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Cyclic S-N compounds and phosphorus reagents-XVH. Synthesis and X-ray structural characterization of (Ph)(DCA)(Me2N)P = N-S3N3 heterocycle
Janaswamy Srinivas, G. Sreenivasa Murthy, Madhugiri N. Sudheendra Rao
Published in
Volume: 110
Issue: 2
Pages: 89 - 95
The phosphiniminocyclotrithiazene, (Ph)(DCA)(Me2N)PN-S3N3 (II) [DCA = dicyclohexylamino] was obtained in ≈ 70% yield from room temperature reaction of S4N4 with the corresponding phosphine, (Ph)(DCA)(Me2N)P (I). Single crystal X-ray structure determination of (II) reveals slightly different P-N bond lengths around phosphorus [P-N(4): 1-607; P-N(5): 1-645 and P-N(6): 1-638 Å] and almost planar configuration around both N(5) and N(6). The Incoordinate sulphur [S(l)] substantially deviates (0-663 Å) from the mean plane of the heterocycle. The structural parameters of (II) are compared with the recently reported diethylamino and di-n-butylamino analogues. (II) affords (Ph)(DCA)(Me2N)P = N-S3N (IV) in ≈ 60% yield on thermolysis in solution.
About the journal
JournalProceedings of the Indian Academy of Sciences: Chemical Sciences
Open AccessNo
Concepts (11)
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    Chemical bonds
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    Crystal structure
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    Nitrogen compounds
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    Silicon nitride
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    Single crystals
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    Synthesis (chemical)
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    X ray crystallography
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    Phosphorus compounds