Three zinc complexes with dithiocarbamate were synthesized. They are [Zn2 (S2CNB112 )4] (1), [Zn-(S2CNBy2)2] (2) and [Zn(S2CNBy2)2Py] (3) (where By = benzyl, Py = pyridine). Their crystal structure, IR spectra and theimal stability were determined. 1 is monoclinic, space group C2/c, with a =2.3329(3) nm, b = 1.7090(2) nm, c = 1.6115(2) nm. a =90°, /?= 127.560(10)°, 7 = 90°. 2 is orthorhombic, space group Phcn, with a = 1.6219(11) nm, 6 = 1.9001(12) nm, c = 0.9376(6) nm. a = 90°, /? = 90°, 7 = 90°. 3 is triclinic, space group P-l, with a = 0.8642(6) nm, 6 = 1.3116(9) nm, c = 1.6624(11) nm. a = 106.398(1)° , ￡ = 92.633(1)°, 7 = 107.461(1)°. Compound 1 is dimeric, which belongs to the typical structure of metal dithiocarbamate complexes. 2 is monomeric which is seldom appeared in metal (except Ln, Ac series) complexes with dithiocarbamate. 2 could coordinate with pyridine to form 3. 3 is a five-coordinated complex. It is indicated that the center metal ion of 2 is unsaturated, which is the same as some in the existed reports. The thermal stability of 1 shows that it could sublime at 251 °C , so 1 may be precursor for MOCVD.

Key words: ZINC COMPLEX, CARBAMODITHIOIC ACID P, CRYSTAL STRUCTURE, THERMAL STABILITY, PYRIDINE P, IR