A Meso Cobalt (II) Complex Derived from Cobalt (II) Salt and N‐ (2‐pyridyliene)‐2‐pyrimidylamine: Synthesis and Characterization

A meso cobalt(II) complex, [Co(II) L2L2′] · 4.25H2O, has been synthesized from heterocyclic Schiff‐base ligand N‐ (2‐pyridyliene)‐2‐pyrimidylamine (L1) with inorganic cobalt(II) Salt, and its coordination of chemistry has also been investigated. Carmine block crystals of [Co(II) L2 L2′] · 4.25H2O were obtained from the filtrate which was resulted from the addition of a hot alcohol solution of N‐ (2‐pyridyliene)‐2‐pyrimidylamine (L1) into the alcohol solution of the CoCl2 · 6H2O. Single‐crystal X‐ray diffraction analysis indicates that it crystallizes in a trigonal system with space group R‐3c, with a=24.820(4), b=24.820(4), c=21.010(4) A, α=90°, β=90°, γ=120°, V=11209(3) A3, Z=36, Mr=533.413, F(000)=5060, Dc=1.439 g/cm3, μ(MoKα)=0.742 mm−1, R=0.0666, and wR2=0.2734 for 2229 reflections with I>2σ (I). The Co atom is coordinated in a elongated octahedral geometry by two O atoms, which produced by partial hydrolysis of N‐ (2‐pyridyliene)‐2‐pyrimidylamine (L1), and four N atoms, among which two N atoms were f...