Locally resolved 13C hyperfine shifts in (DMe-DCNQI)2-M radical anion salts: A comparative study
作者： M. Helmle , J. Reiner , U. Rempel , M. Mehring , J.U. von Schütz
DOI: 10.1016/0379-6779(91)91948-A
关键词: Crystal structure 、 Ring (chemistry) 、 Chemistry 、 Stereochemistry 、 Ion 、 Hyperfine structure 、 Copper 、 Spin probe 、 Crystallography 、 Carbon 、 Metal ions in aqueous solution
摘要: Abstract 13 C was used as a spin probe to investigate both the metal-cyano complex and quinoid ring system in variety of conducting DCNQI salts. By shift correlation analysis different carbon positions it possible establish common trend systems with metal ions. The observed Knight shifts were determine local electronic susceptibility for DMe-DCNQI For Cu-salt this led decomposition known total into contributions assigned stack copper ions, respectively. This allowed us degree charge transfer. Two cyano resonances contrary temperature dependences case (DMe-DCNQI) 2 Na. Considering crystal structure, these two could be non-equivalent stacks.
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