Raman study of the incommensurate layer crystal (CH3CH2CH2NH3)2MnCl4 (=PAMnC) from 10 to 300 K

Article Article scientifique Article Raman study of the incommensurate layer crystal (CH3CH2CH2NH3)2MnCl4 (=PAMnC) from 10 to 300 K eng 1991 author Lucken Anne Marie Claude 27056 author Hagemann Hans-Rudolf 26435 author Bill Hans 24827 5085-5097 10.1088/0953-8984/3/27/001 0953-8984 The temperature dependent Raman spectra of the title compound confirm the presence of some rotational disorder of the NH3 end groups below 112 K. The central carbon-carbon stretching mode around 865 cm-1 is coupled to the order parameter of the incommensurate phase transition at 168 K. No other clear evidence of the incommensurate modulation appears in the Raman spectra between 112 and 168 K. In the Abma phase (above 168 K) a dynamic conformational gauche-trans equilibrium is observed. The corresponding enthalpy difference is estimated to be 18.4+or-6.5 kJ mol-1. Dewey 540 38 Département de chimie physique 142 false 684 Groupe Bill Journal of physics. Condensed matter 3 27 eb65dae3-5eff-4f98-84b4-77e6dda730fd Article (Published version) Restricted A_Lucken_1991_J._Phys.__Condens._Ma.pdf 554265 application/pdf 3b52dec693446809fff1d41565f71f3366766fe33154f71d4aac20852cb2a489 restrictedAccess Faculté des sciences / Section de chimie et biochimie / Département de chimie physique

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Raman study of the incommensurate layer crystal (CH₃CH₂CH₂NH₃)₂MnCl₄ (=PAMnC) from 10 to 300 K	Journal of physics. Condensed matter			1991	758	0

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Lucken, Anne Marie Claude