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Vol. 25 No. 9 (2013): Vol 25 Issue 9

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Structural Investigation of Cu(II) in Alkaline Salt of Bis(malonato)zincate(II) Anion Using Single Crystal EPR Technique

https://doi.org/10.14233/ajchem.2013.14104
P. Geetha
Sri Chandrasekharendra Saraswati Viswa Mahavidyalaya, Kanchipuram-631 561, India
K. Parthipan
Department of Chemistry, Pondicherry University, Puducherry-605 014, India ; AM Jain College, Meena mpakkam, Chennai-600 114, India
P. Sathya
Department of Chemistry, Pondicherry University, Puducherry-605 014, India
S. Balaji
Sri Chandra sekharendra Saraswati Viswa Mahavidyalaya, Kanchipuram-631 561, India

Corresponding Author(s) : P. Geetha

prabhakaran.geetha@yahoo.com; kanchiuniv.chem@gmail.com

Asian Journal of Chemistry, Vol. 25 No. 9 (2013): Vol 25 Issue 9

Abstract

Electron paramagnetic resonance and optical absorption spectra of Cu(II) ion doped diaquacesiumaquabismalonatozincate have been carried out at room temperature using X band spectrometer to get information about the location of impurity and assigned structural properties. Single crystal rotated along the three crystal planes (a*c*, bc*, ab) suggesting the presence of single site copper impurity present in the lattice. The observed spectra have been fitted to spin Hamiltonian of rhombic symmetry with gxx = 2.1694, gyy = 2.137, gzz = 2.3304; Axx = 3.75, Ayy = 6.79 and Azz = 12.76 mT, respectively. From the direction cosines of principal g and A values propose that the copper present in the lattice interstitially in the host lattice. The analysis of powder spectrum also confirms the presence of only one site. Angular variation plots and power EPR spectrum have also been simulated. Optical, FTIR and powder XRD techniques have been used to confirm the structure of the host lattice in presence of dopant.

Keywords

EPR Hyperfine Spin hamiltonian Crystal lattice Admixture coefficient Interstitial
Geetha, P., Parthipan, K., Sathya, P., & Balaji, S. (2013). Structural Investigation of Cu(II) in Alkaline Salt of Bis(malonato)zincate(II) Anion Using Single Crystal EPR Technique. Asian Journal of Chemistry, 25(9), 4791–4796. https://doi.org/10.14233/ajchem.2013.14104
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