THE SYNTHESIS, STRUCTURE AND CHARACTERIZA TION OF V2O6-CENTER-DOT-H3NCH2CH2NH3

A metavanadate in coffee colour, V2O6 . H3NCH2CH2NH3, was synthesized by hydrothermal method and its crystal structure was determined by sin gle crystal X-ray diffraction. Crystal data: monoclinic, space group P 2(1)/c, a = 0.552 9(2) nm, b = 1.290 0(7) nm, c = 0.568 3(2) nm, beta = 97.57(3)degrees, V = 0.401 8(3) nm(3), F(000) = 260, D-c = 2.15 g . cm(-3), Z = 2, R = 0.041, R(W) = 0.052. The structure is based on VO4 tetrahedra sharing two vertex to form a single type of chain running a long the c axis. The hydrogen bond (O ... H-N) between (VO3-)(infinity ) chains and H3NCH2CH2NH32+ was formed. IR spectrum confirmed that the ethylenediamine is protonated. The analysis of DRS and SPS are given.