in perchloric acid Kinetics; investigation of redn. of Mn(H2O)6(3+) by various 2,2'-bipyridine or 1,10-phenanthroline complexes (resp. substituted derivatives) of Os(2+), Fe(2+) and Ru(2+) in stopped-flow apparatus at 25°C;; not isolated; react. is monitored by spectrophotometry;;

sodium chloride; palladium dichloride in sulfuric acid Kinetics; chloride ions (NaCl) oxidn. by manganese(III) in soln. at const. temp.; spectrophotometric monitoring;