Gmelins Handbuch der anorganischen Chemie

doi:10.1038/1441064a0

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Published: 30 December 1939

Gmelins Handbuch der anorganischen Chemie

Nature volume 144, pages 1064–1066 (1939)Cite this article

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Abstract

(1,2) SECTIONS 4 and 5 of the volume on potassium of this great work deal with its compounds with boron, silicon, phosphorus, arsenic, antimony and bismuth. Three derivatives of the boranes have been identified, namely, K₂B₂H₆, K₂B₄H₁₀ and K₂B₆H₉, of which the first is the most stable. Stock and his collaborators have shown that although boroethane acts as a dibasic acid, it is also unsaturated, so that when potassium acts upon it the ionized hydrogen is not discharged but is used to saturate the boron complex, its charge being transferred to the metal: H₂(BH₂: BH₂) + 2K = K₂(BH₃.BH₃). On hydrolysis of the product, a dihydroxydiborane K₂[H₄B₂(OH)₂] is formed, which was formerly regarded as a hypoborate, KH₃BO. Further hydrolysis yields potassium metaborate. The existence of five anhydrous and three hydrated potassium borates is indicated on the phase-rule diagrams, but only one borofluoride is mentioned.

Gmelins Handbuch der anorganischen Chemie

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