Copper(II) acetate mediated coupling reactions between 2,6-bis(azidomethyl)pyridine or 2-picolylazide and two terminal alkynes afford 1,2,3-triazolyl-containing ligands L(1)-L(6). These ligands contain various nitrogen-based Lewis basic sites including two different pyridyls, two nitrogen atoms on a 1,2,3-triazolyl ring, and the azido group. A rich structural diversity, which includes mononucle...

Two novel symmetrical bis!tetradentate Schi} base ligands\ H1L and H3L\ have been prepared from the condensation of N\N?!bis"2!aminopropyl#oxamide with pyridine!1!carbaldehyde and pyrrol!1!car! baldehyde\ respectively[ The ligands react with copper"II# nitrate in basic medium to yield the dinuclear complexes ðCu1LŁ"NO2#1 and ðCu1LŁ[ ðCu1LŁ"NO2#1 reacts with sodium azide to yield the neutral din...

tow new compound of type [(chelate)2cu-oh-cu(chelate)2] x3.nh2o, where chelate=1,10-phenanthroline; x=cl¯(n=3.5) and chelate=4,4'-dimethyl-2,2'-bipyridine;  (n=5) have been synthesized and their properties investigated. the complexes show room temperature magnetic moment order of 1.0 b.m. per copper atom. the x-band esr spectrum of powdered samples at room temperature shows typical dm=1 transit...

A series of dissymmetric dinuclear complexes were synthesized, as dual site catalysts in ethylene polymerization, by coupling the allylated a-diimine complexes of the metals Ti, Zr, V, Ni and Pd with the ansa-zirconocene complex [C5H4-SiH(Me)-C5H4]ZrCl2 possessing a hydride silane moiety. The different stages of syntheses included the formation of bis(cyclopentadienide)methyl silane which was u...

The reactions of the tridentate hydrazone ligand, N'-[1-(pyridin-2-yl)ethylidene]acetohydrazide (HL), obtained by condensation of 2-acetylpyridine with acetic hyadrazide, with copper nitrate trihydrate in the presence of thiocyanate, or with CuCl2 produce two distinct coordination compounds, namely a one-dimensional helical coordination chain of [CuL(NCS)] n (1) units, and a doubly chlorido-bri...

A set of four copper(ii) complexes, and (X = Cl, Br; = N-(l-leucine methyl ester)-N'-((2-pyridin-2-yl)methyl)oxalamide and = N-benzyl-N'-((2-pyridin-2-yl)methyl)oxalamide), have been synthesized and characterized by X-ray structural analysis, electron paramagnetic resonance (EPR) spectroscopy on single crystals and by SQUID magnetization measurements. X-ray diffraction studies show one-dimensio...

-A synthetic investi :ation ofcopper(II) ibuprofenate (lbup) addition compounds with 2,2'-bipyridine (bpy), 1,10-phenanthroline (phen) and 2,9-dimethyl-l,10-phenanthroline (dmph) has led to the isolation of dinuclear adducts of the forms [Cu(Ibup)2(bpy)]z'4H20 (1) and [Cu(Ibup)2(phen)]2 (2) and a mononuclear adduct Cu(lbup)2(dmph) (3). Spectroscopic data for adducts 1 and 2 are consistent with ...