A study of the reaction between phenyl substituted cyclopentadiene and iron pentacarbonyl: the unusual structure of #pi#-complex (#eta#~4-C_5Ph_4H_2)Fe(CO)_3

摘要

The reaction of a series of phenyl substituted cyclopentadienes C_5Ph_nH_(6-n) (n = 1-4) and iron pentacarbonyls in refluxing toluene was studied. The corresponding diiron complexes [(#eta#~5-C_5Ph_nH_(6-n))Fe(CO)]_2(#mu#-CO)_2 (n = 1-4) and phenyl substituted ferrocenes (#eta#~5-C_5Ph_nH_(6-n)_2Fe (n = 3,4) were obtained. The reaction of tetraphenulcyclopentadiene and iron pentacarbonyl in refluxing toluene also led to the formation of #pi#-complex (#eta#~4-C_5Ph_4H_2)Fe(CO)_3 (1), which xhibited exceptional air and thermal stabilities. The molecular structure of 1 has been determined by X-ray diffraction and an unusual rearrangement of a phenyl group was found.