N,O-donor ligands

Considerable progress has been achieved in the electrochemical synthesis of the ICC of N,O-donor ligands. The first chelates with the coordination unit MN202 were... 

L = N-, O-donor ligands) in which the carboxy-late moiety is acting as a bidentate ligand can be prepared. Binuclear species of the type [Ni2(02CR)4(L)2]... 

The active sites of D/iM and PHM contain two catalytically essential copper ions. EPR spectra of the oxidized forms of these proteins are typical for Type 2 copper with N, O donor ligands. " The copper centers are not coupled and are at least 5 A apart.Note the stereochemistry of hydroxylation in equations (4) and (5) both reactions proceed with retention. 0 tracer experiments for the enzymes provided direct evidence for the incorporation of molecular oxygen into the substrate, and both exhibit large deuterium kinetic isotope effects. In both cases, ascorbate is the physiological reductant. These biochemical similarities are confirmed by sequence comparisons, which pinpoint a conserved catalytic domain. The copper ligands of both the oxidized or reduced states of D/3M and PHM are conserved the H-X-L (L = His or Met) motif is a common copperbinding sequence. 

Tetradentate Schiff base N—O donor ligands (salen and its derivatives) 362... 

Zinc complexes of macrocyclic N- and N/O-donor ligands (L21-L24, Fig. 52) promote the hydrolysis of bis(4-nitrophenyl) phosphate to produce 4-nitrophenyl phosphate and 4-nitrophenol via varying mechanistic pathways. For... 

Weyhermiiller T, Paine TK, Bothe E et al (2002) Complexes of an aminebis(phenolate) [O, N, O] donor ligand and EPR studies of isoelectronic, isostructural Cr(III) and Mn(IV) complexes. Inorg Chimica Acta 337 344—356... 

Vidyarame I, Crewdson P, Lefebvre E, Gambarotta S. Dinitrogen coordination and cleavage promoted by a vanadium complex of a a, n, o-donor ligand. Inorg Chem. 2007 46 8836-8842. 

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