“…Applications of organotin (IV) compounds are very well known (Evans and Karpel , 1985 ;Kapoor et al , 2005 ;Zhang et al, 2006). The mononuclear derivatives of the general formula [R 4 N] [AO 4 SnPh 3 ] (A = S, Se, Cr, W) have been synthesized and studied spectroscopically by our group (Gueye et al , 1993 ;Sall et al , 1995 ;Diop et al, 2000Diop et al, , 2002De Barros et al , 2009Diallo et al , 2009a,b ;Qamar -Kane et al, 2009 ;Fall et al, 2010), but dealing with their SnMe 3 residue containing homologue, to the best of our knowledge, only [Et 4 N] [WO 4 SnMe 3 ] has been reported (De Barros et al , 2009 ).…”