Synthesis,structure, and thermodynamics of a lanthanide coordination compound incorporating 5-nitroisophthalic acid |
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| Institution: | 1. Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710069, China;2. College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, China;1. Vinča Institute of Nuclear Sciences, University of Belgrade, PO BOX 522, 11001 Belgrade, Serbia;2. Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, PO Box 3503, 11120 Belgrade, Serbia;1. Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo, Henan Province 454000, China;2. Department of Respiratory, The Affiliated Yixing Hospital of Jiangsu University, Yixing, Jiangsu Province 214200, China;1. Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;2. Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;3. MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, CAGS, Beijing 100037, China;4. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;1. The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;2. School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing 100081, China;1. Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11 001 Belgrade, Serbia;2. 4363 Claremont Way, Livermore, CA 94550, USA;3. Institute of General and Physical Chemistry, Studentski trg 12-16, 11 000 Belgrade, Serbia |
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| Abstract: | A lanthanide coordination compound, Sm3(5-nip)4(5-Hnip)(H2O)7·9H2O]n (5-H2nip = 5-nitroisophthalic acid), has been synthesized and characterized by elemental analysis, IR, TG-DSC, and single-crystal X-ray diffraction. Structural analysis reveals that the compound features two kinds of 1D channels with guest water molecules. TG-DSC curves show that the dehydrated product of the compound exhibits high stability up to 673 K. The enthalpy change of reaction of formation in water, (l), was determined to be (27.608 ± 0.133) kJ · mol−1 at (298.15 ± 0.01) K by microcalorimetry. Based on a designed thermochemical cycle and other auxiliary thermodynamic data, the enthalpy change of reaction of formation in solid at (298.15 ± 0.01) K and the standard molar enthalpy for the compound, (s) and , were calculated to be (96.8 ± 0.8) kJ · mol−1 and (−831.4 ± 16.0) kJ · mol−1, respectively. In addition, thermodynamics and thermokinetics of the reaction of formation of the compound were investigated in water. |
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