxy-methyl-3-isopropyl-8-methyl-1,2,3,3a,4,5,5a,6,7,10,10a,10b-dodeca-hydro-7,10-endo-epidi-oxy-cyclo-hepta-[e]indene-3a-carb-oxy-lic acid], C(22)H(32)O(6) (I), is closely related to methyl 5a-acet-oxy-methyl-3-isopropyl-8-methyl-1,2,3,3a,4,5,5a,6,7,10,10a,10b-dodeca-hydro-7,10-endo-epidi-oxy-cyclo-hepta-[e]indene-3a-carboxyl-ate, (II) [Brito et al., (2008 ▶). Acta Cryst.

Trithia-cyanuric acid: a second triclinic polymorph.

The title compound, C(3)H(3)N(3)S(3), is a triclinic modification. The other reported modification crystallizes with just one mol-ecule in the asymmetric unit, [Guo et al. (2006 ▶).

(1R,3aR,5aS,6S,8aR,8bR,9aS)-1-Hydr-oxy-6-isopropyl-1,3a,5a-trimethyl-perhydro-cyclo-penta-[a]cyclo-propa[i]naphthalen-4-one.

The title compound (also know as azorellanone), C(20)H(32)O(2), is built up from three fused carbocycles, one five-membered ring and two six-membered rings. The five membered-ring has an envelope conformation, whereas the six-membered rings have a distorted half-chair and a twist-boat conformation. In the crystal, mol-ecules are linked by O-H⋯O inter-actions into zigzag chains with graph-set notation C(8) along [010].

1-Methyl-4-({5-[(4-methyl-phen-yl)sulfan-yl]pent-yl}sulfan-yl)benzene.

There are two independent mol-ecules in the asymmetric unit of the title compound, C(19)H(24)S(2). In both mol-ecules, the aliphatic segment of the ligand is in an all-trans conformation: the -S-(CH(2))(5)-S-bridging chain is almost planar (r.m.

Dimethyl 2,2'-[butane-1,4-diylbis(sul-fanediyl)]dibenzoate.

The title compound, C(20)H(22)O(4)S(2), was synthesized by the reaction of 1,4-dibromo-butene with methyl thio-salicylate. The aliphatic segment of this ligand is in an all-trans conformation. The bridging chain, -S-(CH(2))(4)-S-, is almost planar (r.