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Luminescent Bis(amidinate) Indium Complexes
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2024-10-04 , DOI: 10.1021/acs.inorgchem.4c02342
Ramkumar Kannan, Anna Chandrasekar Murali, Krishnan Venkatasubbaiah, Vadapalli Chandrasekhar

Bis-amidinate indium(III) monochlorides [(tBuN)2C(Ph)]2InCl (1), [(tBuN)2C(2-naphthyl)]2InCl (2), [(tBuN)2C(2-anthryl)]2InCl (3), [(tBuN)2C(9-anthryl)]2InCl (4), [(tBuN)2C(9-phenanthryl)]2InCl (5), and [(tBuN)2C(1-pyrene)]2InCl (6) were prepared by the reaction of the corresponding Li-amidinate ligand with InCl3. Single crystal X-ray analysis of compounds 1, 2, 4, and 5 reveals that the In(III) center is bound with two chelating amidinate ligands. The overall coordination geometry around In(III) is distorted trigonal bipyramidal with the chloride occupying one of the equatorial positions. The photophysical properties of these compounds have been analyzed. Compounds 26 are emissive in the solution state. The 9-anthryl substituted compound 4 was found to exhibit a maximum quantum yield of 45.5% in dichloromethane. Compound 3 has a maximum lifetime of 11 ns in solution. Theoretical studies were performed to validate the photophysical properties observed in these compounds.

中文翻译:


发光双(酰胺)铟配合物



双酰胺酸铟(III)一氯化物[(tBuN)2C(Ph)]2InCl (1),[(tBuN)2C(2-萘基)]2InCl (2),[(tBuN)2C(2-anthryl)]2InCl (3),[(tBuN)2C(9-anthryl)]2InCl (4),[(tBuN)2C(9-菲基)]2InCl (5) 和 [(tBuN)2C(1-芘)]2InCl (6) 通过相应的 Li-酰胺配体与 InCl3 反应制备。化合物 1245 的单晶 X 射线分析显示 In(III) 中心与两个螯合酰胺配体结合。围绕 In(III) 的整体配位几何是扭曲的三角双锥体,氯化物占据赤道位置之一。已经分析了这些化合物的光物理性质。化合物 2-6 在溶液状态下是发射的。发现 9-蒽基取代化合物 4 在二氯甲烷中的最大量子产率为 45.5%。化合物 3 在溶液中的最长寿命为 11 ns。进行了理论研究以验证在这些化合物中观察到的光物理特性。
更新日期:2024-10-09
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