SYNTHESIS AND SPECTRAL STUDIES OF Ni(II) COMPLEXES WITH 2-HEPTANONESEMICARBAZONE AND 2-HETANONETHIOSEMICABAZONEAbstract
Complexes of Nickel(II) with 2-heptanonesemicarbazone (hsc) and 2-heptanonethiosemicabazone (htc) have been synthesized and characterized by elemental analysis, molar conductance measurements, magnetic moments, mass, IR and electronic/spectral studies. Synthesized complexes were found to have a general composition of Ni(L)2X2 (where X=Cl–, 1/2SO42-, NO3–, ClO4–, NCS–, CH3COO– and L=hsc or htc). Molar conductance indicates that all the complexes are non-electrolytes in nature whereas chloro complexes are 1:1 electrolytes. Metal complexes of 2-heptanonesemicarbazone were soluble in hot ethanol, methanol, acetone and DMSO and insoluble in chloroform, benzene and water, whereas metal complexes of 2-hepatanonethiosemicarbazone were soluble in ethanol, methanol and acetone, insoluble in chloroform and benzene. On the basis of IR and electronic spectral analysis thiocyanato, sulphato, perchlorato, acetato and nitrato complexes of were found to have six-coordinate octahedral geometry whereas chloro complexes were five-coordinate and having trigonal bipyramidal geometry.
Pravita Kumar, Roopakumari and Sulekh Chandra*
Department of Chemistry, Zakir Husain Delhi College, JLN Marg, New Delhi-110002, India.
15 September, 2014
14 November, 2014
27 January, 2015
01 May, 2015