Isomer differentiation by tri-osmium cluster complexation of substituted 1, 3-cyclohexadienes

SL Ingham, BFG Johnson, IH Sadler…

Index: Ingham; Johnson; Sadler; Nairn Journal of Organometallic Chemistry, 1997 , vol. 531, # 1-2 p. 237 - 242

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Abstract

A series of methyl-and dimethyl-substituted 1, 3-cyclohexadienes have been prepared from their aromatic analogues via Birch reduction and subsequent isomerisation with Fe (CO) 3 fragments. These ligands were reacted with [Os3 (CO) 10 (CH3CN) 2] to form tri-osmium decacarbonyl cluster compounds containing the η4-coordinated substituted 1, 3- cyclohexadienes. The various isomers of the substituted dienes show a dramatic ...