1020269-37-7

Basic information

• Product Name: Pt(P(C₆H₅)3)2H(SiH(C₆H₅)2)*C₆H₅CH₃
• CAS NO: 1020269-37-7
• Molecular Weight: 996.115
• Mol File: 1020269-37-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Pt(P(C₆H₅)3)2H(SiH(C₆H₅)2)*C₆H₅CH₃(CAS DataBase Reference)
• NIST Chemistry Reference: Pt(P(C₆H₅)3)2H(SiH(C₆H₅)2)*C₆H₅CH₃(1020269-37-7)
• EPA Substance Registry System: Pt(P(C₆H₅)3)2H(SiH(C₆H₅)2)*C₆H₅CH₃(1020269-37-7)

Safety Data

• Hazardous Substances Data: 1020269-37-7(Hazardous Substances Data)

Upstream product

• 12120-15-9 ethylenebis(triphenylphosphine)platinum⁽⁰⁾ 
• 814-98-2 1,1,2,2-tetramethyldisilane 
• 108-88-3 toluene 
• 1020269-32-2 Pt(P(C₆H₅)3)2(SiH(C₆H₅)2)2 
• 1020269-31-1 Pt(P(C₆H₅)3)2(H)(Si(C₆H₅)2SiH(C₆H₅)2) 
• 16343-18-3 1,1,2,2-tetraphenyldisilane 

Relevant articles and documents

Spectroscopic and structural studies of thermally unstable intermediates generated in the reaction of [Pt(PPh3)2(η2- C2H4)] with dihydrodisilanes

The reaction of [Pt(PPh3)2(η2C 2H4)] (1) with 1,2-dihydrodisilane HSiR 2SiR2H (R = Ph, Me) was investigated by NMR spectroscopy and X-ray diffraction analysis. In the case of R = Ph, the treatment of 1 with HSiPh2SiPh2H at -60°C afforded the disilanylplatinum hydride [Pt(PPh3)2(H)(SiPh2SiPh2H)] (2a) by an oxidative addition of Si-H to the Pt center. Complex 2a was converted to the bis(silyl)platinum complex [Pt(PPh3)2(SiHPh 2)2] (3a) by 1,2-migration of the silyl group with a first-order rate constant of 5.5(2) × 10-4 s-1 at -40°C. The silylplatinum hydride [Pt(PPh3)2(H) (SiHPh2)] (4a) was formed by the elimination of a SiPh2 unit from the toluene solution of 3a maintained at -20°C for 2 days. Then, the dimerization and reductive elimination of dihydrogen of 4a at room temperature afforded the symmetrical dinuclear complex [Pt(PPh 3)(μ-SiHPh2)]2 (6a). Complex 6a also was obtained by an alternative method wherein 1 reacted with HSiPh 2SiPh2H at room temperature. In the case of R = Me, the bis(silyi)platinum complex [Pt(PPh3)2(SiHMe 2)2] (3b) was formed even at a temperature as low as -70°C; this formation reaction was considerably faster than that of 3a, and no disilanylplatinum hydride was detected. While 3b was stable below 0°C, it underwent dimerization at room temperature to afford the unsymmetrical dinuclear complex [(PPh3)2Pt(H)(μ-SiMe 2)(μ-SiHMe2)Pt(PPh3)] (5b), in which one hydride of the Pt(PPh3)2 site binds to the Pt center in a terminal binding mode and the other hydride of the Pt(PPh3) site bridges between the Pt and the Si atoms in a nonclassical 3c-2e interaction. The liberation of one PPh3 from the Pt(PPh3)2 site in 5b afforded [Pt(PPh3)(μ;-SiHMe2)]2 (6b), which was similar to 6a; the 1H and 31P{1H} NMR data after the addition of excess PPh3 to 6b indicated the equilibrium between 5b and 6b. These results suggest that the reaction in the 1/HSiR2SiR2H system proceeds in the following order: an oxidative addition of Si-H, 1,2-migration, elimination of SiR2, dimerization accompanying the reductive elimination of dihydrogen, and liberation of PPh3.