[en] In view of vast applications of organotin compounds, we have synthesized large number of organotin derivatives of general formulae R/sub 2/SnL/sub 2/ and [(R/sub 2/SnL)/sub 2/ where R=Ch/sub 3/, C/sub 3/H/sub 5/, C/sub 6/H/sub 11/. C/sub /H/sub 5/H/sub 2/ and L=3-benzoyl-a-metbylbonzene acetic acid, 2-[(2,3-dimethylphenyl)amino]benzoic acid, 3-(2-thiophenyl)-2-propenonic acid and 3-(2-furanyl)-2-propenoic acid. These derivatives have been characterized by NMR (/sup 1/H, /sup 13/C, /sup 119/Sn), Mass and /sup 119m/Sn Moessbauer spectroscopy. The crystal structure studies for many R/sub 3/SnL, compounds have confirmed polymeric structure