𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Vibrations de valence CH/CD fondamentales et harmoniques de dérivés halogénés du méthane et du deutériométhane

✍ Scribed by M. Avanessoff; Ho Dac Thang; T. Gäumann


Publisher
John Wiley and Sons
Year
1971
Tongue
German
Weight
958 KB
Volume
54
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

The fundamentals and overtones of the CH stretching vibrations of a number of halogenated methanes and deuteriomethanes are compared with a hypothetical model consisting of isolated groups. The anharmonicity constants are evaluated and lie between −20 cm^−1^ and −130 cm^−1^ for the CH and CD stretching vibrations. The value of the anharmonicity constant for a coupling between two different modes of vibration is always greater (in absolute numbers) than its value for an overtone of one frequency. The constant is larger for a symmetric mode than for an asymmetric mode in the case of a CH vibration; the contrary is true for a CD bond. Complex interactions between different vibrations often strongly modify the spectra of the overtones. It is shown, however, that the conception of an isolated group is helpful for evaluating the spectra of these substances.


📜 SIMILAR VOLUMES


Les dérivés sulfamidés du tétraméthyle-m
✍ J. Hoste; F. Govaert 📂 Article 📅 2010 🏛 Wiley (John Wiley & Sons) ⚖ 406 KB 👁 1 views

Les d6riv6s sulfamid& du t6tram6thyle-rn6thane I1 Sur quelques sulfamid& spirocycliques et semi-spirocycliques Par J. HOSTE et F. GOVAERT (Gand) ( l ) J . HOSTE et F. GovAmr, Les ddrivds siiljamidds d u tdtramdthylerndthane, I (Bull. SOC.

Sur Quelques Dérivés Quaternaires du Tri
✍ J. Cazier; F. Govaert 📂 Article 📅 2010 🏛 Wiley (John Wiley & Sons) ⚖ 465 KB

Sur quelques diiriviis quaternaires du triaminomiithyle-oxymiithyle-miithane, du 3-aminomiithyle3-bromem6thyle-oxacyclobutane et du 3-3-diaminomiithyle-oxacyclobutane par 1. CAZIER ( I ) et F. GOVAERT SUMMARY. -Continuing earlier publicatiuns, e here communicate a method of preparation for some qua

Les dérivés sulfamidés du tétraméthyle-m
✍ J. Hoste; F. Govaert 📂 Article 📅 2010 🏛 Wiley (John Wiley & Sons) ⚖ 453 KB

+ 2 H, NC, H, SO, NH, + 2 NaBr (11) (a) F. J . GOVAERT, Proc. Amsterdam, XXXVII (1934), no 3, pp. 156-162. J . HOSTE ET F. GOVAERT Le rendement en ce produit est de 1,7 %. Ce dernier compose a aussi BtB obtenu ZI partir du diaminaspiroheptane (') par condensation avec le p.ac6taminobenzbne-sulfochlo

Les spectres de RMN. et de masse de quel
✍ B. Willhalm; A. F. Thomas; M. Stoll; E. G. E. Hawkins 📂 Article 📅 1963 🏛 John Wiley and Sons 🌐 German ⚖ 335 KB

## Abstract The NMR. and mass spectra of some chlorinated methylbutenes, methylbutanes and related substances derived from isobutane have been measured. Plausible mechanisms for the principal fragmentation processes have been obtained by deuteration studies.

Etude par RMN du Proton et du Carbone-13
✍ J. Riand; M. T. Chenon; N. Lumbroso-Bader 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 English ⚖ 632 KB

## Abstract Les effets de substituant des groupes méthyle et amino sur les déplacements chimiques de la pyrimidine ont été étudiés par RMN du proton et du carbone‐13 et comparés à ceux observés pour le benzène et la pyridine. Compte‐tenu des interactions mutuelles des substituants, les déplacements

Sur les dérivés de la fluorénone VIII. D
✍ Louis Chardonnens; Vito De Blasi; Jean-Luc Barras 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 German ⚖ 576 KB

## Abstract By condensation of the chlorides of the four isomeric fluorenecarboxylic acids, respectively of the three 1‐, 3‐ and 4‐fluorenonecarboxylic acids with fluorene, followed by reduction of the obtained mono‐respectively diketones, the four difluorenylmethanes I, II, III and IV are synthesi