title: EPR and optical absorption studies of copper ions in diglycine calcium chloride tetrahydrate.
abstract: EPR study of copper ions in diglycine calcium chloride tetrahydrate (DGCCT), [(NH(2)CH(2)COOH)(2).CaCl(2).4H(2)O] single crystals at room temperature is carried out. The spin Hamiltonian parameters of copper ions are determined as: g(x)=2.0238+/-0.0002, g(y)=2.1122+/-0.0002, g(z)=2.2250+/-0.0002, A(x)=(83+/-2)x10(-4)cm(-1), A(y)=(86+/-2)x10(-4)cm(-1) and A(z)=(118+/-2)x10(-4)cm(-1). The optical study of the single crystals at room temperature is also done and the bands are assigned to d-d and charge transfer transitions. Using above data, the nature of bonding in the complex is discussed.
authors.affiliation: Department of Physics, University of Allahabad, Allahabad 211002, India. ram_kripal2001@rediffmail.com
authors.forename: Ram
authors.initials: R
authors.lastname: Kripal
authors.forename: Manisha
authors.initials: M
authors.lastname: Bajpai
mesh_terms: D000042:Absorption; D002122:Calcium Chloride / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D006033:Glycylglycine / Q000737:chemistry*; D007477:Ions; D055620:Optical Phenomena; D013696:Temperature
chemical_list: D007477:Ions; D006033:Glycylglycine; D003300:Copper; D002122:Calcium Chloride