Synthesis and Structure of a Hexaazadiphosphadiarsatricyclodecane
✍ Scribed by Prof. Dr. Otto J. Scherer; Dipl.-Chem. Walter Glässel; Doz. Dr. Gottfried Huttner; Dipl.-Chem. Albin Frank; Dipl.-Chem. Peter Friedrich
- Publisher
- John Wiley and Sons
- Year
- 1976
- Tongue
- English
- Weight
- 237 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0044-8249
No coin nor oath required. For personal study only.
✦ Synopsis
extensively flatten the molecular skeleton around the nitrogen atoms and that the SiNSi angle (presumably near 120") will therefore change less than the CNC angle.
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The 14N coupling constant of the tetrakis(trimethylsily1)hydrazine radical cation is at least 3 G smaller than that of analogous tetraalkyl derivativesf6] and equal to that of the tetraphenylhydrazine radical ati ion''^. Thus trimethylsilyl and phenyl groups lower the spin density at the nitrogen atoms to the same extent.
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The coupling constants of the bicyclic tetrasilylhydrazine radical cation differ considerably from those of the corresponding (nonmethylated)[61 tetraalkyl derivative, but are comparable with those of the isoelectronik tetrasilylethylene radical anion. In the latter system the larger coupling constants of the peripheral hydrogen atoms (Table : a:H2(Y' and ugH3) and the larger a,,s, value['' suggests a somewhat lower spin density in the central >C=CCe bond relative to >N-N<'@
📜 SIMILAR VOLUMES
A shift from the computational to the synthetic side has taken place in the quest for compounds containing planar-tetracoordinate silicon: The first tetraazasilaspiro[4.4]nonane with two alkylene bridges has been prepared [Eq. (1)]. According to the X-ray structure analysis, the angle between the tw