The reactions of cycloheptacyclopropenone and diphenylcyclopropenone with nickel carbonyl under anhydrous conditions have been investigated and structures deduced for the resulting products.
Organic chemistry of subvalent transition metal complexes
作者:John J. Eisch、James.E. Galle、Allen A. Aradi、Marek P. Bolesa̵wski
DOI:10.1016/0022-328x(86)80327-8
日期:1986.10
and heat displays the properties of a nickelole, rather than a cyclobutadienenickel(0) complex. Attempts to generate IIIb photochemically from η4-1,5-cyclooctadiene(η4-tetraphenylcyclopentadienone)nickel and diphos failed, but it was shown that structural types, such as η4-tetraphenyl-cyclopentadienone(diphos)nickel (a model for the structure suggested by Hoberg and Richter for IIIb), are unstable.
Reductive substitution of nickelocene; interception of a monohydrido intermediate in the hydrogenation of 2,3,4,5-tetraphenylcyclopentadienone (tetracyclone)
Reductive substitution1 of nickelocene with tetracyclone affords bis(tetracyclone)nickel(0) (1), η3-1,2,3,4-tetraphenyl-5-ketocyclopentenylcyclopentadienylnickel (2) and trans-1,2,3,4-tetraphenylcyclopenten-1-one-5 (3); evidence is presented that 2 is an intermediate in the formation of 3 from 1.