Europium(II) oxy­iodide

The structure of Eu₄OI₆, isotypic with Eu₄OCl₆ and Eu₄OBr₆, is characterized by O-centered tetrahedra of divalent europium cations and hexagonal channels parallel to [001] filled with iodide anions.

The Rb analogue of grimselite, Rb₆Na₂[(UO₂)(CO₃)₃]₂(H₂O)

The Rb analogue of grimselite is based on isolated uranyl tricarbonate clusters, [(UO₂)(CO₃)₃], linked through corner sharing to RbO₁₀ and NaO₈ polyhedra. The title compound is isostructural with grimselite, with a reduced occupancy of the H₂O site (25% versus 50% in grimselite).

A new crystal phase of barium nitroprusside trihydrate studied by neutron diffraction at 20 K

The crystal structure of barium penta­cyano­nitro­syl­ferrate trihydrate, in space group P1, is completely ordered. The study was performed to characterize the structural phase generated by the phase transition undergone by the crystals at 80 K, at which temperature the unit-cell volume doubles. The positional changes of the water mol­ecules with respect to those of the compound at 105 K are presented.

A novel gallium arsenate organically templated by propane-1,3-diyldi­ammonium with a ULM-3-type open framework: [Ga₃(AsO₄)₃(OH)F](C₃H₁₂N₂)·H₂O

The title oxy­fluorinated gallium arsenate exhibits a three-dimensional framework, with ten-ring channels in which the diprotonated 1,3-di­amino­propane and water mol­ecules are encapsulated. This network is isostructural with that of phosphates with a ULM-3-type framework.

Di­aqua­tetra­kis­(pyridine-2,6-di­carbox­ylato-κ²O²,O⁶)­tetra­kis­(μ-pyridine-3,5-di­carboxylic acid-κ²N:O)tetracopper(II): a copper complex with tetrameric molecular units

A quadrupole–quadrupole stacking synthon in (2,3,5,6-tetra­fluorobenzene­thiol­ato-κS)(tri­phenylphosphine-κP)­gold(I)

[Benzyl­bis­(di­methyl­amino)­methyl­silyl-κ²C,N](N,N,N′,N′-tetra­methyl­ethyl­ene­diamine-κ²N,N)­lithium(I)

Tetra-μ-2-fluoro­benzoato-bis­[aqua(4,4′-bi­pyridine)(2-fluorobenzoato)lanthanum(III)]

Polymeric aqua­(μ₄-di­hydrogen benzene-1,2,4,5-tetra­carboxylato)(1,10-phen­anthroline)cobalt(II)

Polymeric sodium 3,5-di­carb­oxy­benzene­sulfonate–urea–water (1/1/1)

catena-Poly­[[silver(I)-μ-ethane-1,2-di­amine-κ²N:N′] 3-fluorobenzoate monohydrate]

A polynuclear coordination glutarate of lanthanum(III) with an uncommon cage feature

Bis­[tetra­kis­(tri­phenyl­phosphine-κP)silver(I)] di-μ-tri­fluoro­acetato-κ⁴O:O′-bis­[bis­(tri­fluoro­acetato-κO)stannate(IV)]

Two new polymorphs of trans-bis­(hinokitiolato)copper(II)

RbCr^III(C₂O₄)₂·2H₂O, Cs₂Mg(C₂O₄)₂·4H₂O and Rb₂Cu^II(C₂O₄)₂·2H₂O: three new complex oxalate hydrates

RbCr^III(C₂O₄)₂·2H₂O and Cs₂Mg(C₂O₄)₂·4H₂O represent two novel structure types among double-metal oxalate hydrates. Rb₂Cu^II(C₂O₄)₂·2H₂O is isotypic with K₂- and (NH₄)₂Cu^II(C₂O₄)₂·2H₂O. All three compounds have layered structures. The Cr, Mg and Cu atoms are six-, six- and (4 + 2)-coordinated, respectively.

Phenanthroline complexes of zinc and calcium carbamates

Aqua(2,2′-di­amino-4,4′-bi-1,3-thia­zole-κ²N,N′)(imino­diacetato-κ³O,N,O′)­chromium(III) chloride mono­hydrate

cis-Bis­[1,3-bis­(2-fluoro­phenyl)­triazenido-κ²N¹,N³]­bis­(pyridine-κN)cadmium(II)

Hepta­aqua­tetra-μ₃-hy­droxy-hexa-μ₂-L-leucine-(L-leucine)­tetraytterbium(III) tetra­chlorozinc(II) tri­chloro­hydroxyzinc(II) tetrachloride octahydrate

Di­ethyl 1-(4-fluoro­phenyl)-3-(2-furyl)-5-oxopyrrolidine-2,2-di­carboxyl­ate and di­ethyl 1-(3,4-di­chloro­phenyl)-3-(2-furyl)-5-oxopyrrolidine-2,2-di­carboxyl­ate

N-Benzyl-2,5-bis­(2-thienyl)­pyrrole

N,N′-Bis(2-meth­oxy­benzyl­idene) adducts of ethane-1,2-di­amine, propane-1,3-di­amine and butane-1,4-di­amine

A 1,3,2-ox­aza­borolidine dimer derived from (S)-α,α-di­phenyl­prolinol

Di­ethyl (Z,Z)-3,3′-(ethane-1,2-diyldi­imino)dibut-2-enoate

Displaced π–π stacking and hydrogen bonds in 3-bromo-N-(2-hy­droxy-1,1-di­methyl­ethyl)­benz­amide

3,3,6,6-Tetra­methyl-1,2,4,5-tetroxane: a twinned crystal structure

rac-1-Phenyl­ethyl­ammonium carb­oxy­methyl­phospho­nate(1–): hydrogen-bonded anion sheets with pendent cations

Racemic 5-(4-chloro­phenyl)-2-meth­oxy­indeno­[1′,2′:2,3]­pyrido­[5,6-d]­pyrimidine-4,6(3H,5H)-dione–di­methyl­form­amide (1/1) and (5RS,5aSR,10bSR)-10b-hy­droxy-2-meth­oxy-5-(4-meth­oxy­phenyl)-5a,10b-di­hydro­indeno­[1′,2′:2,3]­pyrido­[5,6-d]­pyrimidine-4,6(3H,5H)-dione–di­methyl­form­amide (1/1): chains of rings generated by N—H⋯O and C—H⋯π(arene) hydrogen bonds

4-Amino-5-(2-hy­droxy-4,4-di­methyl-6-oxo­cyclo­hexenyl­methyl)-1-methyl-2-(methyl­sulfanyl)­pyrimidin-6(1H)-one: hydrogen-bonded chains are π-stacked in pairs

5-Amino-3-tert-butyl-1-(4-nitro­phen­yl)-1H-pyrazole forms hydrogen-bonded sheets of alternating R(20) and R(32) rings

(1E)-2-(Di­acetyl­amino)-1-methyl­prop-1-enyl acetate

Tri­ethyl­ammonium tetra­phenyl­borate di­chloro­methane solvate

tert-Butyl (6S)-4-hy­droxy-6-isobutyl-2-oxo-1,2,5,6-tetra­hydropyridine-1-carboxyl­ate and tert-butyl (4R,6S)-4-hy­droxy-6-iso­butyl-2-oxopiperidine-1-carboxyl­ate

(6S)-6-Iso­butyl­piperidine-2,4-dione and (4R,6S)/(4S,6S)-4-hy­droxy-6-iso­butyl­piperidin-2-one

A pair of epimeric 13-hy­droxy-2,3,6,7-tetra­meth­oxy-8b,11,12,12a,13,13a-hexa­hydro-9H-9a-aza­cyclo­penta­[b]tri­phenyl­ene-10-ones

Melaminium maleate monohydrate

N,N′-Bis(2-pyridyl)benzene-1,2-di­amine

(Z)-3-(1-Methyl-1H-indol-3-yl)-2-(thio­phen-3-yl)­acrylo­nitrile

An analysis of C—H⋯O and C—H⋯π interactions in three substituted 4-keto­tetra­hydro­indoles