Synthesis and spectroscopic properties of the first series of heteronuclear derivatives containing organosilicon/organotin(IV) and oxovanadium(V) moieties

Me3SiCl reacts with [VO(OGO)(OGOH)](1a) or [VO(L)(LH)] (1b) (where OGO = OCMe2CH2CH2CMe2O and L = OC6H4CH=NCH2-CH2O) in the presence of Et3N as a proton acceptor (1: 1: 1 stoichiometric ratio) in benzene to form heteronuclear derivatives [VO(OGO)(OGOSiMe(3))](2) (2) and [VO(L)(LSiMe3)] (3), respectively. The reactions of Bu3Sn( OPri) with a variety of oxovanadium(V) complexes (1a), (1b), and [VO(PhDEA)(PhDEAH)] (1c) (in a 1:1 stoichiometric ratio, where PhDEA = C6H6N( CH2CH2O)(2)) afford derivatives [VO(OGO)(OGOSnBu(3))](2) (4), [VO(L)(LSnBu3)](5), and [VO(PhDEA)(PhDEASnBu(3))] (6), respectively. Derivatives [(Ph3SiO)VO(OGO)](2) (7) and [(Ph3SiO)VO(L)] (8) have been prepared by the equimolar reactions of Ph3SiOH with [VO(OGO)(OPri)] (1d) and [VO(L)(OPri)] (1e), respectively. All these new derivatives have been characterized by elemental analyses, molecular weight measurements, and spectroscopic [IR, NMR (H-1, Si-29, V-51, and Sn-119)] studies.