trans-Dichloridobis[dicyclo­hex­yl(4-isopropyl­phen­yl)phosphane-κP]platinum(II) acetone monosolvate

The title compound, [PtCl₂(C₂₁H₃₃P)₂]·C₃H₆O, crystallizes with an accompanying acetone solvent mol­ecule. The metal atom shows a distorted square-planar coordination environment, with a P—Pt—P angle of 172.41 (3)° as the most prominent feature. Both isopropyl fragments were treated as disordered over two conformations with occupancy ratios of 0.55 (2):0.45 (2) and 0.58 (2):0.42 (2). The solvent mol­ecule was also disordered over two orientations in a 1:1 ratio. The crystal studied was a non-merohedral twin with a twin component of 32.4%.

trans-(Ethene-1,2-di­yl)bis­(diphenyl­phosphine selenide)

In the title mol­ecule, C₂₆H₂₂P₂Se₂, both P atoms have distorted tetra­hedral environments, resulting in effective cone angles of 177 and 174°. Inversion twinning was detected and refined to a ratio of 0.35:0.65. Weak inter­molecular C—H...Se inter­actions are observed.

Chlorido{N-[(E)-2-(diphenyl­phosphan­yl)benzyl­idene]-2-(thio­phen-2-yl)ethan­amine-κP}gold(I)

The title compound, [AuCl(C₂₅H₂₂NPS)], crystallizes with two independent mol­ecules in the asymmetric unit in which the thio­phene fragments are disordered over two sets of sites with 0.537 (10):0.463 (10) and 0.701 (9):0.299 (9) occupancy ratios. In both cases, the thio­phene ring is rotated by approximately 180° for the second component. Important geometrical parameters include Au—P = 2.235 (2) and 2.237 (2) Å, Au—Cl = 2.286 (2) and 2.292 (2) Å, and P—Au—Cl = 177.39 (8) and 172.63 (7)°. Weak inter­molecular C—H...Cl inter­actions are observed in the crystal structure.

Dicyclo­hex­yl[4-(dimethyl­amino)­phen­yl]phosphine selenide

In the title mol­ecule, C₂₀H₃₂NPSe, the P atom has a distorted tetra­hedral environment resulting in an effective cone angle of 172°. Weak inter­molecular C—H...Se inter­actions are observed.