Synthesis, Characterization, and Thermodynamic Study of the Solid State Coordination Compound Ca(Nic)2(s) (Nic = Nicotinate)
Synthesis, Characterization, and Thermodynamic Study of the Solid State Coordination Compound Ca(Nic)2(s) (Nic = Nicotinate)
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DOI：
10.1021/je800337w
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发表时间：
2008-11
影响因子：
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通讯作者：
Y. Di;Y. Kong;Wei-wei Yang;Lei Sun;Z. Tan
中科院分区：
文献类型：
--
作者：
Y. Di;Y. Kong;Wei-wei Yang;Lei Sun;Z. Tan
A novel compound, anhydrous calcium nicotinate Ca(Nic)2(s) (Nic = nicotinate), was synthesized by the method of room-temperature solid phase synthesis. FTIR, chemical, and elemental analyses and an X-ray powder diffraction technique were applied to characterize the structure and composition of the complex. Low-temperature heat capacities of the solid coordination compound have been measured by a precision automated adiabatic calorimeter over the temperature range from T = 78 K to T = 400 K. The experimental values of the molar heat capacities in the temperature regions of (78 ∼ 400) K were fitted to one polynomial. The polynomial fitted values of the molar heat capacities and fundamental thermodynamic functions of the sample relative to the standard reference temperature 298.15 K were calculated and tabulated at intervals of 5 K. In accordance with Hess’ law, a thermochemical cycle was designed; the enthalpy change of the solid phase reaction of nicotinic acid with calcium hydroxide was determined to be Δ...
