Wells and Metzger — Ccesium-Antimonious Fluorides. 451 



Art. XXX TIL — On the Ccesium-Antimonious Fluorides 

 and Some Other Double Halides of Antimony ; by H. L. 

 Wells and F. J. Metzger. 



We have made a thorough study of the double salts formed 

 by caesium fluoride and antimonious fluoride with the result 

 that five compounds have been prepared. This is an unusual 

 number for a series of double salts, and it gives a good illus- 

 tration of the facility with which caesium forms such com- 

 pounds. 



The salts to be described have the following formulae : 



Type. 



1 : 3 CsF-3SbF 3 



1 : 2 CsF-2SbF 3 



4 : 7 4CsF-7SbF 3 



1 : 1 CsF-SbF 3 



2 : 1 2CsF-SbF 3 . 



The previously described antimonious double fluorides, all 

 of which were prepared by Fliickiger, a are as follows : 



Type. 



1 : I KFSbF 3 , 



2 : 1 2KF-SbF„, 2LiF«SbF 3 , 2NH 4 FSbF 3 . 



3 : 1 3NaF-SbF 3 . 



The following chlorides, bromides and iodides have been 

 described : 



Type. 



1 : 2 RbCl-2SbCl..* 



3 : 4 3NH 4 I-4SbI 3 "-9H 2 0.t 



1 : 1 NH 4 Cl-SbCl„t NH 4 I-SbI,-2H 9 0.§, KI-SbI,-H,0,§ 



RbClSbCl 3 .** 



3 : 2 3KI 2SbI 3 -3H 2 0,f 3NaI-2SbI,-12H 9 0,t 3NH 4 I-2SbI,-3H s O,t 



3RbCl-2SbCl* 3RbBr-2SbBr 3 ,* 3RbI-2SbI„* 



3CsCl'2SbCl 3 .tt 



2 : 1 2NH 4 Cl-SbCL,t 2NH.Cl-SbCl,-H 9 0,n 2KClSbCl 3 ,§§ 



' 2KCl-SbCl,-2H 3 0.*** 

 7:3ftt YRbCl-3SbC]„** 7RbBr-3SbBr„* 7KCl-3SbCl,Jlt 



7KBr-3SbBr s -8H 2 0tJt 

 3:1 3NH 4 Cl-SbCl,-HH 9 0,tt [SKCl-SbCl.tJ], 3NaCl'SbCl,.tt 



4 : 1 4NH 4 I*SbI 3 -3H 9 0.t 



a Pogg. Ann., lxxxvii, 245 [1852]. 



* Wheeler, this Journal (3), xlvi, 269. f Schaffer, Pogg. Ann., cix, 611. 



% Deheraio, C. r., lii, 734. § Nickles, C. r., li, 1097. 



** Remsen and Saunders, Am. Chem. Jour., xiv, 152. 



ff Setterberg, Ofversigt K. Vetensk. Akad. Forhandl , 1882, 23 ; Remsen and 

 Saunders, loc. cit. 



X\ Poggiale, C. r., xx, 1180. It is probable according to Herty, Am. Chem. 

 Jour., xv, 81, that 3KCl'SbCl 3 does not exist. 



§§ Jacquelaine ; Poggiale, loc. cit.; Benedict, Proc. Am. Acad, xxix, 212. 



*** Benedict, ldc. cit. fff This type was described as 23 : 10; see Wells 



and Foote, this Journal, iii, 461. XXX Herty, loc. cit. 



Am. Jour. Sci.— Fourth Series, Yol. XI, No. 66 — June, 1901. 

 31 



