title: Spectroscopic evaluation of manganese(II) complexes derived from semicarbazones and thiosemicarbazones.
abstract: Manganese(II) complexes having the general composition Mn(L)2X2 [where L=isopropyl methyl ketone semicarbazone (LLA), isopropyl methyl ketone thiosemicarbazone (LLB), 4-aminoacetophenone semicarbazone (LLC) and 4-aminoacetophenone thiosemicarbazone (LLD) and X=Cl-, 1/2SO(4)2-] have been synthesized. All the complexes were characterized by elemental analyses, molar conductance, magnetic moment susceptibility, EI-mass, 1H NMR, IR, EPR and electronic spectral studies. All the complexes show magnetic moments corresponding to five unpaired electrons. The possible geometries of the complexes were assigned on the basis of EPR, electronic and infrared spectral studies.
authors.affiliation: Department of Chemistry, Zakir Husain College (University of Delhi), JLN-Marg, New Delhi 110002, India. schandra_00@yahoo.com
authors.forename: Sulekh
authors.initials: S
authors.lastname: Chandra
authors.forename: Lokesh Kumar
authors.initials: LK
authors.lastname: Gupta
mesh_terms: D002712:Chlorides / Q000737:chemistry; D008024:Ligands; D008345:Manganese / Q000737:chemistry*; D015394:Molecular Structure; D012664:Semicarbazones / Q000737:chemistry*; D013057:Spectrum Analysis; D013431:Sulfates / Q000737:chemistry; D013882:Thiosemicarbazones / Q000737:chemistry*
chemical_list: D002712:Chlorides; D008024:Ligands; D012664:Semicarbazones; D013431:Sulfates; D013882:Thiosemicarbazones; D008345:Manganese