过渡金属亮氨酸配合物的热化学性质研究

Investigation of Thermochemical Properties of Solid Complexes of Leucine with Transition Metal

合成了3种过渡金属(铁、钴、镍)亮氨酸的固态配合物,经化学分析、元素分析、红外光谱和TG-DTA的测定,确定它们的组成分别为Fe2(Leu)6(SO4)3.H2O;Co(Leu)2C l2.0.5H2O;N i(Leu)2C l2.2H2O.用HWR-15型恒温式微机量热计测定了固态配合物的恒容燃烧能,计算了它们的标准摩尔生成焓.

Three solid complexes of L-leucine acid with Fe（ Ⅲ ）, Co（ Ⅱ ） and Ni（ Ⅱ ） were synthesized. The composition of the complexes were investigated by chemical analysis, element analysis, IR and TG-DTA. The chemical compositions of three complexes are Fe2 （ Leu ） 6 （ SO4 ） 3 · H2O, Co （ Leu ） 2Cl2 · 0.5H2O and Ni （Leu） 2Cl2 · 2H2O. The constant volume combustion energies of the complexes （△cE） have been determined by a HWR-15 type constant temperature computer calorimeter at 298.15 K. The standard molar enthalpies of combustion △cHm^θ and standard molar enthalpies of formation △fHm^θ are calculated for these complexes.