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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 16, Number 3
BKCSDE 16(3)
March 20, 1995

Title	Catalytic Activities of Pd(Ⅱ), Pd(Ⅰ) and Pd(O)-diphosphine Complexes for Styrene Oxidation
Author	Young-Je Cho, Kyung-Chae Kim, Jong-Hwa Jeong, Yu-Chul Park*, Myung-Ki Do
Keywords
Abstract	The catalytic activities of palladium(0,Ⅰ,Ⅱ )-diphosphine complexes were investigated in styrene oxidation using H2O2 as terminal oxidant. The rates showed a dependence on the chelate ring patterns of complexes (PdCl2L); 5-membered ring (L=dppe: 1,2-bis(diphenylphosphino)ethane) < 6-membered ring (L=dppp: 1,3-bis(diphenylphosphino)propane) < 4-membered ring (L= dppm: bis(diphenylphosphino)methane). This sequence correlates with the ligand field strength and interactions between metal and phosphine ligands. Pd(Ⅱ,Ⅰ)-diphosphine complexes which are capable of making 4-membered chelate ring showed an enhancement of catalytic activities for styrene oxidation. The catalytic activities of Pd(0,Ⅰ,Ⅱ)-diphosphine complexes are described in terms of electronic and steric factors.
Page	211 - 214
Full Text	PDF

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