Dinuclear macrocyclic systems

It should be noted that 02 binding mode, stability, reversibility and oxygnation activity strongly depend on ligand properties. In order to bind O2 geometrical constraints seem to be most important and a dinuclear (macrocyclic) copper system is not required. 

Linkage isomerizations, osmium, 37 335-339 Linked cubane clusters, Fe—S proteins, biological implications, 38 55-56 Linked macrocyclic ring systems, 45 75 dinuclear systems, 45 89-95 triaza ring systems, 45 76-87 Li—N—Li linkages, 37 100-101 Lipoxygenase, inhibitors, 36 41 Liquid-liquid extraction of metal ions, 9 1-80 with acidic P-based extractants, 9 34-48 with acidic P-based extractants dinuclear, 9 47-48 mononuclear, 9 34-47 with amines and amine oxides, 9 49-56 complexes in, 9 68-71 countercurrent extraction method, 9 15-25... 

A systematic structural study of the DPX Pacman framework has been provided by a homologous series of dinuclear zinc, copper, and nickel derivatives. The molecular structures of the homobimetallic zincfll), copper(II), and nickel(II) complexes of the DPX construct (5-7) are shown in Fig. 3. Trends in bond lengths and angles of macrocyclic core structures and side chains agree well with those observed in related systems including H4(DPA), H4(DPB), and l,2-bis[5-(2,3,7,8-12,13,17,18-octaethyIporphyrinato)]-cw-ethene porphyrins (80-83). 

B. D. Curtis, C. J. Dubois, D. L. Electrochemical Reduction of CO2 Catalyzed by a Dinuclear Palladium Cooperativity OrganometalUcs 1995, 14, 4937. (k) Ogata, T. Yanagida, S. Brunschwig, B. S. Fujita, E. Mechanistic and Kinetic-Studies of Cobalt Macrocycles in a Photochemical CO2 Reduction System - Evidence of C0-CO2 Adducts as Intermediates /. Am. Chem. Soc. 1995,117, 6708. (1) Arana, C. Keshavarz, M. Potts, K. T. Abruna, H. D. Electrocatalytic Reduction of CO2 and 0-2 with Electropolymerized Films of Vinyl-Terpyridine Complexes of Fe, Ni and Co Inorg. Chim. Acta 1994, 225, 285. 

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