| The current study addresses oxidative addition reactions of heterocyclic arylsilanes such as silafluorene with (PhP3)2Pt(η 2-C2H4) 1 and how manipulation of the silafluorene structure by addition of substituents to the benzo-groups can lead to monomers, dimers and trimers. Three related silafluorenes were studied: 9-silafluorene 2, 3,6-di-tert-butyl-9-silafluorene 3, and 3,6-dimethyl-9-silafluorene 4.; Additional studies were conducted including: deuterium labeling involving 2-d2 and changing the solvent used in the reaction. The unsymmetrical dimer, 16-d2, was further characterized via 2H NMR.; Research on the types of oxidative addition products formed from the reaction of silafluorenes 2, 3 and 4 with the Pt(0) precursor 1 were found to support the hypothesis that less bulk on the hydrosilane (2) led to oxidative addition products with higher nuclearity (trimer, 17), while the bulkier hydrosilanes 3 and 4 produced only monomers and dimers. (Abstract shortened by UMI.)... |
