Preparation and spectroscopic characterization of copper [II], Cobalt [II] chelates with multidentate bisazodianils as Ligands

A series of Mn [II] Co [II] and Cu [II] complexes with a number of newly prepared bisazodianil ligands are prepared. The complexes are characterized by elemental and thermal analyses, IR, electronic and ESR-spectra. The composition and geometry of the complexes under study are established

Synthesis and characterization of new cobalt [II] and copper [II] complexes of tetrazamacrocyclic ligands

A new macrocyclic Co[II] complex was prepared by metal-controlled condensation reaction between furan-2,3-dicarbaldehyde and 1,2-diaminoethane. Simple reactions led to the isolation of isothiocyanate and nitrite derivatives. Template synthesis of the macrocyclic Cu[II] complex was unsuccessful, however reaction of furan-2,3-dicarbaldehyde and 1,3-diaminopropane in ethanol gives a tetraazamacrocyclic ligand [L], Cu[II] complexes of L were prepared by a simple addition reaction. Various physical properties of the complexes have been studied

Spectroscopic studies of some schiff bases derived from indole and aniline derivatives or diamino Triazole with benzaldehyde derivatives

The electronic absorption spectra of the Schiff bases derived from indole and aniline derivatives or diaminotriazole with benzaldehyde derivatives were investigated in organic solvents of varying polarities. The important bands in IR-spectra of the compounds, as well as the main signals in 1H-NMR spectra were assigned and discussed in relation to molecular structure

Spectral characteristics of schiff bases derived from 2,6 diamino pyridine and benzaldehyde derivatives

The spectrophotometric studies of Schiff bases were the subject of several investigations [1-5]. However, relatively little attention has been given to the spectral behaviour of more recent dianils [6], which have drawn the attention as efficient chelating compounds [7-9]. The present study deals with the uv-vis, IR, [1]H nmr and mass spectrometric investigation of a series of dianils based on 2,6-diaminopyridine, in order to elucidate their molecular structure on the spectral characteristics

Co [II], Ni [II] and Cu [II] complexes with some benzoyl, m-Hydroxy and p-Hydroxy benzoyl Hydrazones derived from hydroxy arylidene derivatives of benzoic hydrazide

A new series of [ML Cl2 [H2O]2] complexes [where M=Co [II], Ni [II] or Cu [II] ions and L is bidentate hydrazone ligand] have been synthesized and characterized by elemental and thermal analysis, conductance measurements as well as IR, electronic and EPR spectra. The shift of the C=O and C=N bands in the IR spectra of the complexes are utilized for the determination of the coordination bond length