118398-34-8Relevant articles and documents
Formation of μ-silylene μ-hydrido manganese-platinum heterobimetallics via oxidative addition of (OC)5MnSiR2H to zerovalent platinum compounds and the structure of (OC)4Mn(μ-PPh2)(μ-H)PtPh(PPh3), a product of a solvolysis of a silylene bridge
Powell, John,Sawyer, Jeffery F.,Shiralian, Mahmoud
, p. 577 - 583 (2008/10/08)
The complexes (OC)5MnSiR2H (R = Me, Ph, Cl) react with Pt(C2H4)(PPh3)2 or Pt(PPh3)4 via oxidative addition of the Si-H bond across Pt to give the μ-silylene μ-hydrido complexes (OC)4Mn(μ-SiR2)(μ-H)-Pt(PPh3) 2. These complexes react with PEt3 to give (OC)4Mn(μ-SiR2)(μ-H)Pt(PEt3)2, react reversibly with CO to give (OC)4Mn(μ-SiR2)(μ-H)Pt(PPh3)(CO), and react with MeOH or H2O to give (OC)4Mn(μ-PPh2)(μ-H)PtPh(PPh3) (8) (a product of P-Ph bond cleavage). The structure of 8 has been determined by single-crystal X-ray diffraction. Complex 8 is monoclinic, space group P21/c, with a = 12.929 (2) A?, b = 26.382 (5) A?, c = 11.245 (2) A?, β = 110.52 (1)°, V = 3592 A?3, and Dcalcd = 1.63 g cm-3 for 7 = 4. The structure was refined to R = 0.0348 and wR = 0.0460 for the 4763 reflections with I > 3σ(I). The structure of 8 consists of distorted pseudo-square-planar Pt and pseudooctahedral Mn centers with trans phenyl and hydride ligands on Pt. The Mn and Pt atoms are separated by 2.864 (1) A? and bridged by μ-PPh2 and μ-H ligands. The position of the μ-H was located and refined. Associated bond lengths are Pt-H = 1.64 (8) A? and Mn-H = 1.80 (8) A?; 〈PtHMn = 113 (4)°.
