71 



R/iomhic-fii.pi/rainid/ii. 

 a : /; : ,■ 1= ().85(i9 : 1 : 2.7751, 



Racemic Triethylenediamine- 

 Cobaltiperchlorate. 



Observed Forms-, e ^ \00l\. large and lustroiiy, in most cases 

 striated parallel to tlie intersection: c : </ ; r = jl02j, o^\li.l\ and 

 q=\01i\, about eqnallj largely developed; commonly q gives the 

 better, r tlie feebler images. Finally again: .s^jlOlj. narrow, but 

 easily measurable. The habit is tabular parallel to jOOlj, with a 

 slight elongation parallel to the 6-axis. 



(■:.s =(102):(101)= 14 38 14 36 



On |001| the extinction is perpendicular and parallel with respect 

 to the intersections c : /■ and c : i/. The plane of (he optical axes is 

 jOlOj ; the ci'ystals are distinctly dicliroitic, namely orange for 

 vibrations parallel to the plane of the optical axes, orange-yellow 

 for such as are perpendicular to it. 



The specific weight of the crystals at 25°.l C. was : (/g^ = J.878; 

 the molecular volume is thus: 572.72 



Topical parameters:-/ : i|- : w = 5.3314 : 6.2217 : 17.266(1. 



A' V. J)e,rtro(/;/r/itori/ Lii/eo- Trietkiilenedlamiiie- Cobalti-jicrc/dorate. 



Formula: ji^'o (Aeiii).,i (Cl(3j,. 



The compound was prepared by (rausformatiou of the (/-bromide 

 by means of a soluliou of silver-perchlorate. The salt crystallizes 

 from ils aqueous solution in the sha|)e of flat, brownish-red, veiy 



