EPR study of vanadyl complexes with Schiff bases derived from S-methyl-carbodithioato-hydrazine

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" EPR study of vanadyl complexes with Schiff bases derived from S-methyl-carbodithioato-hydrazine "
M. O. H. Al-Turabi

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	1112645
Doc. No	:	TLpq230741061
Main Entry	:	M. O. H. Al-Turabi
Title & Author	:	EPR study of vanadyl complexes with Schiff bases derived from S-methyl-carbodithioato-hydrazine\ M. O. H. Al-Turabi
College	:	King Fahd University of Petroleum and Minerals (Saudi Arabia)
Date	:	1992
student score	:	1992
Degree	:	M.S.
Page No	:	125
Abstract	:	An EPR line width study at 9 GHz was focussed on oxovanadium(IV) systems in the motional narrowing region. The anisotropy of rotation (N) and the correlation time usd(\tau\sb{R})usd were determined. The first system is bis(S-methyl-3-isopropylidenehydrazinecarbodithioato)oxovanadium(IV) in toluene. The second system is S-methyl-N-5-methoxysalicylidenehydrazinecarbodithioatophenanthrolineoxovanadium(IV) in methylene chloride. The magnetic parameters of these two systems were determined. N obtained for the first system (2.5 0.5 at an axis usd\bar{Z}=Y)usd was found to be consistent with the Stokes-Einstein model and the Allowed-Values Equation (AVE) for a monomer in solution with a trans structure. N obtained for the second system (1.7 0.5 at an axis usd\bar{Z}=Y)usd was found to be consistent with the Stokes-Einstein model and the AVE. From the molecular relaxation in liquids analysis, it seems that the solute in the second system is experiencing more stickiness behavior than that in the first system. The magnetic parameters of S-methyl-N-salicylidenehydrazinecarbodithioatophenanthrolineoxovanadium(IV) in toluene were also determined.
Subject	:	Chemistry
	:	Pure sciences