The cobalt(II)-triethylenetetramine system in acetonitrile solution. A nitrogen-14 magnetic resonance and spectrophotometric study

Abstract

A nitrogen-14 magnetic resonance and spectrophotometric study of the cobalt(11)-triethylenetetramine (trien) system in acetonitrile solvent indicates the presence of the predominant species Co(CH₃CN)₆²⁺ Co(trien)(CH₃CN)_n²⁺ where n = 1 or 2, Co₂(trien)₃⁴⁺, and Co(trien)₂²⁺ in solution. The lability of CH₃CN in the first coordination sphere is shown to be > 10³ times that of CH₃CN in the first coordination sphere of CO(CH₃CX)₆²⁺ at 258 K.