Department of Chemistry, University of Rajasthan, Jaipur-302 004, Rajasthan, India E-mail : Manuscript received 23 August 2012, revised 30 April 2014, accepted 21 June 2014 Reaction of VO(OPri )3 with HOCMe2 (CH2 )CMe2OH in 1 : 2 molar ratio affords dimeric homometallic glycolate complex, [VO(OGO)(OGOH)]2 (1) (where OGO = doubly deprotonated form of the 2,5-dimethyl-2,5-hexanediol). Reactions of (1) with different metal isoproposides in 1 : 2 molar ratio yield a novel class of heterobimetallic

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... sopropoxideglycolate derivatives of formula [VO(OGO)2 {M(OPri)n-1}]2 (M = Al (n = 3), (2); Ti (n = 4), (3); Nb (n = 5), (4). Reactions of [VO(OGO)2 {Ti(OPri )3 }]2 (3) with an excess MeOH and Me3COH afford [VO(OGO)2 {Ti(OMe)3 }]2 (5) and [VO(OGO)2 {Ti(OCMe3 )3 }]2 (6), respectively. All of these new complexes have been characterised by elemental analyses, molecular weight measurements, and spectroscopic (IR, 1H, 13C, 27Al, 51V NMR) studies.