Functionalised tetraarylstannanes Sn[C6H4-R]4 (R=–CH(CH2O)2, –CHO, –COOH, –CHN–NH–C6H3-2,4-(NO2)2, –CH2OH, –CO–NH–CH2–COO–CH3, –CH[N(C2H4)2O]2)

Abstract Reaction of tin tetrachloride with the appropriate Grignard reagent gave Sn[C 6 H 4 –CH(OCH 2 ) 2 ] 4 ( 2 ), which was transformed to Sn[C 6 H 4 –CHO] 4 ( 3 ) and its hydrazido and amino derivatives Sn[C 6 H 4 –CHN–NH–C 6 H 3 -2,4-(NO 2 ) 2 ] 4 ( 5 ) and Sn{C 6 H 4 –CH[N(C 2 H 4 ) 2 O] 2 } 4 ( 8 ). Oxidation of ( 3 ) produced Sn[C 6 H 4 –COOH] 4 ( 4 ) while reduction of ( 3 ) gave Sn[C 6 H 4 –CH 2 –OH] 4 ( 6 ). From the acid 4 , an amino acid Sn[C 6 H 4 –CO–NH–CH 2 –CO–OCH 3 ] 4 ( 7 ) could be obtained by reaction with the methyl ester of glycine. All compounds were isolated in pure form with yields of 40–64% and were characterised by spectroscopic means (heteronuclear NMR) or by X-ray structure determination ( 3 ).