The Tetracyanopyridinide Dimer Dianion, σ‐[TCNPy]
<sub>2</sub>
<sup>2−</sup>
作者:Jingjun Hao、Arnold L. Rheingold、Marzieh Kavand、Kipp J. van Schooten、Christoph Boehme、Marçal Capdevila‐Cortada、Juan J. Novoa、Eva Wöss、Günther Knör、Joel S. Miller
DOI:10.1002/chem.201603071
日期:2016.8.22
diamagnetic σ‐[TCNPy]22− possessing a 1.572(3) Å intrafragment sp3–sp3 bond. This is in contrast to the structurally related 1,2,4,5‐tetracyanobenzene and 1,2,4,5‐tetracyanopyrazine that form π‐dimer dianions possessing long, multicenter bonds.
2,3,5,6-四氰基吡啶(TCNPy)与Cr(C 6 H 6)2的反应形成具有1.572(3)Å内片段sp 3 –sp 3键的抗磁性σ-[TCNPy] 2 2-。这与结构上相关的1,2,4,5-四氰基苯和1,2,4,5-四氰基吡嗪形成具有长的,多中心键的π二聚体二聚体相反。