Polarisation measurements on basic beryllium acetate and beryllium acetylacetonate

Abstract

An investigation of organic beryllium compounds is being carried out by one of us (W. R. A.) with a view to obtaining information regarding their molecular configuration and a study of their molecular polarisations suggested itself as a means of deciding whether or not these compounds are spatially symmetrical. No previous attempts appear to have been made to measure the dipole moment of compounds of this type; other physical measurements have been made and will be discussed in a later section. In the present investiga­tion measurements have been made in benzene and carbon tetrachloride solution, but in both solvents the compounds are only sparingly soluble. 2. Purification of Materials . Beryllium Compounds .—Small quantities of basic beryllium acetate and beryllium acetylacetonate were very kindly supplied by Professor G. T. Morgan, F. R. S., and Dr. S. Sugden, and our best thanks are due to them. The melting points of the compounds were in accord with the values quoted at the literature: acetate, m.p. 285° C.; acetylacetonate, m.p. 108-5° C. Micro-chemical analyses, carried out by Dr. Schoeller, in Berlin, gave the following table.