Abstract
Abstract Cobalt(II), nickel(II), and copper(II) complexes with N-(9-fluorenyl)salicylideneaminates (abbreviated as X-sal-fl) have been examined in relation to the effect of steric condition on the structure of the metal complexes. Compounds of the type M(X-sal-fl)2 and their pyridine adducts were isolated as crystals. Complexes of the type Cu(X-sal-fl)Cl were also obtained. Both in the solid state and in non-donor solvents, the complexes Co(X-sal-fl)2 have a tetrahedral configuration, and Ni(X-sal-fl)2 and Cu(X-sal-fl)2 have a square-planar configuration. Possible structures of the pyridine adducts are discussed. The results indicate that the steric hindrance caused by fluorenyl is greater than that by diphenylmethyl.
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