104 P. T. CLEVE, 



II. Compounds of Mercurorsum Hg/', 



a. Ammines R" = Hg 2 . 2NH 3 



b. Amido-compouncU R'=Hg 2 . NH 2 



A. Mercuriammine. 

 Several compounds containing as radicle Hg + 2NH 3 are known, but it is scarcely 

 possible at present to determine, whether this radicle is the ammine Hg| NH 3 or the se- 

 midiammine Hg{NH 3 "^NH 3 . The latter seems to me more probable, as tbese compounds 

 are formed by direct addition of ammonia to mercuric salts and as they have a great 

 tendency to form basic salts. Their connection with the compounds of amido-mercury 

 is also easily explained by giving the radicle the formula Hg{NH 3 ^NH 3 . The change 



r , TT fNH 3 ^NH 3 R TT |XH 2 n , _ . . . . 



or a compound Hgj R to Hgj^ is due to the formation ol a salt or ammonium. 



The compounds containing Hg+2NH 3 = R are as follows: 



1. Chloride RCL *) 



2. lodide RI, ') 



3. Nitrates a. (R . O . Hg) . O, . 2N0 2 3 ) 



b. (R . Hg 2 . O,) . 2 . 2N0 2 4 ) 



4. Acetate R . 2 . 2C 2 H 3 + H 2 5 ) 



5. Sulphate R . 2 . SO,, + H 2 (1 ) 



Analogous compounds, containing aniline instead of ammonia are described by Schiff 7 ). 

 Some ammoniacal compounds of mercury contain only one mol. ammonia and 



may either eontain mercurisemiammine Hgj' ' or be double compounds between salts 

 of mercuriammine and mercuric salts. They are as follows: R" = Hg, NH : . 



1. Chloride R Cl 2 8 ) 



2. Bromide R Br 2 9 ) 



3. lodide RI. 10 ) 



4. Cyanide R Cy 2 u ) 



5. Ferrocyanide R 2 Cy 6 . Fe + H 2 '') 



B. Aidomercuricompounds R'=HgNH 2 . 



1. Chloride RCl") 



2. Chloride with mercuric chloride RCl + HgCl 2 14 ) 



') Kose, Fog^. Ann. 20. p. 158. 1830. 9 ) Rose, 1. c. p. 160. Rammelsberg, Pogg. Ann. 5o. p 

 l0 ) Rammelsberg, Pogg. Ann. 48. p. 170. 1839. Nessler, Chein. Centralbl. I. p. 530. 1856. u 

 x 161. 12 ) Bunsen, Pogg. Ann. 34. p. 139. 1835. 13 ) Mitscherlicii, 1. c. p. 410. Kane, Pogg. 

 368. 1837. Ullgren. K. Vet.-Ak. Handl. 1836. p. 301—368. Millon, 1. c. p. 419. 



