Solubisity of Diborane in Ethyl Ether and in Tetrahydrofurane

摘要

The pressure over a solution of diborane la ethyl ether and in tetrahydrofurane has been measured in a bomb at different temperatures. From these data the solubility of diborane at 20°C and diborane pressure of one atmosphere baa been calculated as 1.1 g. per 100 g. ethyl ether, 8.1 g. per 100 g. tetrahydrofurane. Solubility of diborane in ethyl ether is proportional to pressure and slightly higher than predicted by Raoult's law. In tetrahydrofurane solubility increases as the square root of diborane pressure, suggesting the formation of a complex with the solvent. Molar heat of solution of diborane in ethyl ether has been calculated, roughly, as -2800 cal, in tetrahydrofurane as -4900 cal.