Cobalt, chloropentaammine chloride

Purpureocobalt — see Cobalt, chloropentaammine-Purpureocobaltic chloride —see Cobalt, chloropentaammine-, chloride Pyridine, 2-hydroxy-5-methyl-dodecacobalt complexes, 168 Pyridine complexes linkage isomers, 186 Pyrimidine complexes... 

The black chloride is a lustrous crystalline solid. It is stable when perfectly dry. It cannot be dissolved in w ater (even at 0°) without decomposition to yield basic cobalt(II) chlorides. Treatment with concentrated hydrochloric acid yields [CoCU] " in solution, and neither the red isomer nor the chloropentaammine chloride can be obtained. If air is allowed to come in contact with basic solutions of the compound, oxidation to cobalt (III) ammines occurs. Treatment with concentrated ammonia solution (in a nitrogen atmosphere) sdelds [Co(NH3)6]. ... 

---