(NH₄)₂ZrGe₃O₉: a new microporous zirconogermanate

Crystals of (NH₄)₂ZrGe₃O₉, a new zirconogermanate analogue of wadeite, were hydro­thermally synthesized using ZrO(NO₃)₂·2H₂O as the source of Zr. The framework structure is built up of cyclic trigermanate units crosslinked by ZrO₆ octahedra. Two ammonium cations are located in each of the large cages.

Dirubidium dicadmium sulfate at 293 K

Rb₂Cd₂(SO₄)₃ is a type I langbeinite. As in any langbeinite-type structure, the Rb⁺ ions are surrounded by nine O atoms, forming irregular polyhedra. Each Cd²⁺ ion is coordinated by six O atoms in the form of a distorted octahedron, where each O atom belongs to a different sulfate ion.

Two Ti-doped distrontium ruthenium tetraoxides: Sr₂Ru_0.93Ti_0.07O₄ and Sr₂Ru_0.81Ti_0.19O₄

Crystals of titanium-doped distrontium ruthenium tetraoxide, Sr₂Ru_1−xTi_xO₄, with x = 0.07 and 0.19, were grown by floating-zone melting. Increasing Ti content leads to a distinctive systematic variation of cell parameters and interatomic distances with respect to the undoped material.

LiInSiO₄: a new monovalent–trivalent olivine

The structure of the olivine LiInSiO₄ (lithium indium silicate) is isotypic with LiScSiO₄ and MgMgSiO₄ (forsterite). The main differences between the title compound and the divalent–divalent olivines are found for bond lengths and angles opposite common edges between the tetrahedron and the Li⁺ and In³⁺ ion sites.

Disordered syn–anti hydrogen-bonded chains in 3-(ferrocenyl­carbonyl)­propionic acid

Tetra-n-butyl­ammonium tetra­kis­(penta­fluoro­benzene­thiol­ato-κS)­aurate(III)

Polymeric μ-bromo-μ-pyridine-3-carboxyl­ato-κ³O,O′:N-mercury(II)

The monoclinic polymorph of rac-5,7,7,12,12,14-hexa­methyl-1,4,8,11-tetraazonia­cyclo­tetra­decane bis­(hexa­fluoro­germanate) tetrahydrate

Two new dimeric cadmium(II) and zinc(II) sulfate complexes with 2,4,6-tris­(2-pyridyl)-1,3,5-triazine and 2,2:6′,2′′-ter­pyridine

Polymeric hexa­aqua­hexa­kis­(μ₃-2,2′-oxy­diacetato)­trizinc(II)­digadolinium(III) dodecahydrate

[N-(Carboxyl­ato­methyl)­aspartato(3–)](ethyl­enedi­amine)­cobalt(III) trihydrate

trans-Di­aqua­bis­(thio­semicarb­azido-κ²N,S)­nickel(II) dimaleate dihydrate

Polymeric tris­(μ₂-acetone-κ²O:O)sodium polyiodide at 120 K

Tripotassium tris­(oxalato-κ²O,O′)­aluminate bis­(hydrogen peroxide) hydrate, the first example of a cyclic hydrogen-bonded H₂O₂ dimer

Dipotassium di-μ-iso­thio­cyanato-κ⁴N:S-bis­[(N-salicyl­idene-DL-valinato-κ³O,N,O′)­cuprate(II)]

trans-Bis­(di­methyl­glyoximato-κ²N,N′)­(1-hexenyl)(pyridine-κN)­cobalt(III): a cobaloxime-substituted terminal alkene that rapidly isomerizes to a cobaloxime-substituted internal alkenyl complex

A one-dimensional coordination polymer with metal–metal inter­actions: catena-poly­[[tri­aqua­barium(II)]-μ-aqua-κ²O:O-di-μ-thio­salicyl­ato-κ⁴O:O]

Bis(O-ethyl di­thio­carbonato-κ²S,S′)­palladium(II)

(4S,5S)-4-[(1R)-1,2-Di­hydroxy­ethyl]-5-tri­decyl-1,3-oxazolidin-2-one

Head-to-head dimers in the zwitterion of 1-hy­droxy-3-(pyrrolidin-1-yl)pro­pyl­idene-1,1-bis­phospho­nic acid (EB 1053)

()-5-(4-Meth­oxy­phenyl­amino­carbonyl)-1-aza­bicyclo­[3.3.0]octan-2-one benzene solvate

4-[(3-Chloro­phenyl)­diazenyl]-2-{[tris­(hy­droxy­methyl)­methyl]amino­methyl­ene}cyclo­hexa-3,5-dien-1(2H)-one

6-Amino-2-(3,4-di­meth­oxy­benzyl­amino)-3-methyl-5-nitro­sopyrimidin-4(3H)-one: hydrogen-bonded sheets form interdigitated bilayers

(R)-1-Phenyl­ethyl­ammonium 6-amino-5-nitro­pyrimidine-2,4(1H,3H)-dionate (R)-1-phenyl­ethyl­amine hemisolvate: hydrogen-bonded sheets of ions with pendent solvent mol­ecules

Hydrogen bonding in 1-carbamoyl­guanidinium methyl­phospho­nate monohydrate

The host–guest complex between cone-25,26:27,28-bis­(methyl­ene­dioxy)­calix­[4]­arene and di­chloro­methane

1,3-Thia­zolidine derivatives from regioselective [2+3]-cyclo­additions of azomethine yl­ides with thio­ketones

The sesquiterpenoid nootkatone and the absolute configuration of a di­bromo derivative

A `tetrameric' 3,4-di-p-tolyl-1,2,5-oxadiborole derivative

Two hydrates of 2,6-bis­(1H-benzimidazol-2-yl)­pyridine

Five (1H-pyrrol-2-yl)­pyridines

meso-Bis­(phenyl­sulfinyl)­methane

[Et₄N][7-Me₂S-nido-B₁₁H₁₂]

9α-Fluoro-16α-methyl-3,11-dioxoandrosta-1,4-diene-17β-carboxylic acid: catemeric hydrogen bonding and acetic acid solvation in a steroidal keto acid related to dexamethasone

Two polymorphs of bis­(2-bromophenyl) di­sulfide

Di­propyl 3,6-di­phenyl-1,2-di­hydro-1,2,4,5-tetrazine-1,2-di­carboxyl­ate