In the course of our investigations of the coordination chemistry of pyrazole ligands, we have systematically examined the variation in solid-state structure as a function of solvent choice, metal to ligand stoichiometric variation, and crystallization conditions.  Additionally we have been examining deliquescence and efflorescence of the resulting crystals.  This presentation will focus on the single crystal X-ray diffraction analyses of several nickel and cobalt complexes incorporating 3,5-dimethyl-1,2-pyrazole ligands.  This will include, but is not limited to: the monomeric six-coordinate nitratotetrakis(3,5-dimethyl-1,2-pyrazole)cobalt(II) nitrate monohydrate, the monomeric six-coordinate diaquatetrakis(3,5-dimethyl-1,2-pyrazole)nickel(II) nitrate, the monomeric six-coordinate diaquatetrakis(3,5-dimethyl-1,2-pyrazole)cobalt(II) chloride, and an asymmetric tetranitratotetrakis(3,5-dimethyl-1,2-pyrazole)di(cobalt(II)) dimer.

Once a nickel chemist, always a nickel chemist?

243rd National Meeting (2012)

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