Divalent 3d metal complexes with formyl-vanilline derivatives, of lite type ML2 or ML2X2 (M = Cu(II), Co(II); X = Cl), were sythesized by reaction of the corresponding metal(II) chlorides with 1-[3-formyl-4-methoxy-6-hidroxybemilydene]-2-phenazinoyllhydrazine, (FDFH), 1-benzilydene-2-phenazinoyhydrazine, (BFH), and 3-formyl-5,6-dihydroxybemilydenc-2-nitro-1--methylaniline, (FBAH). The novel complexes were characterized by ESR, IR, electronic spectroscopy, molar electric conductibility measurements and magnctk studies. These compounds appear to bn hexacoordinated.
The new N-benzoyl-N-substituted phenyl thiourea ligands have been used to p1·cpare copper(ll) complexes [Cu(L)2Cl2]. The novel complexes were characterized by ESR, IR, NIR, electronic spectroscopy and conductivity measurements, Tentative geometry of the complexes involves four-coordinate environments (tetrahedral distorted D2d) for the copper ion and a monodentate behavior for ligands. In all these complexes N, N-substituted thiourea is sulphur-bonded to the copper ion.
The binuclear copper(II) complexes Cu2(L-4H)(H2O)2 (L = N,N -bis (carboxymethyl) dithiooxamide -GlyDTO and N,N-bis(1-carboxyethyl) dithiooxamide -AlaDTO) and Cu2(L-2H)Cl2 (L =methyl or ethyl ester of L) were synthesized. The structure of the complexes was studied employing IR, electronic, and ESR spectroscopy and conductivity measurements. The IR data indicate that the ligands act as bistridentates, with N, S, 0 -coordination to the copper(II) ion.
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