Chemistry of the metal carbonyls. Part XXXVIII. Reactions of dicarbonyl-π-cyclopentadienylferrate(–II) with polyfluoroaromatic compounds
- 1 January 1966
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 1837-1842
- https://doi.org/10.1039/j19660001837
Abstract
Reactions between the anion [π-C5H5Fe(CO)2]– and compounds C6F5X (X = F, Cl, Br, or I) have given significant amounts of p-HC6F4·Fe(CO)2(π-C5H5), in addition to the expected C6F5·Fe(CO)2(π-C5H5). With C6F5X (X = CN or CO2Et), para-substitution occurs to yield the compounds p-XC6F4·Fe(CO)2(π-C5H5); with C6F5CN the complex H(CN)C6F3·Fe(CO)2(π-C5H5) is also obtained in small amount. Pentafluorophenylhydrazine reacts with [π-C5H5Fe(CO)2]– to afford p-HC6F4·Fe(CO)2(π-C5H5). With o-C6F4X2(X = CN or CO2Et), substitution occurs in the 4-position to give the complexes X2C6F3·Fe(CO)2(π-C5H5). With o-C6F4(CN)2, the anions Mn(CO)5 – and Re(CO)5 – react similarly to give (NC)2C6F3·M(CO)5(M = Mn or Re). Treatment of o-C6F4I2 with [π-C5H5Fe(CO)2]– affords a mixture of three products, tentatively identified as o-H2C6F3·Fe(CO)2(π-C5H5), o-IC6F4·Fe(CO)2(π-C5H5), and o-HC6F4·Fe(CO)2(π-C5H5).Keywords
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