Abstract

S.S. Parmar¹, A. Aggarwal ², M. L. Sehgal^3*, Midas Tsai² and S. Mittal⁴

DOI : http://dx.doi.org/10.13005/ojc/360106

This paper describes four oxo-manganese(II)- mono-tertiary arsine complexes: [Mn2O{(o-Ph2AsC6H4CO2)2(H2O)5}.(H2O)](structure:4),[Mn2O(o-Ph2AsC6H4CO2)2(H2O)4], and two isomeric compounds of [Mn2O{(o-(p-tolyl)2AsC6H4CO2)2}.(H2O)4] (structure 5) by reacting Mn(O2CMe)2. nH2O, (where “n” represents the number of water molecules, n=0 and n= 4) with the ligands o-R2As C6H4 CO2H having only the aryl substituents (R=Ph, p-tolyl). This work extends the argument further that deoxygenated anhydrous conditions are not a prerequisite to stabilize As(III)-Mn(II) bond with the hybrid (As-O) chelates. The prepared complexes were characterized by IR, reflectance and EPR spectral studies and were confirmed by elemental analysis and thermogravimetric studies for their structures.

Mono-tertiary arsine; Molar Conductance; Magnetic Moment; Spin-lattice Relaxation; Thermogravimetric Analysis

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