## Abstract The ^13^C [hexadeutero‐dimethylsulfoxide (DMSO‐__d__~6~), hexamethyl‐phosphoramide (HMPA)‐__d__~18~and solid‐state] and ^15^N (solid‐state) NMR spectra of six __C__‐aminobenzimidazoles have been recorded. The tautomerism of 4(7)‐aminobenzimidazoles and 5(6)‐aminobenzimidazoles has been
A 13C and 15N NMR investigation of two proton sponges in solution and in the solid state
✍ Scribed by J. Klimkiewicz; L. Stefaniak; B. Brzeziński; E. Grech; S. Kuroki; I. Ando; G.A. Webb
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 244 KB
- Volume
- 323
- Category
- Article
- ISSN
- 0022-2860
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract Experimental and theoretical ^15^N and ^13^C NMR data for the three nitrobenzaldehyde guanylhydrazones are reported. The theoretical data were obtained using sequential molecular dynamics/quantum mechanics methodology for the calculation of flexible molecules in a condensed phase, follo
## Abstract Three __N__‐substituted pyrazoles and three __N__‐substituted indazoles [1‐(4‐nitrophenyl)‐3,5‐dimethylpyrazole (1), 1‐(2,4‐dinitrophenyl)‐3,5‐dimethylpyrazole (2), 1‐tosyl‐pyrazole (3), 1‐__p__‐chlorobenzoylindazole (4), 1‐tosylinda‐zole (5) and 2‐(2‐hydroxy‐2‐phenylethyl)‐indazole (6)
## Abstract Trifluoroacethydrazide is unstable even in the solid state with respect to hydrazonium __N,N__′‐ditrifluoroacetyl hydrazinate, as shown by ^15^N and ^13^C NMR spectroscopy. The ^1^H, ^13^C and ^15^N NMR data and rotamer distributions of formyl‐, acet‐ and trifluoroacet‐hydrazide and of
## Abstract In this investigation we report a complete assignment of ^13^C, ^1^H and ^15^N solution and solid state chemical shifts of two bacterial photosynthetic pigments, bacteriochlorophyll (BChl) __a__ and bacteriopheophytin (BPheo) __a__. Uniform stable‐isotope labelling strategies were devel