Gd3+ Complexes as Potential Spin Labels for High Field Pulsed EPR Distance Measurements

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• 作者：Arnold M. Raitsimring ; Chidambaram Gunanathan ; Alexey Potapov ; Irena Efremenko ; Jan M. L. Martin ; David Milstein ; Daniella Goldfarb
• 刊名：Journal of the American Chemical Society
• 出版年：2007
• 出版时间：November 21, 2007
• 年：2007
• 卷：129
• 期：46
• 页码：14138 - 14139
• 全文大小：74K
• 年卷期：v.129,no.46(November 21, 2007)
• ISSN：1520-5126

文摘

Pulse electron-electron double resonance distance measurements between two high spin Gd³⁺ ions in a novel bis-Gd³⁺ complex involving two pyridine-based gadolinium tetracarboxylate systems linked by a rigid aryl-alkyne unit were carried out at Ka- and W-band frequencies. The experimental distance found was 2.02 ± 0.02 nm, and it was further compared with the Gd³⁺-Gd³⁺ distance (2.2126 nm) determined by density functional theory.