83666-22-2Relevant academic research and scientific papers
Some reactions of dipalladium(I) and diplatinum(I) complexes of the type [M2(μ-SPR′2)2(PR3) 2] (M = Pd, Pt; R, R′ = alkyl, aryl). Crystal and molecular structure of [Pd2(μ-SPPh2)2(CNMe) 2]·CHCl3
Messbauer,Meyer,Walther,Heeg,Rahman, A. F. M. Maqsudur,Oliver, John P.
, p. 272 - 277 (2008/10/08)
Exchange of both terminal tertiary phosphine ligands of [M2(μ-SPR′2)2(PR3) 2] (M = Pd, Pt; R, R′ = alkyl, aryl) complexes readily occurs with P(OPh)3, PhP(OPh)2, Ph2PCH2PPh2, and CNR″ (R″ = Me, t-Bu). Ph2PCH2PPh2 acts as a monodentate ligand in the complex thus obtained. No insertion reactions into the metal-metal bond of [M2(μ-SPR′2)2(PR3) 2] are observed with CNR″, CO, S8 or SO2. The new complexes are characterized by means of 1H, 31P, and 195Pt NMR and IR spectroscopy. The crystal and molecular structure of [Pd2(μ-SPPh2)2(CNMe) 2]·CHCl3 has been determined from single-crystal X-ray data collected by counter methods. The structure was solved with use of the nonstandard triclinic unit cell P1 with dimensions a = 11.268 (4) A?, b = 14.402 (7) A?, c = 11.790 (3) A?, α = 85.55 (3)°, β = 70.09 (2)°, and γ = 68.26 (3)°. The standard dimensions for the reduced cell were a = 11.790 (3) A?, b = 14.402 (8) A?, c = 11.268 (4) A?, α = 111.74 (3)°, β = 109.91 (2)°, and γ = 85.55 (3)°. The calculated and observed densities, Z = 2, are 1.69 and 1.68 g cm-3, respectively. Full-matrix least-squares refinements gave discrepancy factors of RF = 0.028 and RwF = 0.046 for 4856 reflections with Io > 3σ(I). The structure determination has shown that the palladium(I) atoms are directly bonded. The Pd-Pd distances in the two independent molecules are 2.608 (1) and 2.600 (1) A?. The other distances around Pd are as follows: Pd-S, 2.394 (1) and 2.382 (1) A?; Pd-P, 2.230 (1) and 2.239 (1) A?; Pd-C, 2.021 (4) and 2.009 (4) A?.
