名称:
Organoiron Selenium Complexes. Synthesis and Characterization oftert-Butyl Substituted Cyclopentadienyldicarbonylselenocarboxylate Iron Complexes, Cp′Fe(CO)2SeCOR (Cp′ = C5H5,t-BuC5H4, 1,3-t-Bu2C5H3)
摘要:
The organoiron selenides [(C5H5)Fe(CO)(2)]2(mu-Se) (I), [(t-BuC(5)H(4))Fe(CO)(2)](2)(mu-Se-2) (II), and [(1,3-t-Bu(2)C(5)H(3))Fe(CO)(2)](2)(mu-Se-2) (III) were prepared from the reaction of the organoiron dimers [(C5H5)Fe(CO)(2)](2), [(t-BuC(5)H(4))Fe(CO)(2)](2) and [(1,3-t-Bu(2)C(5)H(3))Fe(CO)(2)](2) with elemental selenium. The above selenides (I), (II) and (III) react with acid chlorides, RCOCl to give the Se-bonded monoselenocarboxylate derivatives [Cp'Fe(CO)(2)SeCOR] (Cp' = C5H5, t-BuC(5)H(4), 1,3-t-Bu(2)C(5)H(3); R = 4-O2NC6H4, 3,5-(O2N)(2)C6H3) The presence of tert-butyl substituents on the cyclopentadienyl ring introduces significant changes in the properties of these systems relative to the unsubstituted cyclopentadienyl analogues.