title: Low temperature heat capacity, standard entropy, standard enthalpy and magnetic property: a new 1D CuIIcoordination polymer incorporating tetrazole-1-acetic acid and p-nitrobenzoic acid.
abstract: A new 1D CuIIcoordination polymer, formulated as {[Cu(TZA)(PNA)]·H2O}n(1) (HTZA = tetrazole-1-acetic acid, HPNA = p-nitrobenzoic acid), was synthesized and structurally characterized. Thermogravimetric analysis demonstrated that the main frame of 1 exhibited good thermostability up to 473 K. The non-isothermal kinetics for the first exothermic process of 1 were studied by Kissinger and Ozawa methods. The magnetic study revealed that 1 possessed antiferromagnetic exchange interactions between CuIIions through the carboxyl-bridge. The low-temperature (1.9 to 300 K) heat capacity of 1 was measured using the heat-capacity option of a Quantum Design Physical Property Measurement System (PPMS). In addition, the thermodynamic functions in the experimental temperature range were derived by fitting the heat-capacity data to a series of theoretical and empirical models. The standard entropy and standard enthalpy of 1 were respectively calculated to be 411.37 ± 4.11 J mol-1K-1and 60.21 ± 0.60 kJ mol-1.
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710127, P.R. China. yangqi@nwu.edu.cn sanpingchen@126.com.
authors.forename: Qi
authors.identifier: http://orcid.org/0000-0001-9603-3090
authors.initials: Q
authors.lastname: Yang
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710127, P.R. China. yangqi@nwu.edu.cn sanpingchen@126.com.
authors.forename: Jing
authors.initials: J
authors.lastname: Ge
authors.affiliation: Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P.R. China.
authors.forename: Xin
authors.initials: X
authors.lastname: Liu
authors.affiliation: Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P.R. China.
authors.forename: Quan
authors.initials: Q
authors.lastname: Shi
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710127, P.R. China. yangqi@nwu.edu.cn sanpingchen@126.com.
authors.forename: Hongshan
authors.initials: H
authors.lastname: Ke
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710127, P.R. China. yangqi@nwu.edu.cn sanpingchen@126.com.
authors.forename: Qing
authors.initials: Q
authors.lastname: Wei
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710127, P.R. China. yangqi@nwu.edu.cn sanpingchen@126.com.
authors.forename: Gang
authors.initials: G
authors.lastname: Xie
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710127, P.R. China. yangqi@nwu.edu.cn sanpingchen@126.com.
authors.forename: Sanping
authors.identifier: http://orcid.org/0000-0002-6851-7386
authors.initials: S
authors.lastname: Chen
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710127, P.R. China. yangqi@nwu.edu.cn sanpingchen@126.com.
authors.forename: Shengli
authors.initials: S
authors.lastname: Gao