in benzene stirring of CoCl2*6H2O with a solution of pyridine in benzene; decanting of the benzenic solution; washing the solid residue with benzene, then extraction with cold CHCl3; pptn. of the product at evaporation of the CHCl3-solution;;

in pyridine; ethanol exists in solutions of waterfree CoCl2 in mixture-solutions of ethanol and pyridine;;

pyridine; 2,2-dimethoxy-propane in acetone excess of pyridine; crystn.;

in pyridine compound exists in solutions of CoCl2 in pyridine in equilibrium with (CoCl2(C5H5N)2);; examination of light-absorption;;