We have synthesized and characterized a series of late first-row transition-metal complexes coordinatedto a family of β-diketoamine ligands having the general formula M[C6H5COCHC(NHR)CH3]2 where M = Co2+, Ni2+, Cu2+, or Zn2+ and R = CH2CH3 or CH2C6H5. The compounds discussed include two polymorphs of a four-coordinate nickel compound, Ni[C6H5COCHC(NHCH2CH3)CH3]2, previously reported to undergo a temperature-driven conversion from planar to tetrahedral in the solid state upon heating. These compounds had not been previously studied in the solid state using X-ray diffraction. We have characterized the series of compounds via Single Crystal X-ray diffraction (SC-XRD) and monitored the temperature-driven solid-state conversion of the nickel polymorphs using Powder X-ray diffraction.

Temperature-Driven geometric conversion of solid-state polymorphs of a four-coordinate nickel(II) complex

253rd National Meeting (2017)

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