Selenophosphonates —

Comasseto, J.V., and Petragnani, N., The reaction of selenophosphonates with carbonyl compounds. Vinylic selenides, J. Organomet. Chem., 152, 295, 1978. 

Compounds of the same type as (74) and (75) were formed from (78) by the reaction with phenylselenophosphonic dichloride and triethylamine. If oxadithiapentalenes reacted with phenyl-selenophosphonic dichloride, selenadithiapentalenes were formed <88CC1494>. 

The most commonly used reagent for the decomposition of the trichlorophosphonium hexachlorophosphates obtained during the phosphorylation of alkenes with PCI5 has been although thiirane or P4Sio have occasionally been used. Decomposition of the chlorophosphonium phosphates with H2Se affords the selenophosphonic dichloride, RP(Se)Cl2 . 

In the case of amide, ester, salt, and acid chloride derivatives of selenophoric acid, selenophosphonic acid, and selenophosphinic acid, the band is strong and in the range 600-500cm" (16.67-20.00pm). 

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