Acidopentaaminecobalt(III) complexes with polyamine ligands. VIII. Kinetics of hydrolysis of .pi.-, .KAPPA.-, and .omega.-chloro(ethylenediamine)(diethylenetriamine)cobalt(III) and .alpha.- and .beta.-chloro(ethylenediamine)(dipropylenetriamine)cobalt(III) cations in aqueous acidic solution

Abstract

Acidopentaaminecobalt(III) Complexessquare-planar arrangement is more suitable than an octahedral arrangement for bonding,, then the contrasting behavior of octahedral systems and square-planar systems can be understood. Evidence in the form of MO calculations,11 spectroscopic studies,11'12 and the results presented here support point (1) above; the second and third points are well established.22 There does not seem to be a need for two theories (symbiosis and MO) to account for the contrasting behavior discussed above. It seems unlikely that any theory (22) L. D.

Solvent effects on the kinetics of aquation of ?-chloro(diethylenetriamine) (ethylenediamine)cobalt(III) ion in mixed aqueous solvents

“…The -configuration for the complex was 2ϩ confirmed by comparing its UV-visible absorption bands in 1 M HCl; max ϭ 518 nm (⑀ ϭ 89.4 ) and max ϭ 518 nm (⑀ ϭ 88.0 ) with the literature value [17]. Pure co-solvents acetone and ethanol of BDH quality were further redistilled.…”