13C CP-MAS solid-state NMR and multinuclear solution state magnetic resonance spectra of some sulphur amides and carboxamides
✍ Scribed by Anna-Maija Häkkinen; Pirkko A. Ruostesuo
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 280 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
The ^13^C NMR chemical shifts in the solution and in the solid state and those of ^15^N and ^17^O and the line widths of the ^14^N and ^17^O resonance signals in the solution state were determined for carboxamides, aliphatic and aromatic sulphon‐ and sulphin‐amides and a thioamide (thioacetamide).
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## Abstract Absolute coupling signs of ^1^__J__(^119^Sn, ^13^C) (2__J__(^119^Sn, ^1^H) (n^5^‐C~5~H~5~)~2~Sn (1) and ^1^__J__(^119^Sn, ^13^C) (2__J__(^119^Sn, ^13^C) (3__J__(^119^Sn, ^1^H) (>O) in (__n__^5^‐C~5~Me~5~)~2~Sn (2) were determined using advanced direct and indirect two‐dimensional method
## Abstract The solid‐state CP/MAS ^13^C‐NMR spectra (cross‐polarization/magic‐angle spinning ^13^C‐NMR) of eight lower cyclic and one linear oligomers and several polymers of (__R__)‐3‐hydroxybutanoic acid (3‐HB) are reported. The polymeric samples of different origin and molecular weight give rem
## Abstract Internal rotation about the C‐2–C‐3 bond was observed in the ^13^C CP‐MAS NMR spectra of the solid complexes [M~2~(ηHC^1^C^2^C^3^Me~2~)(CO)~4~(ηC~5~H~5~)~2~]^+^ [BF~4~]^−^ where M = Mo or W.