Department of Physics, Kali Charan Nigam Institute of Technology, Banda 210001, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2010 Feb;75(2):830-4. doi: 10.1016/j.saa.2009.12.008. Epub 2009 Dec 6.
Electron paramagnetic resonance (EPR) study of Cu(2+) doped bis (glycinato) Mg (II) monohydrate single crystals is carried out at room temperature. Copper enters the lattice substitutionally and is trapped at two magnetically inequivalent sites. The observed spectra are fitted to a spin-Hamiltonian of rhombic symmetry with the following values of the parameters: Cu(2+) (I), g(x)=2.1577+/-0.0002, g(y)=2.2018+/-0.0002, g(z)=2.3259+/-0.0002, A(x)=(87+/-2)x10(-4)cm(-1), A(y)=(107+/-2)x10(-4)cm(-1), A(z)=(141+/-2)x10(-4)cm(-1); Cu (2+) (II), g(x)=2.1108+/-0.0002, g(y)=2.1622+/-0.0002, g(z)=2.2971+/-0.0002, A(x)=(69+/-2)x10(-4)cm(-1), A(y)=(117+/-2)x10(-4)cm(-1)and A(z)=(134+/-2)x10(-4)cm(-1). The ground state wave function of the Cu(2+) ion in this lattice is evaluated to be predominantly |x(2)-y(2). The g-factor anisotropy is also calculated and compared with the experimental value. With the help of the optical absorption study, the nature of bonding in the complex is discussed.
室温下对 Cu(2+)掺杂双甘氨酸镁(II)一水合物单晶体进行电子顺磁共振(EPR)研究。铜进入晶格取代位置，并被捕获在两个磁不等价的位置。观察到的光谱符合各向异性的自旋哈密顿量，其参数值如下：Cu(2+)（I），g(x)=2.1577+/-0.0002，g(y)=2.2018+/-0.0002，g(z)=2.3259+/-0.0002，A(x)=(87+/-2)x10(-4)cm(-1)，A(y)=(107+/-2)x10(-4)cm(-1)，A(z)=(141+/-2)x10(-4)cm(-1)；Cu(2+)（II），g(x)=2.1108+/-0.0002，g(y)=2.1622+/-0.0002，g(z)=2.2971+/-0.0002，A(x)=(69+/-2)x10(-4)cm(-1)，A(y)=(117+/-2)x10(-4)cm(-1)和 A(z)=(134+/-2)x10(-4)cm(-1)。该晶格中 Cu(2+)离子的基态波函数被评估为主要是 |x(2)-y(2)。还计算了 g 因子各向异性并与实验值进行了比较。借助于光学吸收研究，讨论了配合物中的键合性质。
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