Tin tetraisopropoxide

The alcoholysis reactions of tin(iv) alkoxides are comparatively faster than those of the silicon and germanium analogues and proceed to completion without any catalyst. Bradley thus prepared a number of primary, secondary and tertiary alkoxides by the alcoholysis reactions of tin tetraisopropoxide isopropanolate with various alcohols in the presence of benzene (Eq. 2.89) ... 

However, in the alcoholysis reaction of tin tetraisopropoxide isopropanolate with tert-heptyl alcohol in refluxing toluene or benzene, Gupta could isolate... 

The differences in solubility of metal isopropoxides and their alcoholates have led to the crystallization of pure isopropoxide isopropanolates of some tetravalent elements. For example, zirconium tetraisopropoxide is a viscous supercooled liquid which dissolves in excess of isopropyl alcohol and crystallizes out in the form of pure white crystals which were characterized as Zr(OPr )4.Pr OH. Similarly tin tetraisopropoxide and cerium tetraisopropoxide have been obtained as crystalline alcoholates, Sn(OPr )4.Pr OH ° and Ce(OPP)4.Pr OH which were used as the starting materials for the synthesis of a number of new alkoxides. 

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