Abstract
Isomer is sometimes fundamental to the formation of the resulting compounds. The design and preparation of coordination compounds based on isomers is of tremendous paramount since they have a lot in common but simultaneously some difference, which can lead to variation of both the topologies and properties. Solvothermal reactions of Hn-pytza (n = 3, 4) with Co(ClO4)2·6H2O, afforded two interesting coordination polymers, one dimensional [Co(3-pytza)2(H2O)2]n·2nH2O (1) and three dimensional [Co(4-pytza)2]n (2), where Hn-pytza = 5-(n-pyridyl)tetrazole-2-acetic acid (n = 3, 4). The thermal decomposition behavior of the two compounds were characterized by the differential scanning calorimetry (DSC) and thermogravimetric-differential thermogravimetric (TG-DTG), showing [Co(4-pytza)2]n is superior to [Co(3-pytza)2(H2O)2]n·2nH2O in terms of energetic performance. Furthermore, the entropy of activation (∆S), enthalpy of activation (∆H), and free energy of activation (∆G) were calculated, as well.
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The authors acknowledge financial support from the Natural Science Foundation of Jiangsu Province (Grant No. BK2012210), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 10KJB430001) and the Opening Fund of Jiangsu Key Laboratory of Advanced Functional Materials (Grant No. 12KFJJ010).
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Zhu, D.L., Yue, Q.Y., Wang, J. et al. Two Energetic Cobalt(II) Coordination Polymers Derived from Isomeric Ligands. J Inorg Organomet Polym 26, 616–622 (2016). https://doi.org/10.1007/s10904-016-0343-5
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DOI: https://doi.org/10.1007/s10904-016-0343-5