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Updated: Aug 24, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
Published on: November 22, 2016
The alkali hypophosphites KH2PO2, RbH2PO2 and CsH2PO2
Marina I Naumova1, Natalia V Kuratieva, Nina V Podberezskaya
1Institute of Inorganic Chemistry, SB Russian Academy of Sciences, Academician Lavrentiev Avenue 3, Novosibirsk 90, 630090 Russia. d.y.naumov@ngs.ru
Abstract:
The structures of the hypophosphites KH(2)PO(2) (potassium hypophosphite), RbH(2)PO(2) (rubidium hypophosphite) and CsH(2)PO(2) (caesium hypophosphite) have been determined by single-crystal X-ray diffraction. The structures consist of layers of alkali cations and hypophosphite anions, with the latter bridging four cations within the same layer. The Rb and Cs hypophosphites are isomorphous.
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