Self‐Assembly of a Tetranuclear Co
<sup>III</sup>
‐Metallacycle from the Reaction of a Bis(benzene‐
<i>o</i>
‐dithiolato) Ligand with Co
<sup>II</sup>
and Subsequent Aerial Oxidation
作者:F. Ekkehardt Hahn、Thorsten Kreickmann、Tania Pape
DOI:10.1002/ejic.200500862
日期:2006.2
AbstractThe bis(benzene‐o‐dithiol) ligand [(HS)2‐2,3‐C6H3–CH2–C6H3‐2,3‐(SH)2] (H4‐1) reacts, after deprotonation with Li2CO3, with CoCl2·6H2O. Aerial oxidation in methanol gives the tetranuclear metallacycle Li4[Co4(1)4]. The X‐ray structure analysis of (PNP)4[Co4(1)4] (7) reveals a cyclic structure in which each of the bis(benzene‐o‐dithiolato) ligands forms a bridge between two cobalt centers. Two differently coordinated cobalt atoms (synandanti) are observed in the tetranuclear complex. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)