{N-[tert-Butyl(phenyl)phosphino]-N′-diphenylphosphino-N,N′-dimethylurea-P,P′}dichloroplatinum(II) chloroform solvate

Abstract

In the title compound, [PtCl2(C25H30N2OP2)]·CHCl3, the urea ligand is P,P′‐coordinated, leading to square‐planar geometry at the Pt atom [bond lengths Pt—P 2.2102 (19) Å to the Ph2P moiety and 2.2275 (18) Å to tBu(Ph)P; Pt—Cl 2.3658 (16) and 2.3658 (18) Å]. The ligand bite angle is 89.41 (7)°. The chloro­form mol­ecule is associated with the metal complex via a hydrogen‐bond system of the form C—H(⋯Cl)2.

α,ω-Bis(trialkynyltin) Compounds with a Linear or Cross-Shaped Spacer

“…These atoms are part of an eight-membered ring in a pseudochair conformation formed with two chlorine, two hydrogen, two carbon, and two tin atoms. Such close contacts are shorter than OH−Cl (3.40 Å) or NH−Cl (3.12 Å) interactions in titanium complexes but longer than CH−Cl interactions in chloroform-solvated platinum (2.76 Å) or than charge-assisted CH−Cl interactions in gold (2.59 Å) complexes. The value of the C4−H4B−Cl1 angle (140°) shows that this interaction can be described as a hydrogen bond rather than as a van der Waals contact .…”

Axial Chirality and Supramolecular Interactions: The Case of [(κ2-P,P-{PPh2NMe}2CO)CuICl]2

“…With the report of PPh 2 NMeC(O)NMeH, the first monophosphinourea possessing an easy to activate functional group, a new field was opened up . This led to the discovery of a facile route to unsymmetrically substituted bisphosphinoureas − and a novel chirality pattern for their complexes, both in the solid state and in solution. With the establishment of the chiral solid-state structure for ( R , S ) A2 ‘ -[Pd(κ 2 - P , P -{P(OC 6 H 3 Bu t 2 -2,4) 2 N(Me)C(O)N(Me)PPh 2 }Cl 2 ] ( 1 ) 4 that prevails in solution and can also be observed for cis -[Mo(CO) 4 {P(OC 6 H 3 Bu t 2 -2,4) 2 N(Me)CON(Me)PPh 2 } 2 ] ( 2 ), it became apparent that chirality is likely to be a general feature of all folded bisphosphinourea transition-metal complexes.…”