Synthesis, characterization, and chemical transformation of di-imino-succinonitrile cobalt complexes; X-ray crystal structure of cyanobis(di-iminosuccinonitrile)cobalt

Abstract

The diamagnetic cobalt(II) complexes [Co-(C₄H₂N₄)₂L]₂(L = H₂O or Me₂SO), dimers of bis(diiminosuccinonitrile)cobalt(II), have been synthesized and transformed to the square-planar Co¹ complex [Co(C_4–H₂N₄)₂]^–, and the square-pyramidal Co¹¹¹ complexes [Co(Me)(C₄H₂N₄)₂] and [Co(CN)(C₄H₂N₄)₂]; the structure of the latter unusual compound was determined by single-crystal X-ray analysis.