Cyclopropenylidene approach to tricarbide complexes. Synthesis and structure of [Fe(CO){sub 2}(Cp)][{sub 3}({mu}{sub 3}-C{sub 3})][SbF{sub 6}]
- Univ. of Kentucky, Lexington, KY (United States)
We are interested in preparing metal complexes of small C{sub x} ligands. We report here the first trimetallic complex of cyclo-C{sub 3}. The reaction of 3 equiv of cyclopentadienyldicarbonyliron anion with [C{sub 3}Cl{sub 3}][SbF{sub 6}], generated from C{sub 3}Cl{sub 4} and AgSbF{sub 6}, produces trimetallic [[Fe(CO){sub 2}(Cp)]{sub 3}({mu}{sub 3}-C{sub 3})]{sub 6} (1, eq 1) in about 65% yield. The average Fe-C{sub ring} bond length in 1, 1.92 A, falls near the middle of the range of Fe-C bonds with multiple-bond character. Compared to neutral [Fe(R)(CO){sub 2}(Cp)] compounds, the Fe-C bonds in 1 are shorter than typical Fe-C{sub sp3} or Fe-C{sub sp2} single bonds (2.0-2.1 A) but about the same length as Fe-C{sub sp} bonds (1.9 A). Spectroscopic properties of 1 are in accord with the solid-state structure. 34 refs., 1 fig.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG05-85ER13432; FG02-91ER75657
- OSTI ID:
- 81695
- Journal Information:
- Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 26 Vol. 117; ISSN JACSAT; ISSN 0002-7863
- Country of Publication:
- United States
- Language:
- English
Similar Records
The series of carbon-chain complexes {Ru(dppe)Cp*}₂{μ-(C≡C)x} (x = 4–8, 11): Synthesis, structures, properties and some reactions
Dimerization and ring-opening in bis(diisopropylamino)cyclopropenylidene (BAC) mediated by [U(NR2)3(CCPh)] (R = SiMe3)