N-Donor ligand

Although the majority of ruthenium complexes contain tertiary phosphines as co-ligands, N-donor ligands are present in complexes obtained with Ru(tmeda) Cp [45], RuCl(Me2bpy)(PPh3)2 ]46], RuQ(L) [L = (dmpz)2-acetate [47], 2,6-(dmpz)2-... 

Table III contains results from metal carbonyl complexes, some efficient examples being depicted in Fig. 5. In many cases, the most important contribution to the nonlinearity derives from other ligands (N-donor ligands, carbocycles, and car-benes). Many pyridine and arene complexes have EFISH-derived negative p values, consistent with these complexes undergoing a decrease in dipole moment or change in direction of dipole moment between the ground and excited states.

The coordination number of Ni rarely exceeds 6 and its principal stereochemistries are octahedral and square planar (4-coordinalc) with rather fewer examples of trigonal bipyramidal (5), square pyramidal (5), and tetrahedral (4). Octahedral complexes of Ni arc obtained (often from aqueous solution by replacement of coordinated water) especially with neutral N-donor ligands such as NH3, en, bipy and phen, but also with NCS, N02 and the 0-donor dimethylsulfoxide. dmso (Me2SO). 

The nitrogen atom in ri -pyrrolylmanganesetricarbonyl forms a donor-acceptor bond with transition metals. Complexes in which the pyrrolyl ring behaves as a tt ligand for the manganese atom and n-donor for the other metal were synthesized 12 (M = Mn, Re) [78JOM(157)431]. The binuclear heterobimetallic complexes... 

Platinum(IV) forms complexes with a range of ligands [1, 2, 10, 11]. 3.10.1 Complexes of N-donors... 

Compounds with N-donor ligands tend to be more stable and not to undergo reductive elimination ... 

Complexes of lanthanide ions with N-donor ligands. J. H. Forsberg, Coord. Chem. Rev., 1973,10, 195-226 (129). 

Alkali metal derivatives of 2-(trimethylsilyl)aminopyridines can be further derivatized by insertion of 1,3-dicyclohexylcarbodiimide. Functionalized guani-dinates are formed in this reaction via a 1,3-silyl shift. Scheme 170 illustrates the reaction sequence as well as the preparation of an aluminum complex of the modified ligand, which exhibits pseudo jS-diketiminate binding of the metal center, thus exemplifying the coordinative versatility of this new multi-N-donor system. ... 

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