530 
DE. A. W. HOFiyiA^'X OX THE PHOSPHOEUS-BASES. 
These numbers lead to the formula 
c ,3 H 33 p Pt CI 3 = [(C 3 H 3)3 (c, H-) P] Cl, Pt a 
2 ’ 
which represents the platinum-salt of a phosphonium in which the fourth equivalent of 
hydrogen is replaced by the molecule C;H- (probably benzyl, the radical of benzyl-alcohol). 
Theory. 
Ci3 
156 
37-66 
H,, 
22 
5-31 
P 
31 
7-49 
Pt 
98-7 
23-83 
CI3 
106-5 
25-71 
414-2 
100-00 
Experiment. 
t ^ 
I. II. III. lY. Y. 
37-25 37-46 37-41 
5-32 5-36 5-34 
23-87 23-83 
25-65 
The transformation of triethylphosphine under the influence of dichloride of ben- 
zylene, evidently takes place according to the following equation : 
3 [(C 2 1-15)3 P] + C; He Cl, + H, O = [(C, H ,)3 H P] Cl + [(C, K,), (C- H,) P] Cl + (C, H 3)3 P 
It may be that the formation of the triethyl-benzylphosphonium-compomid is preceded 
by the production of an ephemeral diatomic base containing the radical C- H,;, 
(C; He)' 
(C2He)3P' 
(C2He)3P. 
CL. 
which is subsequently decomposed under the joint influence of water and an excess 
of triethylphosphine. I have not, however, been able, experimentally, to trace this 
base. Moreover, a difference in the deportment of triethylphosphme ^\ith the com- 
pounds of ethylene and benzylene is readily intelligible, if Ave recollect that they 
are far from being analogous, bichloride of benzylene representing in the benzyl- 
group the diatomic derivatives which have been obtained from ethylic aldehyde. 
The analysis of the benzyl-triethylphosphonium-platinum-salt concludes the experi- 
mental part of this section of my researches. The folloAA ing Table gh'es at a glance the 
several groups of bodies examined in Parts II. and III. of this inquii-y. 
MOXATOMIC COMPOUNDS. 
PIIOSPHOEHS-GEODP. 
Monophosphonium-salts. 
Ethyl-series. 
Salt of Tetrethylphosphonium 
Salt of Bromethyl-triethylphosphonium . . 
Salt of Chlorethyl-triethylphosphonium . 
Salt of Oxethyl-triethylphosphonium . . . 
Salt of Vinyl-triethylphosphonium 
[(C3 H,).P]Bi-. 
[(C3H,Bi-)(C3H3)3P]Br. 
[(C3H,Cl)(C3H5)3P]Br. 
[(C,H3HO)(C,H3)3P]Br. 
[(C3n3)(C.3H3)3P]Br. 
