The X ray powder diffraction data of L Zn(C 6H 10 O 4N 2S 2)·0 5H 2O was collected by conventional X ray powder diffractometer. It was indexed successfully. The cell parameters were attained, a =2\^017 2(4) nm, b =0\^960 7(2) nm, c =0\^503 3(1)nm, M 20 =33, F 30 =27(0\^011 4, 100), \{ V =\} 0\^975 4 nm 3 , the density D X=1 81 g/cm 3, so Z =4, and the possible space group is ascribed to P 2 122.
