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of some binuclear Cu(I1) complexes bridged by oxy anions. The ligands are prepared by a multistep route from phenol derivatives and provide tetracoordinate chelation in a manner that allows binding of an additional 'exogenous' ion to each copper. Magnetic susceptibility studies of the resulting bis(bridged) species show varying degrees of antiferromagnetic coupling including a strongly coupled system with a p-hydroxy-p-phenoxy ligand set [ 71.
E. I. Solomon in 'Copper Proteins', T. G. Spiro (ed.),
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Porphyrins, with two chiral binaphthyl handles, efficiently catalyze the epoxidation of terminal olefins to give epoxides with high enantiomeric excess and turnover number.
Fe NMR chemical shifts of superstructured heme model comtransferred under argon into the NMR tube via a stainless pounds have been found to be extremely sensitive to atropisomersteel tube. 13 CO (99.7% enriched in 13 C and 11.9% in 18 O) ism and deformation (ruffling) of the porphyrin geometry. แญง 19