**XPS. and ^1^H‐NMR. spectra of 1,3‐diaryltriazenes complexes of Hg(II)** The core binding energies C 1__s__, N 1__s__, Hg 4__f__~7/2~, Hg 4__f__~5/2~ in 7 symmetrical __p__‐substituted 1,3‐diphenyltriazenes complexes of Hg(II) have been measured by XPS. Within the limits of experimental error (± 0
Etude du Comportement Photochimique de quelques Diaryl-1,3-triazènes
✍ Scribed by Par Michel Julliard; Gaston Vernin; Jacques Metzger
- Publisher
- John Wiley and Sons
- Year
- 1980
- Tongue
- German
- Weight
- 720 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Study of the Photochemical Behaviour of Some Diaryl‐1,3‐triazenes
The photolysis of Diaryl‐1,3‐triazenes gives products whose structures are consistent with a cage recombination process of homolytically formed radicals and subsequent abstraction of hydrogen from the solvent molecules by arylamino radicals. In aromatic solvents, a free‐radical chain process leads to the formation of products resulting from the homolytic substitution on the solvent. Quenching experiments show that singlet and triplet excited states are reactive but that intersystem crossing efficiency is low.
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**^1^H‐NMR. behaviour of 1,3‐diaryltriazenes in neutral and acidic solvents** Formation and decomposition of 1,3‐di‐aryltriazenes can be studied by ^1^H‐NMR. Triazenes decompose in acidic medium or by addition of isoamylnitrite: in the last case, the spectrum shows emission lines characteristic of
**Synthesis of __N__‐Alkyl‐arylamines by Thermolysis or Photolysis of 3‐Alkyl‐1,3‐bis(__p__‐chlorophenyl)triazenes** The thermolysis of 3‐alkyl‐1,3‐bis(__p__‐chlorophenyl)triazenes in benzene or methanol leads to the formation of __N__‐alkyl‐__p__‐chloroanilines (**2**) in 19–50% yield, __N__‐alkyl
**Electron Impact Mass Spectrometry of the 3‐Desoxy‐1,2: 5,6‐di‐__O__‐isopropylidene‐3‐methylidene‐δ‐D‐hexofuranose and Some C(3′)‐Substituted Analogues** The mass spectra of the 3‐desoxy‐1,2:5, 6‐di‐__O__‐isopropylidene‐3‐methylidene‐ α‐D‐__ribo__‐hexofuranose and of some C(3′)‐mono‐ and ‐disubsti
The PMR spectra of some new 1,3,2-0xazaphosphorinanes are analysed. In one case, after elimination of the P--H spin coupling, the spectra give rise to a particular ABKLXY pattern in which certain coupling constants between vicinal protons are zero. The ABKLXY system where JAK = JAL = JBK = JBL is st
## Abstract Les spectres de RMN du proton de quelques nouveaux oxazaphosphorinanes‐1,3,2 sont analysés. La stéréochimie et la conformation du cycle sont précisées. La valeur de l'enthalpie libre conformationnelle et de l'angle de torsion des liaisons C‐4C‐5 et C‐5C‐6 est calculée pour quelques un