A proton and carbon-13 nuclear magnetic resonance study of neopentylmercury compounds |
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Authors: | Gurdial Singh G.S. Reddy |
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Affiliation: | Central Research Department1, Experimental Station, E.I. du Pont de Nemours and Company, Wilmington, Delaware 19898 U.S.A. 0033 2 |
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Abstract: | Substituent effects on 199Hg1H and 199Hg13C spinspin coupling constants have been studied for neopentylmercury derivatives, (CH3)3CCH2HgR(or X), where R is covalently bonded Me, Et, t-Bu, neopentyl, and vinyl, and X is easily ionizable CN, Br, Cl, OCOCH3, and ONO2. Linear relationships exist between the methylene J(13CH) and 2J(HgH), 4J(HgC) and 2J(HgC) and 3J(HgC); but deviations from linearity occur for the chloride, bromide, acetate, and nitrate in the relationships between 2J(HgH) and 4J(HgH), 2J(HGH) and 2J(HGC). These deviations are discussed in terms of hyperconjugative pπdπ bonding between the methylene CH bonds and mercury. |
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