C 12 H 40 Cl 6 N 4 O 4 P 4 Zn 3 ,monoclinic, C2/c (no. 15), a =16.8933(5) Å, b =9.1740(4) Å, c =21.5013(7) Å,Source of material 0.78 g(7.17 mmol)(Dimethylphosphoryl)methanamine (dpma) wasdissolved in basicethanol(p.a.,adjustedtopH8-9 by an ammonium hydroxide solution (20%),1,5 ml). To get amolar ratio of 3:4 zinc(II)chloride : dpma,0.73 g(5.38 mmol) zinc(II)chloride was added to the solution. The reaction mixture was heated to 50°C and stirred for 2h.Cooling to room temperature yielded in a viscose liquid. Recrystallization from ethanol -byslow evaporation at 60°C -g ave needle shaped colourless crystals. The Ramanspectrum was measured using aneodymium doted yttrium-aluminum-garnet-laser (Nd:YAG) on aM ultiRam spectrometer from Bruker, 4000-60 cm -1 :3282(w), 3254(m), 3224(w,