Strontium tetra­fluoridoborate and barium tetra­fluoridoborate

In Sr(BF₄)₂, which is isomorphous with the previously published Ca(BF₄)₂, the metal atom is eight-coordinated with a square-anti­prismatic environment. Each tetra­fluorido­borate anion is bonded to four metal centers. In the barium derivative, the metal center, with symmetry 2/m, is surrounded by 14 F atoms. The B atom and two of the three independent F atoms occupy special positions with symmetry m. Each anion is connected to five Ba atoms.

Calcium chloride rhenate(VII) dihydrate

In the nearly tetra­hedral rhenate(VII) anion of calcium chloride rhenate(VII) dihydrate, all constituent atoms lie on special positions of m2m (Re) and m (O) site symmetries. The Cl⁻ anion and water O atom lie on special positions of m2m and 2 site symmetry, respectively. The Ca²⁺ ion, also on a special position (m2m), is eight-coordinated in a distorted square-anti­prismatic coordination mode. The crystal has a layered structure stabilized by Ca—O coordination bonds as well as O—H⋯Cl hydrogen bonds.

Rhombohedral boron subnitride, B₁₃N₂, by X-ray powder diffraction

A new compound, B₁₃N₂, has been synthesized under high pressure. It crystallizes in the Rm space group and features distorted B₁₂ icosa­hedra linked by N—B—N chains, giving rise to a three-dimensional framework.

Structure and thermal decomposition of poly[[tri­aqua­(μ₄-oxydi­acetato)lanthanum(III)] nitrate]

A one-dimensional Cd^II coordination polymer: catena-poly[cadmium(II)-bis­(μ-6-methyl­picolinato)]

Tetra­kis(μ-benzoato-κ²O:O)bis­­{[4-(di­methyl­amino)pyridine-κN¹]copper(II)}

Poly[(μ₃-1,1-dioxo-1,2-benzo­iso­thiazole-3-thiol­ato-κ³N:S³:S³)silver(I)]

Poly[μ₂-4,4′-bi­pyridine-di-μ₂-bromido-cadmium(II)], with novel colour-tunable fluorescence

Tris(di­methyl­amido)bis­(di­methyl­amine)­titanium(IV) chlorido­bis­(di­methyl­amine)[tris­(penta­fluoro­phen­yl)boron–amido][tris­(penta­fluoro­phen­yl)boron–nitrido]­titanate(IV) toluene solvate

Poly[μ₂-4-amino­benzoato-aqua-μ₂-nitrato-zinc]

(Aceto­nitrile){2,6-bis­[1-(2,4,6-tri­methyl­phenyl­imino)­ethyl]­pyridine}­dichlorido­ruthenium(II) di­chloro­methane solvate

trans-Bis(3-amino­flavone-κ²N,O)bis­(perchlorato-κO)copper(II), a new potential anti­tumour agent

Poly[[hexa­aqua­bis­[μ₄-2-hy­droxy-5-(4-sulfonato­phenyl­diazen­yl)­benzoato]­dibarium(II)] 4,4′-bi­pyridine solvate]

catena-Poly[[[pyridine­copper(II)]bis­[μ₃-4-(2-oxido­benzyl­idene­amino)­benzoato]] di­methyl­formamide disolvate], a polymer composed of dimeric dicopper building units

Hexa­kis­[3-(amino­carbonyl)pyri­dinium] deca­vanadate(V) dihydrate

Hexa­aqua­zinc(II) dipicrate trihydrate

Tetra­aqua-1κO,2κ³O-(μ-2,4-di­nitro­phenolato-1κ²O¹,O²:2κO¹)(2,4-dinitro­phenolato-1κ²O¹,O²)dilithium(I): a dinuclear lithium(I) complex

Dipotassium maleate with boric acid

A new sulfate acid polymorph of 1,3-di­hydro­benzotriazole

O-Phenyl (tri­phenyl­phospho­niometh­yl)­phospho­nate phenol solvate: supra­molecular structure generated by O—H⋯O, C—H⋯O and C—H⋯π(arene) hydrogen bonds

Hydrogen-bonded sheets of R₂²(10) and R₄⁴(24) rings in 1-de­oxy-1-morpholino-D-fructo­pyran­ose

Two isomeric reaction products: hydrogen-bonded sheets in methyl 4-(5-amino-3-phenyl-1H-pyrazol-1-yl)-3-nitro­benzoate and hydrogen-bonded chains of edge-fused rings in methyl 3-nitro-4-[(5-phenyl-1H-pyrazol-3-yl)amino]benzoate

4-Carb­oxy­anilinium (2R,3R)-tartrate and a redetermination of the α-polymorph of 4-amino­benzoic acid

Three polymorphs of 4-4′-di­iodobenzalazine, and 4-chloro-4′-iodo­benz­alazine

Two N,N′-di­aryl-2,2,2-tri­chloro­ethane-1,1-di­amines: hydrogen-bonded supra­molecular structures in one and two dimensions

Iodidomesityltellurium(II) iodido­trimesitylditellurium(II)(Te—Te)

Hydrogen-bonded frameworks of bis­(2-carb­oxy­pyridinium) hexa­fluoro­silicate and bis­(2-carb­oxy­quinolinium) hexa­fluoro­silicate dihydrate

Monoclinic and ortho­rhom­bic polymorphs of 4,4′,6,6′-tetra­chloro-2,2′-(piperazine-1,4-diyldi­methylene)diphenol

1′-Methylcyclo­octane-1-spiro-3′-pyrrolidine-2′-spiro-3′′-indoline-2,2′′-dione and 1,1′-di­methylpiper­idine-3-spiro-3′-pyrrolidine-2′-spiro-3′′-indoline-2′′,4-dione

Hydrogen-bonding patterns in rac-1-acetyl-5-methyl-2-thioxoimidazolidin-4-one

Amitriptylinium picrate: conformational disorder

2′-De­oxy­immunosine: a thia­zolo[4,5-d]pyrimidine nucleoside adopting the syn conformation

(E)-Methyl 2-anilino­methyl­ene-3-oxo­butanoate: X-ray and density functional theory studies

Different inter­action motifs of dipolar S=O⋯C=O contacts that associate diastereomers of 2,4(6)-di-O-benzoyl-6(4)-O-{[(1S)-7,7-di­methyl-2-oxo­bicyclo­[2.2.1]heptan-1-ylmethyl]­sulfon­yl}-myo-inositol 1,3,5-orthoacetate

N,N′-Bis(2-hy­droxy­benzyl­idene)pentane-1,5-di­amine

2,2,2-Tri­nitro­ethanol