| RAMAN STUDIES OF STRUCTURAL PHASE TRANSITION IN[n-C_(11)H_(28)NH_8]_2ZnCl_4 |
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| 作者单位： | Ning GUO Guang Fu ZENG Shi Quan XI Changchun Institute of Applied Chemistry，Academia Sinica.Changchun 130022 |
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| 摘 要： | The perovskite type of compound n-C_(11)H_(23)N_3]_2ZnCl_4(abr.C_(11)Zn)exhibits two solid-solid phasetransitions at T_(c1)=298.7 K and T_(c2)=360.1 K.A temperature dependence study of Raman spectra of C_(11)Znprovides the evidence of occurence of the structural phase transition related to the dynamics of thealkylammonium ions.The room temperature phase is ordered and contains the all-trans alkyl chains.Theintermediate temperature phase presents a partial conformational disorder and liquidlike state of allconformational disorder occurs at high-temperature phase.
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RAMAN STUDIES OF STRUCTURAL PHASE TRANSITION IN[n-C_(11)H_(28)NH_8]_2ZnCl_4 |
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| Authors: | Ning GUO Guang Fu ZENG Shi Quan XI Changchun Institute of Applied Chemistry Academia SinicaChangchun |
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| Institution: | Ning GUO Guang Fu ZENG Shi Quan XI Changchun Institute of Applied Chemistry,Academia Sinica.Changchun 130022 |
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| Abstract: | The perovskite type of compound n-C_(11)H_(23)N_3]_2ZnCl_4(abr.C_(11)Zn)exhibits two solid-solid phase transitions at T_(c1)=298.7 K and T_(c2)=360.1 K.A temperature dependence study of Raman spectra of C_(11)Zn provides the evidence of occurence of the structural phase transition related to the dynamics of the alkylammonium ions.The room temperature phase is ordered and contains the all-trans alkyl chains.The intermediate temperature phase presents a partial conformational disorder and liquidlike state of all conformational disorder occurs at high-temperature phase. |
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| Keywords: | Raman spectrosocopy molecular conformation phase transition bis(n-undecylammonium)tetrachlorozincate |
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