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Title: High pressure Raman spectroscopic studies of (p−chloroanilinium){sub 2}CuCl{sub 4}

(p−chloroanilinium){sub 2}CuCl{sub 4} has a corner shared layered structure of CuCl6{sup 4−} octahedra with p-chloroanilinium cation sandwiched between the layers. The CuCl{sub 6} octahedra are irregular due to Jahn-Teller distortion. We report our high pressure Raman results on this compound in the present manuscript. Our results indicate significant changes in Raman spectra at ∼ 3 GPa and ∼ 8 GPa. The changes at 3 GPa can be attributed to a reduction in puckering of the CuCl{sub 4}{sup 2−} layer and the transition at 8 GPa, which also leads to a colour change of this sample to deep red, could be due to delocalization of the eg electrons along with a reduction of the cooperative Jahn-Teller distortion in this layer. These changes were found to be reversible.
Authors:
 [1] ; ;  [2] ; ;  [3]
  1. School of Engineering and Technology, Navrachana University, Vadodara- 391 410 (India)
  2. High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Center, Mumbai-400 085 (India)
  3. Department of Chemistry, The Maharaja Sayajirao Gaikawad University of Baroda, Vadodara - 390 001, Gujarat (India)
Publication Date:
OSTI Identifier:
22269373
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CATIONS; COPPER CHLORIDES; JAHN-TELLER EFFECT; LAYERS; PRESSURE RANGE MEGA PA 10-100; RAMAN SPECTRA