La₂Pb(SiS₄)₂

The title structure is occupationally disordered on the La and Pb sites. A large gap was found around the coordination polyhedra, which makes the compound a prospective material in crystal engineering.

Ba₅Cl₄(H₂O)₈(VPO₅)₈: a novel three-dimensional framework solid

The structure of Ba₅Cl₄(H₂O)₈(PVO₅)₈ consists of alternating anionic oxovanadium phosphate (VPO₅) and cationic barium chloride hydrate, Ba₅Cl₄(H₂O)₈, layers. These layers are linked through Ba—O bonds, generating a three-dimensional framework.

The new ternary phases of La₃(Zn_0.874Mg_0.126)₁₁ and Ce₃(Zn_0.863Mg_0.137)₁₁

The La₃(Zn_0.874Mg_0.126)₁₁ and Ce₃(Zn_0.863Mg_0.137)₁₁ inter­metallic compounds are isostructural and crystallize in the ortho­rhom­bic La₃Al₁₁ structure type. Compared to the structure of La₃Al₁₁, in La₃(Zn_0.874Mg_0.126)₁₁, a significant decrease of 11.9% in the unit-cell b axis and and an increase in the other two directions, of 3.6% along a and 5.2% along c, are observed. Such an atypical deformation is caused by the closer packing of atoms in the unit cell due to atom shifts that reflect strengthening of metallic-type bonding.

Ba₂Gd₂(Si₄O₁₃): a silicate with finite Si₄O₁₃ chains

Ba₂Gd₂(Si₄O₁₃) contains finite Si₄O₁₃ chains and Gd₂O₁₂ dimers. It is a representative of a rare class of silicates containing Si₄O₁₃ chains.

The solid solution (Fe_0.81Al_0.19)(H₂PO₄)₃ with a strong hydrogen bond

A sample of synthetic (Fe_0.81Al_0.19)(H₂PO₄)₃ was prepared by hydro­thermal methods in order to determine the crystal structure. The compound is a new monoclinic variety (γ-form) and the structure is based on a two-dimensional framework of distorted corner-sharing MO₆ (M = Fe, Al) polyhedra sharing corners with PO₄ tetra­hedra.

Crystal structure and stability of Tl₂CO₃ at high pressures

The crystal structure of dithallium carbonate, Tl₂CO₃ (C2/m, Z = 4), is stable to 5.82 GPa and does not undergo any phase transitions at lower pressures as reported previously. At higher pressures, the material undergoes a phase transition that destroys the single crystal.

Two polymorphs of chlorido(cyclo­hexyl­diphenyl­phosphine)gold(I)

Tetra­kis(μ₂-4-amino­benzoato)di-μ₃-oxido-tetra­kis[di­butyl­tin(IV)]

Mono- and bis-tolyl­terpyridine iridium(III) complexes

A synchrotron radiation study of the one-dimensional complex of sodium with (1S)-N-carboxyl­ato-1-(9-de­aza­adenin-9-yl)-1,4-dide­oxy-1,4-imino-D-ribitol, a member of the 'immucillin' family

Hydrogen-bonded network structures in dipyridinium, bis­(2-methyl­pyridinium), bis­(3-methyl­pyridinium) and bis­(4-methyl­pyridinium) dioxidobis(oxydi­acetato)uranate(VI)

Ammine(2,2′-bi­pyridine-κ²N,N′)silver(I) nitrate: a dimer formed by π–π stacking and ligand-unsupported Ag⋯Ag inter­actions

2-(Di­phenyl­phosphinoylmeth­yl)pyrrole–2-(di­phenyl­phosphinometh­yl)pyrrole (0.43/0.57) and tetra­chlorido­(5-di­phenyl­phosphinomethyl-2H-pyrrole-κ²N,P)titanium(IV)

A copper–polyol complex: [Na₂(C₂H₆O₂)₆][Cu(C₂H₄O₂)₂]

The ansa-zirconocene [bis­(η⁵-cyclo­penta­dien­yl)phenyl­phosphine]­dichloridozirconium(IV)

2-Amino-5-(3,4-di­meth­oxy­benzyl­idene)-1-methyl­imidazol-4(5H)-one N,N-di­methyl­formamide monosolvate

Hydrogen-bonded supra­molecular motifs in pyrimethaminium 4-methyl­benzoate, pyrimethaminium 3-hy­droxy­picolinate and pyri­meth­aminium 2,4-di­chloro­benzoate

Di­hydrogen phosphate mediated supra­molecular frameworks in 2- and 4-chloro­anilinium di­hydrogen phosphate salts

Two solid phases of pyrimidin-1-ium hydrogen chloranilate monohydrate determined at 225 and 120 K

Two penta­dehydro­peptides with different configurations of the ΔPhe residues

Peracetyl­ated α-D-gluco­pyranosyl fluoride and peracetyl­ated α-maltosyl fluoride

p-Phenyl­enedi­amine and its dihydrate: two-dimensional isomorphism and mechanism of the dehydration process, and N—H⋯N and N—H⋯π inter­actions

7-Amino-5-methyl-2-phenyl-6-(phenyl­diazenyl)pyrazolo[1,5-a]pyrimidine crystallizes with Z′ = 2: pseudosymmetry and the formation of complex sheets built from N—H⋯N and C—H⋯π(arene) hydrogen bonds

(E)-N-{[6-Chloro-4-(4-chloro­phen­yl)-3-methyl-1-phenyl-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl­ene}benzene-1,2-di­amine: a three-dimensional framework structure built from only two hydrogen bonds

Hydrogen-bonding patterns in two aroylthio­carbamates and two aroylimido­thio­carbonates

Strong asymmetric hydrogen bonding in 2-(oxamoylamino)ethyl­ammonium oxamate–oxamic acid (1/1)

Strontium tetra­fluoro­borate. Erratum

Erratum to Acta Cryst. (2007), C63, i75–i76.