摘要:

A number of papers of K. Hamada and H. Morishita have appeared in this journal which have proposed novel structures for a range of organic compounds. These authors concluded that the linkages C-C-C, C-N-C, C-CO-C, C-C-X, C-Y-C and C-Y-Y-C, where X=C1, Br and I and Y=O, S, Se and Te, are all linear, whereas it has previously been held that these linkages are bent in nature. It is shown herein that these conclusions were based on poor quality data, and that no account was taken of previous experimental data from which detailed molecular structures have been calculated with a high level of confidence. Thus the conclusions of Hamada and Morishita are untenable and should be disregarded.

ISSN:0038-7010    

DOI:10.1080/00387018108062590

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

First they seem to lack a fundamental knowledge of spectroscopy and their rebuttals seem to be too unreasonable to blame a series of our paper1–10. For example, the reference24described n-butane as having a bent form C2h. However the experimental results cannot be explained according to C2h′ but can be explained according to nonrigid linear form D3d. Next I touch upon the rebuttals of Compton, and the Mckean and Dunkan44which were noted in the present Compton's article.

ISSN:0038-7010    

DOI:10.1080/00387018108062591

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

The far-infrared spectrum of benzophenone in carbon tetrachloride is recorded at room temperature. The far-infrared bands are compared with the available Raman data for the region.

ISSN:0038-7010    

DOI:10.1080/00387018108062592

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Normal coordinate analysis of C3Cl4and C3I4has been carried out on the basis of general valence force field, using Wilson's FG matrix method. Approximate vibrational frequencies are calculated from very simple force field and used as an aid in tentative assignments of observed frequencies from literature. Next the force fields are refined by adjustments to the experimental bands assigned as fundamentals. Calculated mean amplitudes for both molecules are reported.

ISSN:0038-7010    

DOI:10.1080/00387018108062593

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

The shape of an X multiplet of an ABC…X spin-system in a high-resolution pmr spectrum is dependent on the chemical shift sequence of its ABC… part. When the chem. shift of a proton of the ABC part of the spin-system migrates from one position to another may give rise to chem. shift equivalence, inducing drastical changes on the X multiplet. The case of Proline(Pro) and Hydroxy-Proline(OH-Pro), where similar phenomena have already been studied, is here throughly analysed.

ISSN:0038-7010    

DOI:10.1080/00387018108062594

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

A normal coordinate analysis for Urea is performed. The final force field carried out through an iterative selfconsistent method is used to calculate the potencial energy distribution of Urea Doand D4. The mean amplitudes confirm the characteristic values reported in the literature and the calculated centrifugal distortion constants are in agreement with the experimental ones.

ISSN:0038-7010    

DOI:10.1080/00387018108062595

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Lanthanide shift reagents can bring about dramatic simplifications of highly complex NMR spectra1,2. The applicability of the commonest of these (the thd and fod chelates of Eu, Pr and Yb) has been restricted to those molecules possessing a suitable N, O or S donor atom, although they may turn up in unusual guises, e.g. in quaternary ammonium compounds3.

ISSN:0038-7010    

DOI:10.1080/00387018108062596

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Complexes of Calf thymus DNA with Cu2+ions have been studied using ultraviolet (UV) absorption spectroscopy to probe the binding and melting behavior of DNA in the complex at 25°C, causing a melting of DNA as effectively as heating to 100°C. This strengthens the concept of Cu2+binding to the DNA bases as recently demonstrated by Richard et al.1

ISSN:0038-7010    

DOI:10.1080/00387018108062597

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0038-7010    

DOI:10.1080/00387018108062589

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor