Heterocycle formation using [PhP(Se)(μ-Se)]2. The crystal structures of [PhP(Se)(μ-Se)]2, PhP(Se)Se2(C7H10) and PhP(Se)(μ-Se)(μ-NPh)P(Se)Ph
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Abstract
An X-ray crystallographic study of [PhP(Se)(μ-Se)]21, the oxidation product of the homocycle (PhP)5 with ten equivalents of selenium, revealed that the molecule is centrosymmetric with a planar central P2(μ-Se)2 core and trans disposition of exocyclic PSe bonds. In the reaction of 1 with norbornene (bicyclo[2.2.1]hept-2-ene), crystallographic analysis of the product 2 revealed exo addition of a PhP(Se)Se2 unit across the CC bond, giving a 1,2-diselena-3-phospholane (C2PSe2) ring. Norbornadiene (bicyclo[2.2.1]hepta-2,5-diene) reacts more slowly with 1, allowing the isolation of a 1,2-selenaphosphetane (C2PSe ring) in addition to a diselenaphospholane. The reaction of 1 with azobenzene proceeds with cleavage of the NN bond and substitution of a bridging selenium atom in 1 by an NPh unit, giving the first crystallographically characterised selenaazadiphosphetane (P2SeN) ring.
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| Authors: | ; ; |
|---|---|
| Published in: | Journal of the Chemical Society Dalton Transactions, no. 3, pp. 300-303 |
| Publication date: | 01/01/2001 |
| Publisher: | Royal Society of Chemistry |
| Document type: | Article |
| Language: | English |
| DOI: | 10.1039/b008071n |
| ISSN: | 1364-5447, 1472-7773 |
| Open access: | No known open access copy: use Check availability for subscribed resources. |
| Cited by: | 39 |
| Subjects: |
Organoselenium and organotellurium chemistry
(Life Sciences > Pharmacology, Toxicology and Pharmaceutics > Toxicology)
Synthesis and characterization of novel inorganic/organometallic compounds
(Physical Sciences > Chemistry > Inorganic Chemistry)
Organophosphorus compounds synthesis
(Physical Sciences > Chemistry > Organic Chemistry)
|
| Identifiers: | OpenAlex W2131910359 |
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