caa a22 4500 463190262 CHVBK 20180406164906.0 cr unu---uuuuu 170326e20071101xx s 000 0 eng 10.1007/s10973-006-7940-4 doi (NATIONALLICENCE)springer-10.1007/s10973-006-7940-4 Low-temperature heat capacity and standard enthalpy of formation of neodymium glycine perchlorate complex [Nd2(Gly)6(H2O)4](ClO4)6·5H2O [Elektronische Daten] [W. Xinmin, Q. Chuansong, Q. Songsheng, T. Zhicheng] Rare-earth perchlorate complex coordinated with glycine [Nd2(Gly)6(H2O)4](ClO4)6·5H2O was synthesized and its structure was characterized by using thermogravimetric analysis (TG), differential thermal analysis (DTA), chemical analysis and elementary analysis. Its purity was 99.90%. Heat capacity measurement was carried out with a high-precision fully-automatic adiabatic calorimeter over the temperature range from 78 to 369 K. A solid-solid phase transformation peak was observed at 256.97 K, with the enthalpy and entropy of the phase transformation process are 4.438 kJ mol−1 and 17.270 J K−1 mol−1, respectively. There is a big dehydrated peak appears at 330 K, its decomposition temperature, decomposition enthalpy and entropy are 320.606 K, 41.364 kJ mol−1 and 129.018 J K−1 mol−1, respectively. The polynomial equations of heat capacity of this compound in different temperature ranges have been fitted. The standard enthalpy of formation was determined to be −8023.002 kJ mol−1 with isoperibol reaction calorimeter at 298.15 K. Springer Science+Business Media, LLC., 2007 complex of rare earth nationallicence glycine nationallicence low-temperature heat capacity nationallicence [Nd2(Gly)6(H2O)4](ClO4)6·5H2O nationallicence standard enthalpy of formation nationallicence Xinmin W. Department of Material and Chemical Engineering, Beijing Institute of Petro-chemical Technology, 102617, Beijing, China aut Chuansong Q. Department of Material and Chemical Engineering, Beijing Institute of Petro-chemical Technology, 102617, Beijing, China aut Songsheng Q. College of Chemistry and Molecular Science, Wuhan University, 430072, Wuhan, China aut Zhicheng T. Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, China aut Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/2(2007-11-01), 569-573 1388-6150 90:2<569 2007 90 10973 https://doi.org/10.1007/s10973-006-7940-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-7940-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xinmin W. Department of Material and Chemical Engineering, Beijing Institute of Petro-chemical Technology, 102617, Beijing, China aut NATIONALLICENCE 700 1- Chuansong Q. Department of Material and Chemical Engineering, Beijing Institute of Petro-chemical Technology, 102617, Beijing, China aut NATIONALLICENCE 700 1- Songsheng Q. College of Chemistry and Molecular Science, Wuhan University, 430072, Wuhan, China aut NATIONALLICENCE 700 1- Zhicheng T. Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, China aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/2(2007-11-01), 569-573 1388-6150 90:2<569 2007 90 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer