A new type of transition-metal dimer based on a hexaphosphine ligand system: Co2 (CO) 4 (eHTP) 2+(eHTP=(Et2PCH2CH2) 2PCH2P (CH2CH2PEt2) 2)

…, GG Stanley, EC Marques

Index: Askham, Fredric R.; Stanley, George G.; Marques, Edward C. Journal of the American Chemical Society, 1985 , vol. 107, # 25 p. 7423 - 7431

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Citation Number: 30

Abstract

Abstract: The synthesis and characterization of a new hexa-tert-phosphine ligand system,(Et2PCH2CH2) 2PCH2P (CH2CH, PEt2) 2, 1, is described. This ligand has the ability to both tris-chelate and bridge two transition metals, either in a closed-mode, MM bonding geometry, or in an open-mode configuration in which the two metal atoms are 6-7 A apart. Reaction of 1 with 2 equiv of CoCI2 initially produces, in high yields, the ...