Abstract
A series of previously unreported tricobalt nonacarbonyl alkylidyne clusters were prepared and further modified with activated alkyl halide functionality in order to produce potential ATRP initiator systems. Their synthesis and spectroscopic properties are discussed, as well as problems encountered during the syntheses. X-ray crystal structures of several of the compounds prepared are reported.
Various alkyne and diyne compounds were also prepared with activated alkyl halide functionality. Dicobalt hexacarbonyl and dicobalt tetracarbonyl 1,1-bis(diphenylphosphino)methane derivatives are prepared and their synthesis, spectroscopic and electrochemical properties reported. Molecular structures of some of these compounds are determined by X-ray crystallography and reported.
A series of known tricobalt nonacarbonyl alkylidyne clusters were reacted with the potentially tridentate ligand triphos [1,1,1-tris(diphenylphosphinomethyl)ethane]. The bridging carbonyl configurations of the derivatives produced are discussed, and their spectroscopic, electrochemical and X-ray crystallographic properties are reported. It is shown that the chemical nature of the capping group may affect the configuration of the cluster carbonyls.
Polymerisation reactions are conducted in the presence of an organometallic structure with activated halide functionality. Various reactions are conducted to determine the viability of the molecules as ATRP initiators. Electrochemistry experiments show the retention of the cluster moiety on polymerization.