title: Single crystal EPR of Cu(II) doped [Co(tbz)2(NO3)(H2O)]NO3: probe into copper-thiabendazole interaction.
abstract: EPR of Cu(II) doped, low symmetry Co(II)-thiabendazole complex [Co(tbz)2(NO3)(H2O)](NO3) is investigated at 300 K. The spin Hamiltonian parameters are found to be orthorhombic with g33=2.305, g22=2.1351, g11=2.0626 and A33=147.0 x 10(-4), A22=33.5 x 10(-4) and A11=23.1 x 10(-4) cm(-1). Computer simulation of isofrequency plots reveal that the Cu(II) ions is substitutionally incorporated in the host lattice. Angular variation of the spectra shows the presence of two magnetic sites in the lattice. The low magnitude of A33 of the complex is rationalized in terms of admixture of d(x2-y2)/d(z2) ground state and delocalization of unpaired spin density onto the ligands.
authors: Department of Chemistry, Saraswathi Narayanan College, Madurai, Tamil Nadu, India.
authors: K K
authors: KK
authors: Mothilal
authors: Chandran
authors: C
authors: Karunakaran
authors: P
authors: P
authors: Sambasiva Rao
authors: Ramachandran
authors: R
authors: Murugesan
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D008958:Models, Molecular; D009566:Nitrates / Q000737:chemistry*; D013057:Spectrum Analysis; D013827:Thiabendazole / Q000737:chemistry*
chemical_list: D009566:Nitrates; D003035:Cobalt; D003300:Copper; D013827:Thiabendazole