Multinuclear NMR and crystallographic study of diorganotin valproates - Part II

The new complexes: [{(Me2SnOVp)2O}2] (1), [{(Bu2SnOVp)2O}2] (2) and [{PhSn(O)OVp}6] (3) {R = Me, Bu and Ph} and sodium valproate, NaO2CCH(CH2CH2CH3)2, have been characterized by infrared, NMR, 119Sn Mössbauer and X-ray crystallography. Complexes (1) and (2) display a stannoxane structure and (3) a drum-like crystallographic arrangement.83