Abstract
B-Chlorocatecholborane undergoes oxidative addition to M(PR 3) 3Cl (M = Rh, R = Me; M = Ir, R = Me, Et) yielding six-coordinate complexes of general formula mer, cis-(PR 3) 3Cl 2M(BO 2C 6H 4). The same M(PR 3) 3Cl complexes also react with B-bromocatecholborane to give a mixture of metal boryl homo- and heterodihalides (PR 3) 3X 1X 2M(BO 2C 6H 4) (X 1, X 2 = Cl, Br), and the observed disproportionation is believed to involve the formation of a heteronuclear halide-bridged intermediate. The alkene 4-vinylanisole failed to react with the six-coordinate, 18-electron (PR 3) 3Cl 2M(BO 2C 6H 4) complexes at ambient temperatures.
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