Aquabis(3-methyl-4-octanoyl-1-phenyl-5-pyrazolonato-O,O')zinc(II) and Bis(ethanol-O)bis(3-methyl-1-phenyl-4-stearoyl-5-pyrazolonato-O,O')cadmium(II)

The structures of the zinc and cadmium complexes of 4-acyl-3-methyl-1-phenyl-5-pyrazolones, [Zn(C₁₈H₂₃N₂O₂)₂(H₂O)] and [Cd(C₂₈H₄₃N₂O₂)₂(C₂H₆O)₂], show remarkable differences. In the case of zinc the coordination number is five and a square pyramidal structure was found, which is realised by the coordination of one molecule of water in the apical position. The coordination polyhedron is significantly distorted towards a trigonal-bipyramidal arrangement. The cadmium compound contains two coordinated ethanol molecules and is octahedral.

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