ISSN:
0009-2940
Keywords:
Bisphosphane, bisdichloromethylene-bridged
;
Oxidation with tetrachloro-o-benzoquinone(TOB)
;
σ 6 λ5-phosphorate
;
Phosphorus Heterocycles
;
Structure elucidation
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The title compound 3 was formed in the reaction of Cl2PCCl2PCl2 (2) with catechol in the presence of triethylamine. The reaction of 3 with tetrachloro-o-benzoquinone (TOB), 4, led to the σ3P/σ5P-species 5, and the σ5P/σ5P-species 6a/6b. 5 was stable only in solution, and its existence and identity are postulated on the basis of its 31P-NMR spectrum. The structure of 6a/6b could not be assigned unambiguously to one isomer. The reaction of 6a/6b with water yielded the phosphorate 10. The structures of 3 and 10 were determined by single crystal X-ray methods. A wide P—C—P angle (123.2°) was observed in 3. The cation of 10 is a centrosymmetric, protonated DMF dimer with O—O 241.3 pm.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19971301020