Oligoorganogermanes: interplay between aryl and trimethylsilyl substituents

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Oligoorganogermanes: interplay between aryl and trimethylsilyl substituents	2 MB	Adobe Acrobat PDF	Read	Download
DOI Доступ к ресурсу на сайте издателя			10.3390/molecules27072147

Title: Oligoorganogermanes: interplay between aryl and trimethylsilyl substituents
Creator: Zaitsev, Kirill V.
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Poleshchuk, Oleg Kh.
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Churakov, Andrei V.
Date: 2022
DOI: 10.3390/molecules27072147
Description: Derivatives of main group elements containing element–element bonds are characterized by unique properties due to -conjugation, which is an attractive subject for investigation. A novel series of digermanes, Ar3Ge-Ge(SiMe3)3, containing aryl (Ar = p-C6H4Me (1), p-C6H4F (2), C6F5 (3)) and trimethylsilyl substituents, was synthesized by the reaction of germyl potassium salt, [(Me3Si)3GeK*THF], with triarylchlorogermanes, Ar3GeCl. The optical and electronic properties of such substituted oligoorganogermanes were investigated spectroscopically by UV/vis absorption spectroscopy and theoretically by DFT calculations. The molecular structures of compounds 1 and 2 were studied by XRD analysis. Conjugation between all structural fragments (Ge-Ge, Ge-Si, Ge-Ar, where Ar is an electron-donating or withdrawing group) was found to affect the properties.