. Transactions of the Royal Society of New Zealand. especially in thecase of the even members, for which the data are more com-plete. A series of such a nature is that of the fatty amides, themelting-points of which tend to rise or fall as the correspond-ing numbers in the case of the anilides or paratoluididesdiminish or increase. The values obtained by adding theseseries together is given in Table II. Eobektson.—New Compounds similar to Antifebrine. 47 ?Sum of Melting-points. Amide and Anilide. Amide andParatoluidide. Table II. Number ofCarbon-atoms 101112141618
. Transactions of the Royal Society of New Zealand. especially in thecase of the even members, for which the data are more com-plete. A series of such a nature is that of the fatty amides, themelting-points of which tend to rise or fall as the correspond-ing numbers in the case of the anilides or paratoluididesdiminish or increase. The values obtained by adding theseseries together is given in Table II. Eobektson.—New Compounds similar to Antifebrine. 47 ?Sum of Melting-points. Amide and Anilide. Amide andParatoluidide. Table II. Number ofCarbon-atoms 101112141618 In both cases the numbers for the odd members fall con-tinuously. In the even series there is a regular minimum,and in one instance a corresponding maximum at a distanceof six carbon-atoms. The resemblance becomes clearer whenthe results are plotted graphically. 24-0 194 205195 159 184 171 166 149 145 235 189 175169 178 202 187 175173 148 170 183 186 195 196 202 203 207 220 200 180 (60 Amide + anilide IM P Amide-+pajrcLtohx,tdixLe/. 10 12 14 16 48 Transactions. In addition to these compounds the lower members of thenaphthylamides have also been prepared. In each case themelting-points form an even less regular series than do theanilides and paratoluidides. Number of Carbon-atoms in Corresponding Acid. 2 3 4 5 6 7 8 9101112 Table III a, Napbtl ,yl- §|jm /S, Napbtbyl amide amide. 0 . 159 291 0 132 . 116* 286 170* . 120* 287 167* . Ill* 277 166* . 93* 264 171* . 106* 248 142* . 91* 200 109* . 95* 194 99* . 92* 191 105* . 87* 185 98* Determinations by the author. These series scarcely show any regularity even when theodd and even members are considered separately. But it isnoticeable that when the melting-point of the a compoundrises, that of the ft derivative falls, and vice versa. Con-sequently, on adding the two series together it might beexpected that regularities would appear. Such is indeed thecase; the sum of the melting-points of the even as well asthe odd mem
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