caa a22 4500 463191641 CHVBK 20180406164910.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10973-006-7628-9 doi (NATIONALLICENCE)springer-10.1007/s10973-006-7628-9 Spectral and thermal studies on new hydrazinium metal sulfite dihydrates [Elektronische Daten] [L. Vikram, D. Shanthakumar, R. Ragul, B. Sivasankar] Some new hydrazinium transition metal sulfite dihydrate complexes of the formula (N2H5)2M(SO3)2(H2O)2 where M=Fe, Co, Ni, Cu and Zn have been prepared and characterized by hydrazine and metal analyses, magnetic studies, electronic and infrared spectra and thermal analysis. The magnetic studies coupled with electronic spectra of iron, cobalt, nickel and copper complexes indicate their high spin octahedral nature. However the zinc complex is diamagnetic and show only the charge transfer transition. The infrared spectra shows that both the hydrazinium ions are coordinated to the metal ions, the sulfite ions are present as bidentate ligand. The simultaneous TG-DTA of these complexes were investigated in air and nitrogen atmospheres. In air, cobalt, nickel and zinc complexes give respective metal sulfate as the final residue while iron and copper complexes give the mixture of respective metal oxide and sulfate as the decomposition product. In nitrogen atmosphere respective metal sulfites are formed as the end residue. Springer Science+Business Media LLC, 2007 hydrazinium metal sulfite dihydrates nationallicence metal oxides nationallicence metal sulfates nationallicence Vikram L. Department of Chemistry, Government Arts College, 643 002, Udhagamandalam, The Nilgiris, India aut Shanthakumar D. Department of Chemistry, Government Arts College, 643 002, Udhagamandalam, The Nilgiris, India aut Ragul R. Erode Arts College, Eroad, India aut Sivasankar B. Department of Chemistry, Government Arts College, 643 002, Udhagamandalam, The Nilgiris, India aut Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 89/2(2007-08-01), 521-524 1388-6150 89:2<521 2007 89 10973 https://doi.org/10.1007/s10973-006-7628-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-7628-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vikram L. Department of Chemistry, Government Arts College, 643 002, Udhagamandalam, The Nilgiris, India aut NATIONALLICENCE 700 1- Shanthakumar D. Department of Chemistry, Government Arts College, 643 002, Udhagamandalam, The Nilgiris, India aut NATIONALLICENCE 700 1- Ragul R. Erode Arts College, Eroad, India aut NATIONALLICENCE 700 1- Sivasankar B. Department of Chemistry, Government Arts College, 643 002, Udhagamandalam, The Nilgiris, India aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 89/2(2007-08-01), 521-524 1388-6150 89:2<521 2007 89 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer