Two new phosphate langbeinites, Rb₂YbTi(PO₄)₃ and Rb₂Yb_0.32Ti_1.68(PO₄)₃, investigated at 293 and 150 K

The structures of Rb₂YbTi(PO₄)₃ and Rb₂Yb_0.32Ti_1.68(PO₄)₃ have been determined at both 293 and 150 K. Both compounds belong to the langbeinite structure type, with mixed Yb/Ti populations in the two crystallographically independent octahedral sites (of symmetry 3). Ytterbium favours one of these sites, where about two-thirds of the Yb atoms are found. The O-atom displacement parameters are large in both compounds at both temperatures.

The bivalent metal hypophosphites Sr(H₂PO₂)₂, Pb(H₂PO₂)₂ and Ba(H₂PO₂)₂

The Sr(H₂PO₂)₂, Pb(H₂PO₂)₂ and Ba(H₂PO₂)₂ structures consist of layers of cations bridged by hypophosphite anions. The cations exhibit square antiprismatic coordination by O atoms.

Two alkali metal chlorites, LiClO₂ and KClO₂

The lithium chlorite, LiClO₂, and potassium chlorite, KClO₂, structures consist of layers of alkali cations bridged by chlorite anions. The Li⁺ cations are tetrahedrally coordinated by oxygen. The coordination environment of the K⁺ cations involve eight O atoms, which form a distorted cube.

A comparison of the clinopyroxene compounds CaZnSi₂O₆ and CaZnGe₂O₆

The synthetic compounds CaZnSi₂O₆ and CaZnGe₂O₆ belong to the clinopyroxene structure type. A detailed comparison is made between analogous silicate and germanate calcium pyroxenes.

High-pressure synthesis of the new rare-earth oxoborate β-Gd₂B₄O₉

The title compound was obtained by the reaction of Gd₂O₃ and B₂O₃ under high-pressure/high-temperature conditions of 3 GPa and 1223 K using a Walker-type multi-anvil assembly. The crystal structure has been determined by single-crystal X-ray diffraction.

Poly­[[di­aqua­cobalt(II)]-μ-4,4′-bi­pyridine-κ²N:N′-μ-p-phenyl­enebis­(­oxy­acetato)-κ²O:O′]

Tri-μ₂-chloro-tetra­chloro-μ₃-oxo-hexa­kis­(tetra­hydro­furan-κO)­dititanium(III)­samarium(III): a novel trinuclear Sm–Ti mixed species

(Di-2-pyridyl­amine-κ²N,N′)(naphtha­lene-2,3-diolato-κ²O,O′)­palladium(II) monohydrate and (di-2-pyridyl­amine-κ²N,N′)(3-oxido­naphthalene-2-car­boxyl­ato-κ²O,O′)­palladium(II)

A paramagnetic precursor for polymeric supramolecular assemblies based on multiply bonded dimetal units: μ-acetato-aceto­nitrile­tris­(μ-N,N′-di­phenyl­formamidinato)­diruthenium tetra­fluoro­borate di­chloro­methane hemisolvate

trans-Di-μ-bromo-bis­[bromo­(tri­ethyl­phosphine-κP)­platinum(II)]

Tris­[(R)-lact­amide-κ²O,O′]­zinc(II) tetra­bromo­zincate

Di-μ-acetato-bis­[bis­(4-amino­benzoato)(2,2′-bi­pyridyl)­manganese(II)]

Dimeric hexa­kis­(4-methyl­benzoato)­bis­(1,10-phenanthroline)didyspros­ium(III)

Bis[2,2′-(phenyl­phosphinediyl)­dibenzene­thiol­ato-κ³S,P,S′]germanium(IV)

A new layered zinc phosphate templated by protonated isonicotinate, [Zn₂(C₆H₅NO₂)₂(HPO₄)₂]

Aurophilic interactions in μ-p-phenyl­enediethynyl-bis­[(tri­methyl phosphite)gold(I)] di­chloro­methane hemisolvate

[N-(2-Hy­droxy­ethyl)ethyl­enedi­amine-κ³N,N′,O]-cis-bis­(iso­thio­cyanato-κN)copper(II)

fac-Bromo­tri­carbonyl­[2-(2-pyridylmethyl)-2,3-di­hydro-1H-isoindol-1-one]­rhenium(I) methanol solvate

A three-dimensional supramolecular network built with the zigzag chain complex bis­(5-carb­oxy-1H-imidazole-4-carboxyl­ato)copper(II)

A dinuclear complex of cobalt(II) with 2,2′-(1,4-butane­diyl)­dibenz­imidazole

Chloro­bis­(di­methyl­amido)(η⁵-2,5-di­methyl­pyrrolyl)­titanium(IV), [Ti(NMe₂)₂(DMP)Cl]

Di­phenyl­mercury, redetermined at 120 K: sheets built from a single C—H⋯π(arene) hydrogen bond

Tetra-μ-acetato-κ⁸O:O′-bis­[(N¹,N²-di-p-anisylformamidine-κN²)ruthenium(II)](Ru—Ru): an example of an axial bis-adduct of {Ru₂}⁴⁺ tetra­carboxyl­ate with N-donor ligands

μ-1,2-Bis(4-pyridyl)ethene-κ²N:N′-bis­(tetra­aqua­{4-[2-(4-pyridinio)­ethenyl]pyridine-κN}cobalt(II)) hexa­aqua­cobalt(II) tetra­kis­(sulfate) octahydrate

Di-μ-hydroxo-bis­{(aceto­nitrile)di­benzyl(6-methyl-2-pyridylmethyl)amine-κ²N,N]copper(II)} bis­(perchlorate)

Tetra-n-butyl­ammonium bromide–water (1/38)

3-Bromo-1-(2-de­oxy-β-D-erythro-pento­furan­osyl)-1H-pyrazolo­[3,4-d]­pyrimidine-4,6-di­amine: a nucleoside which strongly enhances DNA duplex stability

The isomeric compounds nimbolide and isonimbolide

Bis[4-(3-pyridylmethyl­ene­amino)­phenyl]methane

Tris­[4-(4-nitro­phenyl)-3-aza-3-butenyl]­amine: π-stacked chains of hydrogen-bonded R(26) dimers

(Z)-3-(1H-Indol-3-yl)-2-(3-thienyl)­acrylo­nitrile and (Z)-3-[1-(4-tert-butyl­benzyl)-1H-indol-3-yl]-2-(3-thienyl)­acrylo­nitrile

Fenofibric acid

9-(2-Chloro­ethyl­amino)­acridine monohydrate and its precursor 9-phen­oxy­acridine

Cyclic water pentamers in triclinic crystals of brucinium L-glycerate

A Schiff base lateral macrobicycle derived from 4,13-di­aza-18-crown-6 in its protonated form

Hydrogen-bonding patterns in 2-amino-4,6-di­methyl­pyrimidinium hydrogen sulfate

4-Amino-N-iso­propyl­benzamidinium chloride ethanol solvate

Three 1,2,4-triazole derivatives containing subtituted benzyl and benzyl­amino groups

Hydrogen bonding in 1:1 proton-transfer compounds of 5-sulfosalicylic acid with 4-X-substituted anilines (X = F, Cl or Br)

1,4-Di­phenyl-1,4-di-4-pyridyl-2,3-di­aza-1,3-butadiene: weak C—H⋯N and C—H⋯π hydrogen bonds

N-(Di­phenyl­selenio)di­phenyl­sulfimidium tetra­phenyl­borate

Two isomeric 2-[4-chloro-2-fluoro-5-(prop-2-ynyl­oxy)phenyl]hexa­hydro­iso­indole-1,3-dione compounds

Piperazine-2,5-dione–oxalic acid–water (1/1/2) and a redetermination of piperazine-2,5-dione, both at 120 K: hydrogen-bonded sheets containing multiple ring types

Three tri­fluoro­methyl-substituted protoporphyrinogen IX oxidase inhibitors