The complex trans-[PtCl(COCH2CH2Ph)(PPh3)2]•EtOH (1) has been synthesized by treating cis-[PtCl2(PPh2] with styrene in EtOH at 100°C under 50 atm of carbon monoxide and of hydrogen. In combination with SnCl2•2H2O, complex 1 is an intermediate in the catalytic hydroformylation of styrene. The crystal structure of 1 has been determined by X-ray crystallography. The crystals are monoclinic, space group P21/c, with a 10.95(1), b 33.16(1), c12.43(1) Å and β 109.59(3)°. The final R factor was 0.087 for 4772 observed reflexions. The platinum atom is in a slightly distorted square-planar environment. Selected bond distances are: Pt-P (mean) 2.31 Å, Pt-Cl 2.427(6) Å.
The isolation and molecular structure of trans-[PtCl(COCH2CH2Ph)(PPh3)2].EtOH, an intermediate in the hydroformylation of styrene promoted by thecis-[PtCl2(PPh3)2]-SnCl2 catalytic system
CAVINATO, GIANNI;
1988
Abstract
The complex trans-[PtCl(COCH2CH2Ph)(PPh3)2]•EtOH (1) has been synthesized by treating cis-[PtCl2(PPh2] with styrene in EtOH at 100°C under 50 atm of carbon monoxide and of hydrogen. In combination with SnCl2•2H2O, complex 1 is an intermediate in the catalytic hydroformylation of styrene. The crystal structure of 1 has been determined by X-ray crystallography. The crystals are monoclinic, space group P21/c, with a 10.95(1), b 33.16(1), c12.43(1) Å and β 109.59(3)°. The final R factor was 0.087 for 4772 observed reflexions. The platinum atom is in a slightly distorted square-planar environment. Selected bond distances are: Pt-P (mean) 2.31 Å, Pt-Cl 2.427(6) Å.Pubblicazioni consigliate
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