二水合氯化铜与对甲基苯胺固相配位反应的热化学研究

Studies on the Thermochemistry of Solid State Coordination Reaction of Copper (Ⅱ) Chloride Dihydrate and p Toluidine

用新型的具有恒定温度环境的反应热量计，以一定比例的４ ｍ ｏｌ· Ｌ－ １ Ｈ Ｃｌ与无水乙醇混合溶液作为量热溶剂，分别测定了反应物和产物的溶解焓，设计了一个新的热化学循环，得到了固相配位反应的反应焓△ｒ Ｈθｍ ＝ ５４．７８０ ｋ Ｊ·ｍ ｏｌ－ １，估算了配合物 Ｃｕ Ｃｌ２·（ Ｃ７ Ｈ９ Ｎ）２ 标准生成焓△ｆ Ｈθｍ ＝ － ３４８．８０２ ｋ Ｊ·ｍ ｏｌ－ １。

The reaction enthalpy of solid solid coordination reaction of copper (Ⅱ) chloride dihydrate with p toluidine was determined by solution calorimetry in a new model isoperibel reaction calorimeter.The calorimetic solvent was a mixed solution consisting of muriatic acid and absolute ethyl alcohol,a new thermochemical cycle was designed to determine the standard enthalpy of formation for CuCl 2(C 7H 9N) 2. △ rH θ m =54.780 kJ·mol -1 , △ fH θ m (CuCl 2·(C 7H 9N) 2,s)=-348.802 kJ·mol -1 .