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29Si and 13C nuclear magnetic resonance studies of organosilicon chemistry. I. Trimethylsilyl compounds

✍ Scribed by R.K Harris; B.J Kimber


Publisher
Elsevier Science
Year
1975
Weight
922 KB
Volume
17
Category
Article
ISSN
0022-2364

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29Si and 13C Nuclear magnetic resonance
✍ R.K. Harris; B.J. Kimber πŸ“‚ Article πŸ“… 1976 πŸ› Elsevier Science βš– 446 KB

Silicon-29 spin-lattice relaxation times and 29Si-(1H} nuclear Overhauser enhancements are reported for five trialkylsilanes and for sym-tetramethyldisiloxane, all of which contain a direct Si-H bond. Relaxation rate contributions from (Si, H) dipolar interactions and from other mechanisms are evalu

29Si and 13C Nuclear magnetic resonance
✍ R.K. Harris; B.J. Kimber πŸ“‚ Article πŸ“… 1976 πŸ› Elsevier Science βš– 680 KB

29Si and 13C spin-lattice relaxation times and the corresponding nuclear Overhauser enhancements have been measured for Ph,SiH,\_, (n = 1,2, 3), for Ph,SiHMe and for Ph,SiCl, . Thence dipolar and other contributions to the relaxation rates have been separated. The dipolar rates are used to discuss i

29Si and 13C NMR studies of organosilico
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## Abstract ^29^Si spectra have been obtained for four trimethylsilylated hexopyranoside sugars, and the resonance due to the CH~2~OSiMe~3~ group at position 5 has been assigned by experiments involving gated decoupling at a single ^1^H frequency.

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H and I3C N M R studies were carried out on l-ethenylnaphthalene, Zethenylnaphthalene, 9ethenylanthracene, 9ethenylphenanthrene, l-ethenylpyrene and l-ethenylperylene. Assignments of proton and carbon resonances were made with the aid of 2D COSY, 2D HETCOR, 2D COLOC, 2D COLOCS, 3J(H,C) INAPT, and NO

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## Abstract The ^13^C and ^15^N n.m.r. results for a series of diazo compounds are reported. It is found that the diazo carbon is shielded by an extraordinary amount compared with normal sp^2^ hybridized carbons. The ^15^N chemical shifts reveal that the terminal nitrogen is deshielded relative to