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Vol. 29 No. 10 (2017): Vol 29 Issue 10

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Crystal Structure and EPR Studies of Potassium Catena-μ-dichromatodiammine cuprate and Dynamic Behaviour of Cu(II) Doped Potassium Catena-μ-dichlorodiammine-cadmium(II)

https://doi.org/10.14233/ajchem.2017.20677
K. Vijayaraj
Department of Chemistry, Nadar Mahajana Sangam S. Vellaichamy Nadar College, Nagamalai, Madurai-625 019, India
A. Jawahar
Department of Chemistry, Nadar Mahajana Sangam S. Vellaichamy Nadar College, Nagamalai, Madurai-625 019, India
R. Anantharam
Department of Chemistry, Ayya Nadar Janaki Ammal College, Sivakasi-626 123, India
M. Kumara Dhas
Department of Physics, Mahendra Arts and Science College, Kalippatti, Namakkal-637 501, India

Corresponding Author(s) : M. Kumara Dhas

nmdhas@gmail.com

Asian Journal of Chemistry, Vol. 29 No. 10 (2017): Vol 29 Issue 10

Abstract

Single crystals of K2[Cu(NH3)2(CrO4)2] (PCDCU) and copper(II) doped K2[Cd(NH3)2(CrO4)2] (PCDC) have been prepared. K2[Cu(NH3)2(CrO4)2] crystallizes in triclinic modification with P1 symmetry, with one formula unit per unit cell. The units are linked to form a polymeric anionic chain, extending along the a axis. The temperature dependence of the EPR spectra of polycrystalline sample of Cu(II) doped K2[Cd(NH3)2(CrO4)2] has been studied. The fluxional behaviour of the system is interpreted based on the Boltzmann population of the unpaired electron in the three potential valleys. Though K2[Cu(NH3)2(CrO4)2] contains only one CuN2O4 octahedron per unit cell, one more signal with low intensity has been observed in the single crystal EPR spectrum.

Keywords

Electron paramagnetic resonance Dynamic behaviour Potential valleys
Vijayaraj, K., Jawahar, A., Anantharam, R., & Dhas, M. K. (2017). Crystal Structure and EPR Studies of Potassium Catena-μ-dichromatodiammine cuprate and Dynamic Behaviour of Cu(II) Doped Potassium Catena-μ-dichlorodiammine-cadmium(II). Asian Journal of Chemistry, 29(10), 2184–2190. https://doi.org/10.14233/ajchem.2017.20677
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