in water complex and CuCl stirred with water at 50-80°C for 2 h; filtered, washed with water, 6 M aq. HCl, THF and Et2O, dried in vac.;

in ammonia byproducts: Na2SO4; aq. NH3; under Ar; concd. aq. NH3 added to mixt. of CuSO4*5H2O, Cu and NaB(CN)4; stirred for 2 h; volatiles removed under reduced pressure; solid washed with 10percent HCl; dried in vac.; elem. anal.;