Dynamics of NH₃ ligands and ClO₄⁻ anions in the phase transition in [Cd(NH₃)₆](ClO₄)₂ studied by x-ray powder diffraction, neutron scattering methods and infrared spectroscopy

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• 作者：Łukasz Hetmańczyk^a ; ^b ; ^{hetmancz@chemia.uj.edu.pl} ; Joanna Hetmańczyk^a ; ^b
• 关键词：Hexaamminecadmium perchlorate ; X-ray and neutron powder diffraction ; Quasi-elastic and inelastic neutron scattering ; Infrared absorption band shape analysis
• 刊名：Journal of Physics and Chemistry of Solids
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：101
• 期：Complete
• 页码：34-44
• 全文大小：1892 K
• 卷排序：101

文摘

Phase transition in [Cd(NH3)6](ClO4)2 investigated by a set of complementary methods. XRD and ND diffraction measurements indicate that change of the crystal structure is associated with the phase transition. Anions are disordered in the high temperature phase. Reorientation of ClO4- anions is significantly slowed down in the vicinity of the phase transition. Quasi-elastic neutron scattering revealed that NH3 ligands reorientate fast in the low and high temperature phases.