Chemistry and insulin-like properties of vanadium(IV) and vanadium(V) compounds.

The spectral and magnetic properties of simple high spin cobalt(II) complexes are reviewed with the aim of showing how it is possible to relate the experimental data to the electronic structure and the coordination geometry of the complexes. It is hoped that this may be of help to all researchers who need to characterize cobalt(II) complexes or use cobalt(II) as a spectroscopic probe. The data relative to electronic, EPR, MCD, NMR spectra as well as to magnetic susceptibility measurements are interpreted within an Angular Overlap approach. Energy level diagrams are employed to calculate the electronic spectra and then, applying the relevant perturbation μ, g, A values are calculated for different chromophores in different coordination environments. The underlying theory is sketched paying in every case much attention to show the possibility of calculating the electronic properties in low symmetry environments. An extensive compilation of available experimental data is presented. The chromophores are classified according to the coordination number and according to the donor atom set.

Spectral-structural correlations in high-spin cobalt(II) complexes

In vitro antitumour and antibacterial studies of some Pt(IV) dithiocarbamate complexes

Pd-catalyzed oxidative annulation of hydrazides with isocyanides: synthesis of 2-amino-1,3,4-oxadiazoles.

Synthesis and antitumor studies on novel Co(II), Ni(II) and Cu(II) metal complexes of bis(3-acetylcoumarin)thiocarbohydrazone

Synthesis and structural studies of some first row transition metal complexes of acetone isonicotinoyl hydrazone

Magnetic and spectral studies on N-(thiophene-2-carboxamido)salicylaldimine complexes of some bivalent 3d metal ions

Picolinoyl hydrazide complexes of some first row transition metal ions

Nicotinoyl hydrazide, L, complexes of the MLCl2 · n EtOH type [M = manganese(II), iron(ll), cobalt(II), nickel(II) and copper(II); n = 0 or 1], WL2) (NO3)2 [M = cobalt(II) and nickel(II)] and mixed metal complexes such as HgCo2 L2 Cl6 and (NiL2)HgI4 have been prepared and their nature and structure studied by molar conductance, magnetic susceptibility, electronic, e.s.r. and i.r. spectral measurements. Octahedral structures have been proposed for all the complexes except MnLCl2, CoLCl2 and HgCo2 L2 C16 for which tetrahedral geometry is suggested.

Nicotinoyl hydrazide complexes of some first row transition metal ions

Complexes of titanium and zirconium tetrahalides with isonicotinic acid hydrazide and its acetyl and benzoyl derivatives

R. C. Aggarwal

Papers

Synthesis and structural studies of some first row transition metal complexes of acetone isonicotinoyl hydrazone

Magnetic and spectral studies on N-(thiophene-2-carboxamido)salicylaldimine complexes of some bivalent 3d metal ions

Picolinoyl hydrazide complexes of some first row transition metal ions

Nicotinoyl hydrazide complexes of some first row transition metal ions

Complexes of titanium and zirconium tetrahalides with isonicotinic acid hydrazide and its acetyl and benzoyl derivatives