308 PROFESSOR LETTS ON PHOSPHORUS-BETAINES. 
Wishing to obtain some of this body for his experiments, the author pro- 
ceeded in the manner described by Hormann, but with somewhat different 
results. 
The following experiment will show this :— 
671 grms. of triethyl-phosphine and 5-9* germs. of chloracetic ether (boiling 
point 140°-145°) were allowed to react on each other in the apparatus already 
described for preparing the hydrochlorate, and with the same precautions. 
The two liquids simply mixed at first, but on shaking for some time an 
oily layer was precipitated, and the mixture grew very hot.t By continued 
shaking the upper layer (triethyl-phosphine ?) gradually disappeared, and even- 
tually the product consisted of a colourless syrupy liquid. In a few minutes 
very beautiful circular crystals began to appear, and soon the contents of the 
flask had completely solidified. After an hour’s interval the white crystalline 
mass thus obtained was broken up and treated three times in succession with 
dry ether. Most of it was then thrown on to blotting paper and placed 
in vacuo over sulphuric acid. 
It was considered sufficient to fix the composition of the body by a chlorine 
determination, and by the analysis of the chloroplatinate. 
1:231 required 50:0 c.c. decinormal AgNO,=0°1775 Cl =14°4 per cent. 
Obtained. Calculated for (C,H,) 
P Cl 
3” \CH,—COOC,H,. 
Chlorine, ; . 14:4 
14°8 
The ethyl-chlorate of triethyl-phosphorus-betaine is very deliquescent, and 
dissolves with ease in alcohol and chloroform. It cannot, however, be recrys- 
tallised from its solution in either of these liquids, even by the addition of 
ether: the ether precipitating oily drops, which refuse to solidify. 
Chloroplatinate of Ethyl-Chlorate of Triethyl-Phosphorus-Betaine.—A solu- 
tion of the ethyl-chlorate yields a copious precipitate of a light orange colour 
with chloride of platinum, which dissolves on boiling the solution, and separates 
on cooling in crystalline scales. The chloroplatinate thus obtained was ana- 
lysed by dissolving it in water, precipitating the platinum by sulphuretted 
hydrogen, and determining the chlorine in the filtered solution volumetrically. 
0°8245 gave 0:2025 Pt = 24:5 per cent. Pt. 
08245 ,, 0:8643 AgCl = 0:21532 Cl = 26:1 per cent. Cl. 
Cl 
Obtained, Calculated for 2 (C3H,).PC PtCl, 
CH, - C000,H 
24-0 
Platinum, 24:5 , ; ; : 
Chlorine, 26°1 : . , ? ; : : 25°9 
* These quantities are equimolecular. 
+ From time to time the mixture was cooled by immersing the distilling flask in water. 
