RICHARDS AND MOULTON. — CUPRIANILINE SALTS. 87 



IV. 



CONTRIBUTIONS FROxM THE CHEMICAL LABORATORY OF 

 HARVARD COLLEGE. 



ON THE CUPRIANILINE ACETOBROMIDES. 



By J^heodore William Richards and Frederic Charles 



MoULTON. 

 Presented June 9, 1894. 



Recent investigations * have shown that double salts of cupriam- 

 monium containing two acids are easily obtainable in great numbers. 

 It becomes a matter of interest to determine whether the substituted 

 ammonias are capable of acting in the same way ; and the present 

 paper contains an account of the first experiments in this direction. 



The only cupraniline compounds of which descriptions were found 

 are three cuprosaniline compounds described by Saglier,f and cupri- 

 aniline chloride (CUCI22C6H7N) described by Destrem.J Hence there 

 was a wide field left open for the present investigation. 



The compounds described in this paper are tabulated below. 



(1.) Cu(C6H,N),Br2. 



(2.) Cu(CoH,N)2BrC2H.302. 



(3.) Cus(aHvN)ieBri5(C2HA). 



(4.) CMC,U,^\,Br,,{C,U,0,),. 



(5.) Cu;(C6H,N)ieBr,3(C2H.302)3. 



(6.) Cu2(C6H7N)4Br(aH302)3. 



(7.) Cus(CoH,N)ioBr(C2H30)i5. 



Of these the simpler ones, Nos. 1 and 2, are undoubtedly definite 

 compounds. Whether or not some of the others are isomorphous mix- 

 tures of these with cuprianiline acetate, which has not as yet been 

 prepared in a pure state, it is hard to say. 



* Richards and Shaw, These Proceedings, XXVIII. 247; Richards and 

 Whitridge, These Proceedings, XXX. 458 ; Richards and Oenslager, These Pro- 

 ceedings, XXXI. 78. 



t Comples Rendus, CVI. 1422. 



t Bulletin de la Soc. Chim. de Paris, XXX. 482. 



