Interpretation of the Electron Paramagnetic Resonance Spectra of Copper(II)–Tyrosine Complex
Interpretation of the Electron Paramagnetic Resonance Spectra of Copper(II)–Tyrosine Complex
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铜(II)-酪氨酸配合物电子顺磁共振谱的解释
DOI:
10.1515/zna-2017-0239
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发表时间:
2017-12
期刊:
影响因子:
--
通讯作者:
匡泯泉
中科院分区:
文献类型:
--
作者:
徐小慧;匡泯泉
Abstract The electron paramagnetic resonance (EPR) spectra of [Cu(l-tyrosine)2]n (CuA) were interpreted based on the fourth-order perturbation treatments where the contributions due to the local distortion, ligand orbit and spin-orbit coupling were included. The calculated band transitions dx2−y2${{\text{d}}_{{{\text{x}}^2} - {{\text{y}}^2}}}$ to dxy (≈16412 cm−1) and dz2${{\text{d}}_{{{\text{z}}^2}}}$ (≈14845 cm−1) agree well with the band analysis results (dx2−y2→dxy${\text{(}}{{\text{d}}_{{{\text{x}}^2} - {{\text{y}}^2}}} \to {{\text{d}}_{{\text{xy}}}}$≈16410 and dx2−y2→dz2${{\text{d}}_{{{\text{x}}^2} - {{\text{y}}^2}}} \to {{\text{d}}_{{{\text{z}}^2}}}$≈14850 cm−1). The unresolved separations dx2−y2→dxz${{\text{d}}_{{{\text{x}}^2} - {{\text{y}}^2}}} \to {{\text{d}}_{{\text{xz}}}}$ and dx2−y2→dyz${{\text{d}}_{{{\text{x}}^2} - {{\text{y}}^2}}} \to {{\text{d}}_{{\text{yz}}}}$ in the absorption spectra were evaluated as 26283 and 26262 cm−1, respectively. For CuA, copper chromophores in 1,3-diaminorpropane isophtalate copper(II) complex (CuB) and N-methyl-1,2-diaminoetaane-bis copper(II) polymer (CuC), the transition dx2−y2→dxy${{\text{d}}_{{{\text{x}}^2} - {{\text{y}}^2}}} \to {{\text{d}}_{{\text{xy}}}}$ (=E1≈10Dq) suffered an increase with a decrease in R̅L which was evaluated as the mean value of the copper-ligand bond lengths. The correlations between the tetragonal elongation ratio ρ (=(Rz–R̅L)/R̅L) (or the ratio G=(gz–ge)/((gx+gy)/2–ge)) and the g isotropy gav (=(gx+gy+gz)/3) (or the covalency factor N) for CuA, CuB and CuC were acquired and all the results were discussed.
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影响因子:
2.7
作者:
M. Kuang;Hongkuan Yuan;Hong Chen;Li-Dan Wang;S. Duan
通讯作者:
M. Kuang;Hongkuan Yuan;Hong Chen;Li-Dan Wang;S. Duan
影响因子:
4
作者:
Zhang Hua-ming;W. Shao-Yi;Kuang Min-Quan;Zhang Zhi-hong
通讯作者:
Zhang Hua-ming;W. Shao-Yi;Kuang Min-Quan;Zhang Zhi-hong
DOI:
10.1007/978-0-387-39940-9_3308
发表时间:
2020-02
期刊:
--
影响因子:
--
作者:
S. Keller
通讯作者:
S. Keller
影响因子:
12.6
作者:
郑絮月;姚天明;朱影;石硕
通讯作者:
石硕
影响因子:
0.7
作者:
Y. Cheng;S. Wu;C. Ding;G. L. Li;M. Kuang
通讯作者:
Y. Cheng;S. Wu;C. Ding;G. L. Li;M. Kuang