Reactions of oxovanadium triisopropoxide with nitrogen donor ligands under controlled and anhydrous conditions have yielded two interesting series of oxovanadium (V) complexes of the type: (i) VO (OPri)2(SB) and VO(OPri)(SB)2 and (ii) VO(OPri)(S'B') and (VO)2(S'B')3 (where SBH and S'B'H2 represent the monofunctional bidentate and bifunctional tridentate Schiff base molecules, respectively). The alcoholysis reactions further give VO(OBut)2 (SB), VO(OBut)(SB)2 and VO(OBut)(S'B') type of derivatives in presence of excess of t-butanol. All the resulting complexes are coloured solids or semisolids and behave as non-electrolytes in anhydrous DMF. The IR, UV, 1H NMR and magnetic measurements have been discussed in support of the proposed structures.
J P TANDON ,R V SINGH ,M N MOOKERJEE ,
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