Natural monoclinic AgPb(Bi₂Sb)₃S₆, an Sb-rich gustavite

The crystal structure of the Sb-rich variety of the mineral gustavite, AgPb(Bi₂Sb)₃S₆, a naturally occuring monoclinic lillianite homologue with N = 4, has been solved and refined for the first time by means of single-crystal X-ray diffraction. The crystal structure consists of blocks of diagonal chains of four octa­hedra, viz. M1a (Bi), M2a (Sb/Bi), M2b (Bi/Sb) and M1b (Ag), separated by Pb atoms in a trigonal prismatic coordination.

Sodium magnesium sulfate deca­hydrate, Na₂Mg(SO₄)₂·10H₂O, a new sulfate salt

The crystal structure of sodium magnesium sulfate deca­hydrate was solved and refined for the first time. Alternating layers of [Mg(H₂O)₆]²⁺ and [Na₂(SO₄)₂(H₂O)₄]²⁻ ions, parallel to [100], are held together by hydrogen bonding.

A new polymorph of Cu₃B₂O₆

A new polymorph of nona­copper(II) bis­(orthoborate) bis­(hexa­oxodiborate), Cu₉(BO₃)₂(B₂O₆)₂, or Cu₃B₂O₆ with Z′ = 3, has a pseudo-layered monoclinic structure containing BO₃ triangles and B₂O₆ units consisting of corner-sharing BO₃ triangles and BO₄ tetra­hedra. The compound was obtained during an investigation of the Li–Cu–B–O system. In contrast to the triclinic form of Cu₃B₂O₆, the layers are linked to one another by BO₄ tetra­hedra.

Two isomorphous crotonatolanthanide complexes: tetra-μ-but-2-enoato-bis­[di­aqua­(but-2-enoato)Ln]–2,6-di­amino­purine (1/2) (Ln = Dy and Ho)

A benzene-rich pseudopolymorph of bis­[μ-1,3-bis­(penta­fluoro­phen­yl)­prop­ane-1,3-dionato]-κ³O,O′:O′;κ³O:O,O′-bis­{aqua­[1,3-bis­(penta­fluoro­phen­yl)propane-1,3-dionato-κ²O,O′]nickel(II)} benzene tetra­solvate

catena-Poly[bis­[silver(I)-μ₂-4,4′-bi­pyridine-κ²N:N′] naphthalene-2,6-di­carboxyl­ate tetra­hydrate]: self-assembly of a supra­molecular framework via coordination bonds and supra­molecular inter­actions

Trans influence in a mer-octa­hedral tri­iodidolanthanide: tri­iodidotris(tetra­hydro­furan-κO)ytterbium(III)

Monohalogenated ferrocenes C₅H₅FeC₅H₄X (X = Cl, Br and I) and a second polymorph of C₅H₅FeC₅H₄I

Insight into the structures of [M(C₅H₄I)(CO)₃] and [M₂(C₁₂H₈)(CO)₆] (M = Mn and Re) containing strong I⋯O and π(CO)–π(CO) inter­actions

Copper(II) succinate complexes with 1,2-di-4-pyridylethane and 1,3-di-4-pyridylpropane

catena-Poly[silver(I)-μ₂-4,4′-bipyri­dine-κ²N:N′-μ₃-chlorido]: self-assembly of a two-dimensional bilayer silver(I) coordination polymer from AgCl and a bipodal spacer

Titanium complexes with sulfur-linked bis­(phenolate) ligands

Di-μ-oxido-bis­{bis­[N,N′-bis­(2-pyridyl­methyl)ethane-1,2-di­amine]mangan­ese(III,IV)} tris­(perchlorate) hexa­hydrate: clarification of an order–disorder phase transition

Three isomorphous 2,6-di­bromo­pyridinium tetra­bromidometallates: (C₅H₄Br₂N)₂[MBr₄]·2H₂O (M = Cu, Cd and Hg)

A hydrogen-bonded ribbon in 6-amino-3-methyl-5-nitroso-2-(pyrrol­idin-1-yl)pyrimidin-4(3H)-one monohydrate and hydrogen-bonded sheets in 6-amino-2-di­methyl­amino-3-methyl-5-nitroso­pyrimidin-4(3H)-one monohydrate

Cyclo­hexane­carboxamide

Hexane-1,6-diaminium chloride [hydrogen bis­(chloro­acetate)]

Anomeric effect and hydrogen-bonded supra­molecular motif in 5-(3-fluoro-4-meth­oxy­phenyl)-1-[(3-fluoro-4-meth­oxy­phenyl)amino­methyl]-1,3,5-triazinane-2-thione

3,3,6,6,9,9-Hexa­ethyl-1,2,4,5,7,8-hexa­oxa­cyclo­nonane at 296 K

5-Amino-1-naphthol: two-dimensional sheets built up from R₄⁴(18) rings formed by O—H⋯N, N—H⋯O and π–π inter­actions

1:1 Adducts of 2,2′-[iso­propyl­idene­bis­(p-phenyl­ene­oxy)]di­acetic acid with di­methyl­ammonium and 4,4′-bi­pyridine

New pseudopolymorphs of 5-fluoro­cytosine

rac-5-Di­phenyl­acetyl-2,2,4-tri­methyl-2,3,4,5-tetra­hydro-1,5-benzothia­zepine and rac-5-formyl-2,2,4-tri­methyl-2,3,4,5-tetra­hydro-1,5-benzo­thia­zepine

Herringbone array of hydrogen-bonded ribbons in 2-eth­oxy­benzamide from high-resolution X-ray powder diffraction

Crystal packing in the structures of di­ethanol­amine derivatives