98391-75-4Relevant academic research and scientific papers
Geometrical isomers of [Ph2P(CH2)2AuX2]2· crystal and molecular structures of trans,trans-[Ph2P(CH2)2AuBr2] 2 and cis,trans-[Ph2P(CH2)2AuCl2] 2
Dudis, Douglas S.,Fackler Jr., John P.
, p. 3758 - 3762 (2008/10/08)
The X-ray structure of the dinuclear gold(III) ylide complex trans,trans-[Ph2P(CH2)2AuBr2] 2 has been determined. This is the first completely characterized dimer of this type. While no metal-metal bond is suggested for the compound in its eclipsed configuration, there is an unusual semibridging halide. When the same compound stands in CDCl3 for prolonged periods, the geometrical isomer with a cis,trans configuration is formed. The chloride analogue of this cis,trans compound, formed by reaction of the gold(II) dimer with SnCl2·2H2O in CDCl3, has been characterized structurally and is reported here. For trans,trans-[Ph2P(CH2)2AuBr 2]·CDCl3, a = 11.657 (2) A?, b = 13.244 (3) A?, c = 26.374 (5) A?, β = 120.299 (13)°, Z = 4, and V = 3515.4 (1.1) A? for the yellow crystals which conform to a monoclinic C2/c space group. The cis,trans-[PhP2(CH2)2AuCl2] 2·2CDCl3 product crystallizes in P21/c with a = 12.695 (2) A°, b = 24.198 (5) A°, c = 13.2279 (2), β = 108.523 (11)°, V = 3852.8 (1.0) A°3, and Z = 4.
