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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Gmelins Handbuch der anorganischen Chemie. Nature 144, 1064–1066 (1939). https://doi.org/10.1038/1441064a0
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DOI: https://doi.org/10.1038/1441064a0