THE SYNTHESIS, REACTIVITY AND MAGNETIC-SUSCEPTIBILITIES OF CR(IV)PORPHYRIN IMIDO COMPLEXES, CRN(R), AND ATTEMPTS TO FORM HETEROBINUCLEAR MU-IMIDO COMPOUNDS WITH CRN(R)V AND CRN(R)FE BRIDGES

The reactions of arylazides with chromium(II) porphyrin compounds lead to the production of paramagnetic (d(2)) imides, Cr-IV(Por)N(R). The complexes undergo reaction with PPh(3), benzaldehyde, CS2, CH3I and st yrene leading to transfer of the imido group. Reaction of Cr(Por)N(R) compounds with (VO)-O-IV(acac)(2) and iron(II) salicylaldimines result s in the formation of imido-bridged (CrN)-N-III(R)V(V) and (CrN)-N-III (R)Fe(III) species, as indicated by magnetic susceptibility vs tempera ture measurements down to 4.3 K.