A novel tetranuclear rhodium complex has been synthesized by reaction of N, N ‘-dimethyl- N, N ‘-bis[2-(diphenylphosphino)ethyl]-1,4-phenylenediamine with a “Rh(I) source” generated from the reaction between [RhCl(coe) 2 ] 2 (coe = cyclooctene) and AgOTs (OTs = p -toluenesulfonate). Significantly, the complex can be reacted with small molecules that selectively break the N−Rh links to afford flexible, 52-membered tetranuclear macrocycles.
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Liu et al. (2002) studied this question.
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