系列Cr(Ⅲ)配合物的晶体结构和表面光电性能

应用化学, 2009, 26(12): 1439-1444. doi: 10.3969/j.issn.1000-0518.2009.12.013

系列Cr(Ⅲ)配合物的晶体结构和表面光电性能

刘懿 ^1, , 牛淑云 ^2, , 金晶 ^3, , 陈亚东 ^4, , 于战 ^5, , 杨光第 ^6,

1.辽宁师范大学化学化工学院,大连,116029

2.辽宁师范大学化学化工学院,大连,116029

3.辽宁师范大学化学化工学院,大连,116029

4.吉林大学化学学院,长春

5.辽宁师范大学化学化工学院,大连,116029

6.吉林大学化学学院,长春

基金项目: 辽宁省教育厅创新团队(2007T092) 国家自然科学基金(20571037和90201018)

关键词： Cr(Ⅲ)配合物 , 晶体结构 , 紫外光谱 , 表面光电压光谱

Crystal Structure and Surface Photovoltage of a Series of Cr(Ⅲ) Coordination Complexes

Keywords： Cr(Ⅲ) coordination complex , crystal structure , UV-Vis spectrum , surface photovoltage spectrum

采用常规方法合成了3种Cr(Ⅲ)配合物:[Cr(en)_2ox][Cr(en)(ox)_a2]·2H_2O(1)、[Co(NH_2NHCSNH_2)_3][Cr(ox)_3]·7H_2O(2)和Cr(acac)_3(3)(en=ethylenediamine,ox=oxalic acid,acac=acetylacetone). 通过X射线单晶衍射、紫外可见吸收光谱(UV-Vis)及表面光电压光谱(SPS)测试技术对配合物进行了表征. 通过SPS光谱对3种配合物的表面光电性能与其相应的UV-Vis吸收光谱进行了对比. 结果表明,配合物在300～600 nm范围内均可呈现较好的光伏响应,而且测得的表面光电压光谱峰位置和紫外吸收光谱有较好的对应关系.

Three Cr(Ⅲ) coordination complexes, [Cr(en)_2ox][Cr(en)(ox)_a2]·2H_2O(1), [Co(NH_2NHCSNH_2)_3][Cr(ox)_3]·7H_2O(2), and Cr(acac)_3(3), were synthesized by the groovy method(en=ethylenediamine, ox=oxalic acid, acac=acetylacetone). The crystal structures of the complexes were determined by X-ray single crystal diffraction, and the complexes were characterized by UV-Vis and surface photovoltage spectrum(SPS). Surface photovoltage performance of the three complexes were emphatically studied, and compared with their UV-Vis spectra. The results of surface photovoltage spectra of complexes 1～3 indicate that the complexes exhibit better surface photovoltage responses in a range of 300~600 nm, and the determined surface photovoltage and the UV-Vis spectra present comparatively well corresponding relation.

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