Orientational disorder of [Mg(H₂O)₆] octa­hedra in the novel magnesium selenite hydrate Mg(SeO₃)·7.5H₂O

The crystal structure of magnesium selenite 7.5-hydrate is characterized by two crystallographically distinct [Mg(H₂O)₆]²⁺ octa­hedra, one of which is disordered over two different orientations. The selenite groups and water mol­ecules (with partially disordered H atoms) bridge the octa­hedra via hydrogen bonds.

Monoclinic Cu₃(SeO₃)₂Cl₂: an oxo­halide with an unusual CuO₄Cl trigonal–bipyramidal coordination

The structure of monoclinic Cu₃(SeO₃)₂Cl₂ is based on layers of CuO₄Cl trigonal bipyramids, CuO₄ square planes and SeO₃E tetra­hedra. The Cu polyhedra are connected by edge- and corner-sharing to form [010] chains and these chains are bridged by the Se atoms to form (001) layers. The compound is isostructural with Cu₃(TeO₃)₂Br₂.

Mg₂Ru₂Cl₁₀O·16H₂O

The structure of Mg₂Ru₂Cl₁₀O·16H₂O consists of layers of [Ru₂Cl₁₀O]⁴⁻ anions, [Mg(H₂O)₆]²⁺ cations and water mol­ecules stacked along the a axis. Only the O atom bonded to Ru occupies the 2a site with symmetry. All the other atoms occupy general 4e sites. The crystal structure is stabilized by O—H⋯O and O—H⋯Cl inter­actions.

Ca_1.5Eu₃Sn_0.5O₇: a calcium europium tin oxide with a novel structure

A new quaternary compound in the Ca–Eu–Sn–O system, namely calcium europium tin hepta­oxide, Ca_1.5Eu₃Sn_0.5O₇, was prepared by solid-state reaction at 2073 K. All atoms in the structure are on 4i special positions (on mirrors) in space group C2/m. Ca/Eu sites are situated within two O octa­hedra and within two sevenfold coordination sites surrounded by O-capped trigonal prisms. A Ca/Eu/Sn site is coordinated by five O atoms. The compound has a new structure related to the structure of B-form Eu₂O₃.

Bis[bis­(meth­oxy­carbimido)amine-κ²N,N′]bis­(perchlorato-κO)copper(II) bis­[bis­(meth­oxy­carbimido)amine-κ²N,N′]bis­(methanol-κO)copper(II) bis­(perchlorate) methanol disolvate

Poly[di­aqua­(μ-4,4′-bi­pyridine)tetra­kis­(μ-ferro­cene­carboxyl­ato)bis­(ferro­cene­carboxyl­ato)­tri­man­ganese(II)]

Two square-planar palladium(II) complexes with P,O-bidentate hybrid ligands

Bis(μ-3-nitro­benzene-1,2-di­carboxyl­ato)-κ⁸O¹,O²:O²,O³;O³,O²:O²,O¹-bis­[tri­aqua­(2-carb­oxy-3-nitro­benzoato-κ²O,O′)lanthanum(III)] dihydrate

Bis(acesulfamato-κO⁴)di­aqua­bis­­(3-methyl­pyridine-κN)nickel(II)

An organometallic compound with Z′ = 4: {2-[2-(benzyl­idene­amino)phenyl]-1,2-bis­(meth­oxy­carbonyl)ethenyl-κ²C¹,N}iodo­(tri­phenyl­phosphine-κP)palladium(II)

A novel mixed-valence copper complex, poly[[μ₂-4,4′-bi­pyridine-μ₃-pyridine-2,4,6-tri­carboxyl­ato-di­copper(I,II)] monohydrate]

catena-Poly[[bis­(μ₂-4-methyl­benzo­ato-κ²O:O′)disilver(I)(Ag—Ag)]-μ₂-di-2-pyridylamine-κ²N²:N^2′] and catena-poly[[(di-2-pyridylamine-κN²)(μ₂-4-nitro­benzoato-κ²O:O′)disilver(I)(Ag—Ag)]-μ₃-4-nitro­benzoato-κ³O:O′:O′]

1,4,8,11-Tetra­aza­cyclo­tetra­decane anti­mony(III) sulfide

Poly[1,4,8,11-tetra­azacyclo­tetra­decane(2+) [hepta-μ-sulfido-tris­ulfidohexa­anti­mony(III)]], {(C₁₀H₂₆N₄)[Sb₆S₁₀]}_n, was synthesized solvothermally using the macrocyclic tetra­mine 1,4,8,11-tetra­azacyclo­tetra­decane (cyclam) as the structure-directing agent. The structure consists of novel [Sb₆S₁₀]²⁻ layers containing Sb₂S₂, Sb₄S₄ and Sb₇S₇ hetero-rings, which are separated by macrocyclic amine mol­ecules. The macrocylic amine mol­ecules are disordered over two crystallographically distinct positions and are diprotonated in order to balance the charge of the anionic layers.

A new trinuclear cobalt(II) complex: deca­aqua-1κ³O,2κ⁴O,3κ³O-bis­(benzene-1,3,5-tri­carboxyl­ato)-1κO,3κO-di-μ-4,4′-bi­pyridine-1:2κ²N:N′;2:3κ²N:N′-di-4,4′-bi­pyridine-1κN,3κN-tricobalt(II) 4,4′-bi­pyridine solvate octa­hydrate

Bis(tert-butyl­sulfonyl)ethyne and 1-tert-butyl­sulfinyl-2-tert-butyl­sulfonyl­ethyne

A new pseudopolymorph of hexa­kis(4-cyano­phenyl)benzene

The concomitant crystallization of two polymorphs of 1-de­oxy-α-D-tagatose

Conformation and structure of bis­(glycyl-L-aspartic acid) oxalate 0.4-hydrate

o-Chloro- and o-bromo­benzonitrile: pseudosymmetry and pseudo-isostructural packing

Hydrogen bonding in two solid phases of phenazine–chloranilic acid (1/1) determined at 170 and 93 K

Three substituted 4-pyrazolylbenzoates: hydrogen-bonded supra­mol­ecular structures in one, two and three dimensions

7-Amino-2-tert-butyl-5-methyl­pyrazolo[1,5-a]pyrimidine: a three-dimensional framework structure built from two N—H⋯N hydrogen bonds

Hydrogen-bonded chains in 3-tert-butyl-5-[(4-meth­oxy­benz­yl)amino]-1-phenyl-1H-pyrazole and tetra­molecular hydrogen-bonded aggregates in 5-[(benzotriazol-1-ylmeth­yl)(4-meth­oxy­benz­yl)amino]-3-tert-butyl-1-phenyl-1H-pyrazole

Three ethyl 5-amino-1-aryl-1H-imidazole-4-carboxylates: hydrogen-bonded supra­molecular structures in one, two and three dimensions

Hydrogen-bonded chains of rings in methyl 4-[(5-methyl-1H-pyrazol-3-yl)amino]-3-nitro­benzoate and hydrogen-bonded sheets in methyl 1-(5-methyl-1H-pyrazol-3-yl)-1H-benzimidazole-5-carboxyl­ate

3-Nitro­benzaldehyde isonicotinoyl­hydrazone monohydrate redetermined at 120 K: sheets built from O—H⋯O, O—H⋯N, N—H⋯O and C—H⋯O hydrogen bonds

Cyclic tri­hydroxamic acid derivatives

Diiso­propyl­ammonium 2-[(2,4-dinitro­phenyl)­sulfanyl­amino­carbonyl]­benzoate

Hydrogen bonding and π–π stacking in 6-hy­droxy­biochanin A monohydrate

2′-De­oxy-5-propynyl­cytidine: a nucleoside forming two solid-state conformations

Pearls on a string: a Z′ = 7 structure for glycyl-L-valine

Hydrogen phosphate and di­hydrogen phosphate salts of 4-amino­azo­benzene

Cyano-stabilized tri­phenyl­phospho­nium ylids

2,3-Di­meth­oxy­benzaldehyde isonicotinoyl­hydrazone chloro­form monosolvate, and the mono- and dihydrates of 3,4,5-tri­meth­oxy­benzaldehyde isonicotinoyl­hydrazone: hydrogen-bonded supra­molecular structures in one, two and three dimensions

Secondary inter­actions in two related terphenyl derivatives: 2′,5′-di­methyl-p-terphenyl and 2′,5′-bis­(bromo­meth­yl)-p-terphen­yl