Structural characterization of the nickel(II) formate complex, Ni(py)(4)(O2CH)(2)center dot 2py, and re-evaluation of the nitrate counterpart, Ni(py)(4)(ONO2)(2)center dot 2py: Evidence for non-linear nitrate coordination

摘要

The molecular structure of the nickel formate compound, Ni(PY)(4)(O2CF)(2)center dot 2py, has been determined by X-ray diffraction, thereby demonstrating that the formate ligand coordinates in a unidentate manner. A similar investigation of the nitrate compound, Ni(PY)(4)(O2CF)(2)center dot 2py, indicates that the nitrate ligand also coordinates in a unidentate manner; however, the Ni-O-NO2 bond angle is distinctly bent, in contrast to the linear geometry that was previously reported. (C) 2016 Elsevier Ltd. All rights reserved.