Addition Complexes of Tetrais(t-Butylisocyanide)Cobalt(II) Perchlorate with Nitrogen Bases

Abstract

Reaction of [Co(CNCMe₃)₄(H₂O)](C10₄)₂ with selected aromatic and cyclic aliphatic amines and thioureas, either by dissolution or digestion, leads to complexes of the form [Co(CNCMe₃)₄L₂](C10₄)₂.nH₂O; L = C₅H₅N, 3-MeC₅H₄N, 4-MeC₅H₄N, C₉H₇N, C₅H₁₀NH, 3-MeC₅H₉NH, 4-MeC₅H₉NH, HN(CH₂CH₂)₂O, H₂NC(S)NH₂, EtHNC(S)NHEt. Steric hindrance decreases reactivity of the amine and stability of the complex. Characterization by IR, diffuse reflectance electronic spectra, and magnetic susceptibility suggests tetragonal coordination.

Key Words:

• Alkylisocyanide
• cobalt(II) complexes
• addition complexes
• nitrogen bases