COMMUNICATIONS TO THE EDITOR
June 3 , 1'360
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These are hydrogen bonding interactions of the type B - H f . . .0H2.2,5It has been estimated that for equal polar effects of substituent groups on nitrogen, this hydrogen bonding interaction is responsible for a decrease in base strength in aqueous solution of a tertiary relative to a primary amine of about 3.6 powers of ten.ja In certain non-aqueous solvents tertiary alkyl amines, as expected by electronic arguments, are actually more (4) Jenkins Laboratory of Biophysics, T h e Johns Hophins Univerbasic than primary amines.6 sity, Baltimore, Llaryland. In the region 44G4TG HzSOd, a very simple J E K N Y P. GLUSKER D. VAN DER HELM correlation exists between ( H R - Ho) and the THEINSTITUTE FOR CANCER RESEARCH 1i:ARNER E. L O V E 4 activity of water, cf. Fig. 1. Seven arylmethanols MARILYX L. DORSBERC were used to establish the H R function in this region PHILADELPHIA 11, PA. A L. PATTERSON and within experimental error no dependecce of RECEIVEDMARCH 2 , 1960
The oxygens O1 and Ob are cuordiiiated to other sodium ions (01and Oa take no part in the coordination). The structure is notable for the large numberaof close intra- and intermolecular contacts (
