Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10574009 | Journal of Inorganic Biochemistry | 2005 | 5 Pages |
Abstract
Simple MO arguments provide a qualitative explanation for the near-linear ON-Mn-NO arrangement observed for the trans-{Mn(NO)2}8 anion [Mn(Pc)(NO)2]â, which is unexpected for an Enemark-Feltham electron count n > 6. The metal center in this species may be described as low-spin d6(“t2g6”) and the two unpaired electrons occupy a pair of eu orbitals composed of NO(Ï*) components, giving rise to a triplet ground state. In a certain sense, these eu SOMOs may be likened to the SOMO (singly occupied molecular orbital) of the allyl radical. The electronic structure of this species is quite different from that of diamagnetic dinitrosylheme intermediates, which have been spectroscopically characterized in synthetic studies as well as proposed for soluble guanylate cyclase and cytochrome câ². Some speculative remarks are offered as to why this proposal is not an unreasonable one from an electronic-structural perspective.
Related Topics
Physical Sciences and Engineering
Chemistry
Inorganic Chemistry
Authors
Espen Tangen, Jeanet Conradie, Anders Svadberg, Abhik Ghosh,