The dissolution enthalpy of the reactans and the products was determined by solution calorimetry.The calorimetric solvent is 2mol·L -1 HCl solution.A thermochemistry cycle was designed to obtain the enthalpy of coordination reaction,Δ rH m=-479.321kJ·mol -1 ,and the standardmolar enthalpy of formation of the new complex La(Tyr)(Gly) 3Cl 3·3H 2O(s) was calculated,Δ fH m[La(Tyr)(Gly) 3Cl 3·3H 2O,s298.2K]=-4695.266kJ·mol -1 .
The enthalpy of coordination reaction of manganese chloride with p toluidime has been determined by solution calorimetry in a new model isoperibol reaction calorimeter.The calorimetric solvent is a solution consisting of 3.0 mol·L -1 HCl and ethyl alcohol absolute.A new thermochemical cycle has been designed to determine the standard enthalpy of formation for Mn(p tol) 2Cl 2.According to the results,we obtained the values: Δ r H m=19.149kJ·mol -1 ,Δ f H m[Mn(p tol) 2Cl 2,s]=-590.748kJ·mol
The reaction enthalpy of solid solid coordination reaction of 8 hoxine with zinc acetate is determined by solution calorimetry in an isoperibel reaction calorimeter. The calorimetric solvent is the solution of hydrochloric acid (4 mol·L\+\{-1\}). According to the results, the value Δ \-r H \+\+\-\-m=-1.002 kJ·mol\+\{-1\} Δ \-f H \+\+\-\-m(Zn(oxin)\-2·H\-2O)=-582.123 kJ·mol\+\{-1\} are recommended. \;
The molar dissolution enthalpy of the reactants and the products of the coordination reaction of erbium nitrate with alanine hava been measured by classical solution calorimetry,the calorimetric solvent is 2mol· L－ 1 HCl solution.The standard molar reaction enthalpy of this coordination has been determined by a new chemical circle ,and =17.800kJ· mol－ 1.From the results and other auxiliary quantities ,the standard molar enthalpy of formation of the new complex Er(Ala)4(NO3)3· H2O has been calculated to be [Er(Ala)4(NO3)3· H2O,s, 298.2K]= － 3818.2kJ· mol－ 1.
