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ESR and optical study of Cu2+-doped bis-(5,5′-diethylbarbiturato)bis picoline Zn(II)

Kripal, Ram and Misra, Sanjay and Mishra, Indrajeet (2011) ESR and optical study of Cu2+-doped bis-(5,5′-diethylbarbiturato)bis picoline Zn(II). An International Journal at the Interface Between Chemistry and Physics, 109 (2). pp. 234-249.

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Abstract

ESR studies were conducted on Cu2+-doped bis-(5,5′-diethylbarbiturato)bis picoline Zn(II). Two Cu2+ lattice sites, Cu2+(I) and Cu2+(II), were identified. These sites exhibit two sets of four hyperfine lines in all directions. The g factor and hyperfine splitting were calculated from ESR absorption spectra: gx = 2.0201 ± 0.002, gy = 2.0900 ± 0.002, gz = 2.1634 ± 0.002, Ax = (30 ± 2) × 10−4 cm−1, Ay = (40 ± 2) × 10−4 cm−1 and Az = (154 ± 2) × 10−4 cm−1. It was found that Cu2+ enters the lattice substitutionally. The ground-state wavefunction of the Cu2+ ion in this lattice was determined from the spin Hamiltonian constants obtained from the ESR studies. With the help of an optical absorption study, the nature of the bonding in the complex is also discussed.

Item Type: Article
Uncontrolled Keywords: • ESR, • spin Hamiltonian, • absorption, • angular variation, • rhombic symmetry
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Q Science > QA Mathematics > QA76 Computer software
Divisions: Faculty of Engineering, Science and Mathematics > School of Electronics and Computer Science
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 27 Mar 2014 01:36
Last Modified: 27 Mar 2014 01:36
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/2288

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