Thermochemical Properties of the Dissolution of Rubidium d-Gluconate Rb[d-C6H11O7]2(s) in Aqueous Solutions
作者:You-Ying Di、Yu-Pu Liu、Yu-Xia Kong、Chun-Sheng Zhou、Sheng-Li Gao
DOI:10.1007/s10953-018-0747-7
日期:2018.4
Molar enthalpies of dissolution of Rb[d-C6H11O7](s) in double-distilled water at various molalities were measured by use of an isoperibol solution–reaction calorimeter at T = 298.15 K. According to Pitzer’s electrolyte solution model, the molar enthalpy of dissolution of the title compound at infinite dilution was determined to be $$ \Delta_\texts}} H_\textm}}^\infty } = (29.76 \pm 0.72)\text
合成了一种新型配位化合物 d-葡萄糖酸铷 Rb[d-C6H11O7](s),并通过化学分析、元素分析和 X 射线衍射对其进行了表征。单晶 X 射线分析表明该晶体为单斜晶系,空间群为 P21,Z = 2。此外,Rb[d-C6H11O7](s) 中的 d-葡萄糖酸阴离子具有弯曲链构象,其中碳阴离子的原子形成两个近似平面。该化合物表现出明显的 d-葡萄糖酸阴离子与铷 (I) 阳离子的螯合,并且该阳离子与所有七个氧原子进行七配位。阴离子的晶格势能和离子体积 d-$$ \textC}}_ 6} \textH}}_ 1 1} \textO}}_7}^ - } $$C6H11O7- 从晶体学数据中获得的 UPOT = 484.23 kJ·mol-1 和 V- = 0.2004 nm3。Rb[d-C6H11O7](s) 在不同摩尔浓度的双蒸水中溶解的摩尔焓是通过使用 isoperibol