Mechanochemical and thermal phase transition of bis(n-cyclohexylsalicylideneaminato) copper(II) |
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| Affiliation: | 1. College of Laboratory Medicine, Zhang Jiakou Key Laboratory of Organic Light Functional Materials, Hebei Key Laboratory of Neuropharmacology and Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, Hebei North University, Zhangjiakou, 075000, Hebei Province, People’s Republic of China;2. Zhangjiakou No. 1 Middle School, Zhangjiakou, 075000, Hebei Province, People’s Republic of China;1. Departamento de Física, Universidade Federal do Ceará, C. P. 6030, CEP 60455-900 Fortaleza, CE, Brazil;2. Faculdade de Educação Ciências e Letras do Sertão Central, Universidade Estadual do Ceará, CEP 63.902–098 Quixadá, CE, Brazil;3. Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, CEP 66075-110 – Belém-PA, Brazil;4. Universidade Federal do Cariri, CEP 63000-000 Juazeiro do Norte, CE, Brazil;5. Elettra Sincrotrone Trieste, S.S. 14 km 163.5, Area Science Park, 34149 Basovizza, Trieste, Italy;1. Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, 60740-000 Belém, PA, Brazil;2. Instituto Federal de Educação, Ciência e Tecnologia do Pará, 67125-000 Ananindeua, PA, Brazil;3. Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970 Campinas, SP, Brazil;4. Centro de Ciências Sociais, Saúde e Tecnologia, Universidade Federal do Maranhão, 65900-410 Imperatriz, MA, Brazil |
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| Abstract: | The mechanochemical and thermal properties of bis(N-cyclohexylsalicylideneaminato)copper(II) were investigated by means of DSC and X-ray diffractometry. The triclinic crystals (brown) of the complex were found to transform into monoclinic crystals (green) at 163°C with ΔH = 13.3 ± 0.3 kJ/mol. On pulverization at room temperature, the monoclinic green crystals were converted into the triclinic form; the accumulated strain in the green crystals being presumed to cause such a mechanochemical polymorphic transition. |
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