Metal directed syntheses of metallocyclophanes containing triangular arrays of interacting redox active octahedral metal centres, x-ray crystal structure of [W(Tp ∗)(NO)(OC 6H 40)] 3

Abstract

The trimeric metallocyclophanes [M(NO)(HB(3,5-Me 2,C 3,HN 2) 3(O 2C 6H 4] 4, (M = Mo, syn, syn-isomer; M = W, anti, syn-isomer) have been obtained from metal directed reactions involving the octahedral precursor complexes [M(NO)(HB(3,5-Me 2C 3HN 2) 3I 2] and 1,4-dihydroxybenzene, the structure of the tungsten complex being confirmed by an X-ray diffraction study. Both compounds exhibit three well resolved reduction processes in their cycle voltammograms showing that they can exist in four distinct oxidation states.