32714-96-8Relevant academic research and scientific papers
EVIDENCE FOR ENHANCED REACTIVITY IN THE PHOTOFRAGMENTATION OF THE BRIDGED DINUCLEAR SYSTEM Me2Si5-C5H4Fe(CO)2(η1-CH2C6H5)>2
Nelson, Gregory O.,Wright, Michael E.
, p. 353 - 364 (1982)
Experimental evidence that the dinuclear complex Me2Si5-C5H4Fe(CO)2(η1-CH2C6H5)>2 shows enhanced reactivity over its mononuclear analog η5-C5H5Fe(CO)2(η1-CH2C6H5) in photofragmentation to produce bibenzyl and Fe-Fe bonded product is presented.Information from a series of competition and crossover experiments indicate that two factors are involved in the enhancement: (1) the ability to photochemically produce a 16-electron unsaturated benzyl unit in close proximity to a saturated partner, and (2) the inability of the Fe-Fe bonded species 4 to quench free benzyl radicals in solution.Chemical reaction of Me2Si5-C5H4Fe(CO)2(η1-CH2C6H5)>2 with Me3NO produces bibenzyl and establishes that loss of CO is the initial step in the fragmentation reaction.In addition, trapping experiments with 9,10-dihydroanthracene show that bibenzyl is formed from free benzyl radicals; Based on these results an overall mechanism is proposed.
