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A bimetallic chromium siloxane complex, [Cr(O)2{(OSiPh2)2O}]2 (1), containing a unique 12-membered metallacyclic [-O−Si−O−Cr−O−Si−]2 fragment in a pseudo chair type conformation, results from the reaction of 1,1,3,3-tetraphenyldisiloxane-1,3-diol with chromium(vi) oxide.
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Abbenhuis et al. (1997) studied this question.
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