294 W. Gibbs on the Hexatomic compounds of Cobalt. 
sodie hypophosphite, the solution of mercuric salt having the 
temperature of 40° C. The mercurous chloride was then 
Antimonio-chloride of purpureocobalt.—A solution of anti- 
monious chloride added to one of chloride of purpureocobalt 
gives a precipitate of small, granular, dull violet red crystals. 
These may be washed with strong chlorhydric acid and’ dried 
by pressure between folds of porous paper, and afterward at 
100° C. ater decomposes it readily, with precipitation of 
SbOCI. The formula of this salt is 
Co,(NH,),,Cl,+SbCl,, 
as appears from the following analyses : 
0°8100 gr. gave 0°3402 gr. SO,Co=15-99 per cent cobalt. 
0°6500 gr. gave 0°1370 gr SbhO, =16°64 per cent antimony. 
The formula requires 16-22 per cent cobalt, and 16 49 per cent 
antimony. 
Bismuthous chloride gives a lilac-red precipitate in solutions 
of chloride of purpureocobalt, insoluble in strong chlorhydric 
aa readily decomposed by water, with precipitation of 
i 
“ge 
Ji Reena moisture, and partly from slight decomposition, 
_ and believe that the salt is seal auhiydvous: The formula 
: Co,(NH,),9.0.(CrO,). 
