The 7i-butyl alcohol solution of o-fluorobenzyl chloride or p- fluorobenzyl chloride and Sn was heated at reflux for 5 h to yield tri( o-fluorobenzyl)tin chloride (1) and tetra(p-fluorobenzyl) tin (2) , respectively. The crystal and molecular structures of compounds 1 and 2 were determined by X-ray diffraction study. TTie crystal 1 are monoclinic, space group P2(l)/n with a =0.5896(9) nm, 6 = 1.262(2) nm, c =2.634(4) ran, V= 1.959(5) nm~3, Z = 4, D-x=1.632g/cm~3, //(Mo Ka) = 14.69 cm~-1, F(000)=952, Wr-2= 0.0541, Wr-2 =0.1280. The crystal 2 belongs to monoclinic, space group Cc with a = 1.0778(6) nm, b = 2. 3312(14) nm, c = 1.0888(7) nm, F = 2.460(3)nm~3, Z = 4, D-K = 1.499 g/cm~3, //(Mo Ka) = 10.82 cm~-1, F(OOO) = 1112, Wr-2=0.0302, wR-2 = 0. 0590. The bond lengths of Sn-C are 0.2136 - 0.2148 and 0.2138 - 0.2180 nm, respectively. The bond length of Sn-Cl is 0.2378 nm. The tin atom adopts a distorted tetrahedral geometry.

Key words: ORGANO TIN COMPOUNDS, XRD, CRYSTAL STRUCTURE