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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 15, Number 6
BKCSDE 15(6)
June 20, 1994 

Comparison of the Ligating Ability of Anonic Transition Metal Complex (Mn(CO)5-), Transition Metal Hydrides (HCr(CO)5-, HW(CO)5-, cis-HW(CO)4P(OMe)3-, HFe(CO)4-, trans-HFe(CO)3P(OMe)3-), and Traditional Ligands (Br-, P(C6H5)3) to M(CO)50 (M = Cr, W)
Yong K. Park, In S. Han, Marcetta Y. Darensbourg
Heterobimetallic complexes have a donor-accepter metal-metal bond in which two electrons from the electron-rich metal moiety are donated to the other electron-deficient one. Based on the competition reactions, Cotton-Kraihanzel force constants, ν(CO)IR band resolution and the relative nucleophilicity comparison of the donor ligands, the following relative ligating ability of the donor ligands toward M(CO)5 (M=Cr, W) is assessed: cis-HW(CO)4P(OMe)3-, HW(CO)5- > HCr(CO)5--Br- > trans-HFe(CO)3P(OMe)3- > Mn(CO)5- > HFe(CO)4- > PPh3
436 - 442
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