Preparation, crystal structure and thermolysis mechanism of [Y(NTO)(2)NO3(H2O)(5)]center dot 2H2O

[Y(NTO)(2)NO3(H2O)(5)]. 2H(2)O was prepared by mixing the aqueous solution of lithium 3-nitro-1,2,4-triazol-5-onate and the dilute nitric acid solution of yttrium oxide. The single crystal structure was determined by a four-circle X-ray diffractometer. The crystal is monoclinic, space group Cm with crystal parameters of a = 0.677 3(2) nm, b= 2.086 6(2) nm, c=0.6551(1) nm; beta=102.98(2)degrees, V=0.9021(1) nm(3), Z=2, D-c=1.970 g.cm(-3) mu=33.49 cm(-1), F(000)=540, R=0.032, The two carbonyls of NTO anion, one NO3- and five water molecules are coordinated to Y3+. Th, coordinate bond lengths are between 0.2283 nm and 0.2478 nm, so the distorted dodecahedron is formed. Based on the thermal analysis, the thermolysis mechanism of [Y(NTO)(2)NO3(H2O)(5)]. 2H(2)O has been derived.