کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1325853 977406 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrochemical and NMR spectroscopic studies of selenium- and tellurium-substituted ferrocenes II: Diferrocenyl chalcogenides, Fc2E, diferrocenyl dichalcogenides, Fc2E2, and bis(ferrocenylchalcogeno)alkanes, FcE(CH2)nE′Fc (E, E′ = Se: n = 1, 2, 3; E, E′ 
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Electrochemical and NMR spectroscopic studies of selenium- and tellurium-substituted ferrocenes II: Diferrocenyl chalcogenides, Fc2E, diferrocenyl dichalcogenides, Fc2E2, and bis(ferrocenylchalcogeno)alkanes, FcE(CH2)nE′Fc (E, E′ = Se: n = 1, 2, 3; E, E′ 
چکیده انگلیسی

1,3-Bis(ferrocenylchalcogeno)propanes, FcE(CH2)3E′Fc (E, E′ = Se, Te), and 1,2-bis(ferrocenylseleno)ethane, FcSe(CH2)2SeFc have been prepared, characterised, and included in a spectroscopic and electrochemical study of a series of compounds containing two ferrocenes linked by a chalcogen-containing bridge. Cyclic and differential pulse voltammetry show that there is electronic communication between the two ferrocene units when the bridge is short (as in Fc2E), but that the interaction rapidly becomes weaker with increasing Fe⋯Fe distance, and is undetectable for the ethane and propane derivatives. 77Se and 125Te NMR spectroscopic measurements reveal that the 77Se chemical shift of Fc2Se2 is anomalously high, which correlates with the long wavelength of its lowest energy electronic absorption.

Cyclic and differential pulse voltammetry of compounds containing two ferrocenes linked by a chalcogen-containing bridge show that there is electronic communication between the two ferrocene units when the bridge is short (as in Fc2E), but that the interaction rapidly becomes weaker with increasing Fe⋯Fe distance, and is undetectable for the 1,3-bis(ferrocenylchalcogeno)propanes.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Organometallic Chemistry - Volume 691, Issue 16, 1 August 2006, Pages 3484–3489
نویسندگان
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