Crystal structure of Al_2.95Cr_0.59, a phase closely related to the η-phase in the binary Al–Cr system

Al_2.95Cr_0.59 was synthesized by high-pressure sinter­ing (HPS). It has a slightly lower Al content than the closely related η-Al₁₁Cr₂ phase.

Rerefinement of poly[di­aqua­bis­(μ₃-2-methyl­pro­pano­ato-κ⁴O:O,O′:O′)bis­(μ₃-2-methyl­propano­ato-κ³O:O:O)(μ₂-2-methyl­propano­ato-κ³O:O,O′)(2-methyl­propano­ato-κ²O,O′)trilead(II)]

The crystal structure of [Pb₃(C₄H₇O₂)₆(H₂O)₂]_n was redetermined, revealing details of the disorder of one of the hydro­carbon chains in one of the six independent 2-methyl­propano­ate anions.

(4′-Chloro-2,2′:6′,2′′-terpyridine-κ³N,N′,N′′)bis­(nitrato-κO)zinc(II)

The coordination of the Zn^II central atom in the title complex, [Zn(C₁₅H₁₀ClN₃)(NO₃)₂], exists in a distorted trigonal bipyramidal geometry defined by the nitro­gen atoms of the 4-chloro­terpyridine ligand and two monodentate nitrate groups.

catena-Poly[[chlorido­tris­(1,3-thia­zolidine-2-thione-κS)cadmium(II)]-μ-chlorido]

In the structure of the title compound, [CdCl₂(C₃H₅NS₂)₃]_n, the Cd^II atom is coordinated by three S and three Cl atoms in a mer arrangement.

catena-Poly[[[bis­(aceto­nitrile-κN)(4,4′-dimeth­oxy-2,2′-bi­pyridine-κ²N,N′)copper(II)]-μ-tri­fluoro­methane­sulfonato-κ²O:O′] tri­fluoro­methane­sulfonate]

The title Cu^II complex shows the typical Jahn–Teller distortion of the octa­hedral coordination sphere, defined by the N atoms of a 4,4′-dimeth­oxy-2,2′-bi­pyridine and two aceto­nitrile ligands in the equatorial plane and two O atoms of tri­fluoro­methane­sulfonate anions in the elongated axial positions.

4-(Di­methyl­amino)­benzohydrazide

The title mol­ecule is essentially flat; in the crystal the mol­ecules are linked by a system of hydrogen bonds formed by the hydrazido group and consisting of chains of fused rings.

Pyridine-4-carboxamidoxime N-oxide

The mol­ecular structure of pyridine-4-carboxamidoxime N-oxide is presented, which gives a two-dimensional supra­molecular crystal structure.

7-Meth­oxy­penta­cyclo­[5.4.0.0^2,6.0^3,10.0^5,9]undec­ane-8,11-dione

The crystal structure of a meth­oxy-substituted Cookson's dione derivative is presented.

(8-Hy­droxy-6-meth­oxy-1-oxo-1H-isochromen-3-yl)methyl formate: a supra­molecular framework

In the crystal of the title compound, mol­ecules are linked by C—H⋯O hydrogen bonds and a C—H⋯π inter­action, forming a supra­molecular framework.

6-[(2-Hy­droxy-5-methyl­anilino)methyl­idene]-4-nitro­cyclo­hexa-2,4-dien-1-one

The title compound is nearly planar with a dihedral angle between the aromatic rings of 1.41 (8)°. The phenolic O atom is deprotonated and the N atom of the azomethine unit carries the proton, thereby forming an intra­molecular N—H⋯O hydrogen bond. In the crystal, the mol­ecules form inversion dimers via pairwise O—H⋯O hydrogen bonds.

Ethyl 3,4-bis­(acet­yloxy)-2-(4-meth­oxy­phen­yl)pyrrol­idine-1-carboxyl­ate

The title compound features a twisted, tetra-substituted pyrrolidine ring, and has an N-bound ethyl­carboxyl­ate substituent with the N atom flanked by a methyl­ene group on one side and a C-bound 4-meth­oxy­phenyl group on the other. These carbon atoms are linked by two methine carbon atoms, each of which bears an acet­yloxy substituent.