Crystal structure of catena-(2-thiobarbiturato) dithallium(I)

By powder X-ray diffraction the crystal structure of catena-(2-thiobarbiturato)dithallium(I) C4H2N2O2STl2 (C4H4N2O2S is 2-thiobarbituric acid, H(2)TBA), Tl(2)TBA, is determined. Crystallographic data for Tl(2)TBA are as follows: a = 15.1039(3) , b = 12.0818(2) , c = 3.86455(6) , beta = 97.203(1)A degrees, V = 741.34(2) (3), space group P2(1)/n, Z = 4. There are two non-equivalent thallium atoms in the structure. The Tl1 polyhedron is a distorted trigonal prism due to the shortened Tl-S contact (3.634 ), and the Tl2 polyhedron is a distorted square antiprism.