## Abstract The ^1^H NMR spectra of 64 polychlorinated diphenyl ethers (PCDEs) were measured and assigned. Multiple linear regression analysis was used to estimate the effects of chlorine atoms on the ^1^H NMR chemical shifts and coupling constants. The βsimple sum rulesβ were found to be inadequat
1H NMR parameters of chlorinated biphenyls
β Scribed by Masaru Yanagisawa; Kikuko Hayamizu; Osamu Yamamoto
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- English
- Weight
- 205 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0749-1581
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β¦ Synopsis
Japan preted by additive contributions from the substituent effects of chlorine atoms. YANAGrSAWA' KIKUKo Complete analyses of the 400 MHz 'H NMR be addressed) and OSAMU were carried out in order to obtain the 'H chemical shifts and couolina constants. The HAYAMIZU (to whom ComesPondence spectra of 47 chlorinated biphenyls ( P C B ~) INTRODUCTION YAMAMOTO Polychlorinated biphenyls (PCBs) have many National Chemical Laboratory for Industry, 'H chemical shifts and-the coupling isomers and, since their 'H NMR spectra are Tsukuba Research Centre, constants on the biphenyl ring are inter-complicated, only 'H NMR parameters Table 1. 'H chemical shifts of PCBs (ppm from TMS) Compound CI substituents
π SIMILAR VOLUMES
The 13C NMR spectra of 48 chlorinated biphenyls are presented. The I3C shifts of the individual carbons are interpreted by the additive contributions from the substituent effect of a chlorine atom, and by the repulsive interaction of chlorine atoms substituted in a crowded relationship on the biphen
In the course of research it became necessary to cstrzblish a rapid and rclinblc analytical method for biphcnyl, and the mono-and clichlorobiphenyls. Although infra-red methods were nclcquatc for two or three component misturesl WC frequently had to deal with mistures containing from 4 to IO compon
## Abstract High resolution gas chromatography, with mass selective detection, has been used for the analysis of PCB on methyl 50 % octyl polysiloxane (SB 50 Octyl), methyl octadecyl polysiloxane, and a smectic polysiloxane (SB Smectic); and for the analysis of polychlorodibenzodioxins and polychlo
The 400 MHz 'H and 13C NMR parameters of 15 monoand polybrominated biphenyls were determined and compared with those of the corresponding chlorinated biphenyls.
## Abstract The configuration of some 1,4βdihydroxyβ2,3βdialkylcyclopentanes is assigned on the base of their ^1^HβNMR spectral parameters. The interaction of the hydroxyl group with some side chains is discussed. It is shown that the magnitude of the ^1^HβNMR spectral parameters of specific hydrog