TY - JOUR AU - Maki, Nobufumi AB - November, 1965] NOTES 2013 A New Cobalt(III) Complex : K[Co(CN)2dg2] - 3/2 H20 By Nobufumi MAKI (Received April 9, 1965) The dicyano-bis (dimethylglyoximato) cobalt- ate(III) complex, K[Co111(CN) 2dgzl . 3/2 H2O,') has been prepared, and its absorption spectrum compared with those of the related dicyano- During the course of the reaction, an in- cobalt(III) complexes. soluble yellow matter was deposited. These A solution (200 ml.) containing 13.7g. of crystalline deposits were eliminated from the solution quickly while it was in a hot state. potassium cyanide was mixed with a solution of 50g. of bis(dimethylglyoximato)diammine- These insoluble orange yellow crystals are cobalt(III) chloride, '[Co dg2(NH3)2]Cl.5H2O,2) probably tris (dimethylglyoximato) cobalt (III), under continuous stirring, and then heated on [Co (dgH) 3],3) formed from the rupture of the a water bath until the reaction mixture was hydrogen bonding due to the alkalinity of the evaporated to one-third of its former volume. cyanide solution. From the smell of the ammonia evolved, it After cooling, the lusterous silky yellow could be discerned that the following mild crystals which had been deposited were filtered reaction was in progress : and washed with cold 85% ethanol and ether. 1) N. Maki, Nature, 188, 227 (1960). 3) TI - A New Cobalt(III) Complex : K[Co(CN)2dg2]ยท3/2 H2O JO - Bulletin of the Chemical Society of Japan DO - 10.1246/bcsj.38.2013 DA - 2006-03-27 UR - https://www.deepdyve.com/lp/oxford-university-press/a-new-cobalt-iii-complex-k-co-cn-2dg2-3-2-h2o-gIjzdnIy54 SP - 2013 EP - 2015 VL - 38 IS - 11 DP - DeepDyve ER -