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Syntheses, Properties, and X-ray Crystal Structures of Piano-Stool Iron Complexes Bearing an N-Heterocyclic Carbene Ligand
Piano-stool iron complexes containing the C−C unsaturated IMes or saturated H2-IMes ligand are readily synthesized from [CpFe(CO)2(I)]. Substitution of the iodide ligand affords the cationic species [CpFe(CO)2(L)][[I] (1a + I -) and (1b + I -) (a, L = IMes, b, L = H2-IMes), subsequent decarbonylatio...
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Published in: | Organometallics 2003-11, Vol.22 (24), p.5144-5147 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Piano-stool iron complexes containing the C−C unsaturated IMes or saturated H2-IMes ligand are readily synthesized from [CpFe(CO)2(I)]. Substitution of the iodide ligand affords the cationic species [CpFe(CO)2(L)][[I] (1a + I -) and (1b + I -) (a, L = IMes, b, L = H2-IMes), subsequent decarbonylation of which yields the neutral iodo derivatives 2a,b. Cyclic voltammetry studies of 2a,b show a reversible one-electron oxidation to the corresponding 17-electron radical cation. The mono(acetonitrile) complexes 3a,b are obtained from UV irradiation of 1a,b + PF 6 - in CH3CN, but displacement of the second CO ligand is inhibited by strong metal−CO π-back-donation. |
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ISSN: | 0276-7333 1520-6041 |
DOI: | 10.1021/om034056o |