Transition metal complexes with heterocyclic analogs of fluorene - 1. Synthesis, structures, and haptotropic rearrangements of tricarbonylchromium complexes of dibenzothiopheneстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The complex formation of dibenzothiophene with chromium carbonyl complexes of the general formula L3Cr(CO)(3) (L = Py, NH3, or CO) afforded eta(6)-C12H8Cr(CO)(3) (1). In the presence of tetramethylethylenediamine, complex I was selectively metallated with BuLi at position 4 of the coordinated ring to form eta(6)-4-LiC12H8SCr(CO)(3) (2). In decane, the tricarbonylchromium group is reversibly and intramolecularly migrates from the unsubstituted to Substituted ring due to the inter-ring haptotropic rearrangement (IRHR) at 130degreesC for 100 h. In decane, the rate constant of IRHR was estimated experimentally by H-1 NMR spectroscopy and theoretically by the density functional theory (DFT).