Phosphorous acid ester

from Wikipedia, the free encyclopedia
Two tautomeric forms of phosphonic acid

Phosphorous acid esters (also phosphites ) are esters of the formal phosphonic acid P (OH) 3, which is only present in equilibrium in small amounts in free form (outdated also known as phosphorous acid ). Phosphorous acid esters are compounds of the form P (OR) 3 with (R = alkyl radical or aryl radical ), such as trimethyl phosphite .

Phosphorous acid is a tautomeric form of phosphonic acid (the equilibrium in the figure is clearly on the left side of the reaction equation). Therefore, esters of the phosphonic acid HP (= O) (OR) 2 - analogously with the tautomeric form P (OH) (OR) 2 - are often counted among the phosphorous acid esters (e.g. dimethyl phosphite ).

Individual evidence

  1. ^ Wiberg, Egon., Wiberg, Nils ,: Textbook of Inorganic Chemistry . 102nd, heavily reworked and verb. Ed. De Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 .