New mixed ligand complexes of the following stoichiometric formulae: M(2-bpy)2(RCOO)2·nH2O, M(4-bpy)(RCOO)2·H2O and M(2,4’-bpy)2(RCOO)2·H2O (where M(II)=Zn, Cd; 2-bpy=2,2’-bipyridine, 4-bpy=4,4′-bipyridine, 2,4′-bpy=2,4′-bipyridine; R=C2H5; n=2 or 4) were prepared in pure solid-state. These complexes were characterized by chemical and elemental analysis, IR and conductivity studies. Thermal behaviour of compounds was studied by means of DTA, DTG, TG techniques under static conditions in air. The final products of pyrolysis of Cd(II) and Zn(II) compounds were metal oxides MO. A coupled TG/MS system was used to analyse of principal volatile products of thermal decomposition or fragmentation of Zn(4-bpy)(RCOO)2·H2O under dynamic air and argon atmosphere. The principal species correspond to: C+, CH+, CH3 +, C2H2 +, HCN+, C2H5 + or CHO+, CH2O+ or NO+, CO2 +, 13C16O2 + and 12C16O18O+ and others; additionally CO+ in argon atmosphere.
下列
化学式的新混合
配体络合物:M(2-bpy)2(RCOO)2-n 、M(4-bpy)(RCOO)2-
H2O 和 M(2,4'-bpy)2(RCOO)2- (其中 M(II)=
锌、
镉;2-bpy=
2,2'-联吡啶,4-bpy=4,4′-联
吡啶,2,4′-bpy=2,4′-联
吡啶;R=
C2H5;n=2 或 4)的纯固态制备。通过
化学和元素分析、红外和电导率研究对这些复合物进行了表征。在空气中的静态条件下,通过 DTA、DTG 和 TG 技术对化合物的热行为进行了研究。
镉(II)和
锌(II)化合物热解的最终产物是金属氧化物 MO。在动态空气和
氩气环境下,使用 TG/MS 耦合系统分析了 Zn(4-bpy)(RCOO)2- 热分解或碎裂的主要挥发性产物。主要物质包括C+、CH+、
CH3 +、
C2H2 +、HCN+、 + 或 CHO+、C + 或 NO+、
CO2 +、13C16O2 + 和 12C16O18O+ 等;此外,在
氩气环境中还包括 CO+。