𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Carbon-13 NMR spectra of adamantane carboxylic acids and diamantane mono- and di-carboxylic acids and esters

✍ Scribed by Milan Hájek; LuděK Vodička; Petr Trška; Vladimír Sklenář


Publisher
John Wiley and Sons
Year
1985
Tongue
English
Weight
257 KB
Volume
23
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis


Table 4. Predicted and observed" aryl carbon shieldings relative to benzene for the 4-substituted phenylsulphonyl moiety in cis-and trans-l-arylsulphonyl-2-~lcy~opropanes shielding (pprn) Compound cis trans No. C-1' C-2 and C-6' C-3' and C-5' C-4' C-1' C-2 and C 6 ' C-3' and C-5' C-4' Carbon-13 NMR Spectra of Adamantane Carboxylic Acids and Diamantane Mono-and Di-carboxylic Acids and Esters The 13C NMR chemical shifts of 17 adamantane and diamantane mono-and dicarboxylic acids and methyl esters have been measured in CDCI, and D,O. The assignment of the chemical shifts was verified using an additivity rule and the lanthanide shift technique.


📜 SIMILAR VOLUMES


Carbon-13 chemical shifts of some model
✍ P. A. Couperus; A. D. H. Clague; J. P. C. M. van Dongen 📂 Article 📅 1978 🏛 John Wiley and Sons 🌐 English ⚖ 390 KB 👁 1 views

## Abstract Selected model carboxylic acids and esters dissolved in deuteriochloroform have been studied by carbon‐13 nuclear magnetic resonance under standardized conditions. Assignments of the chemical shifts have been made for all samples, and the spin–lattice relaxation times and nuclear Overha

Photoelectron spectra of molecules. II.
✍ U. Mölder; I. Koppel; P. Burk; R. Pikver 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 237 KB 👁 2 views

## Ž . He I photoelectron PE spectra of four carboxylic acids and five esters are measured. Semiempirical and ab initio quantum chemical calculations are used for the interpretation of the spectra. The complex approach which uses empirically established relationships Žthe dependence of valence ele

Carbon-13 NMR spectra of methylated cycl
✍ Ernest L. Eliel; K. Michal Pietrusiewicz 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 334 KB

## Abstract The ^13^C NMR spectra of cyclobutane and seven methylated homologs and of ethyl cyclobutanecarboxylate and five isomeric diethyl cyclobutanedicarboxylates are reported and substituent parameters for methyl groups in methylcyclobutanes are calculated. Of note is a sizeable and nearly con

Electron impact mass spectrometric inves
✍ Carlo Costa; Antonella Bertazzo; Graziella Allegri; Silvia Catinella; Pietro Tra 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 317 KB

The electron impact-induced fragmentation processes of pyrrole-2-, -3, -2,3-, -3,4, -2,s and -2,3,karboxylic acids were investigated with the aid of metastable ion, collisional and deuterium labelling experiments. The general behaviour of these compounds is discussed in detail, together with the rea

Additivity of proton and carbon nmr chem
✍ Daniel Bruck; Mordecai Rabinovitz 📂 Article 📅 1978 🏛 John Wiley and Sons 🌐 English ⚖ 247 KB

## Abstract The additivity of the proton and carbon chemical shift increments due to structural changes in a series of conjugate acids derived from benzene polycarboxylic acids is reported. In the acids, two sets of increments had been applied, one to the __ortho__ diacids and one to acids which do

Ionization Shifts in 1H-NMR Spectra of α
✍ Jerzy W. Jaroszewski; Peter Grossen; Peter Mohr; Christoph Tamm 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 German ⚖ 480 KB

Changes in chemical shifts of olefinic protons in a number of a$-and a,P,y,G-unsaturated carboxylic acids caused by ionization of the COOH group were investigated. The ionization shifts of a-H-atoms are -0.09 to 0.07 ppm, those ofg-H-atoms are 0.324.47 ppm. The ionization shifts of 8-H-atoms are sub