STRUCTURAL CHARACTERIZATION OF NICKEL(II) TETRAPHENYLPORPHYRIN

The structure of 5,10,15,20-tetraphenylporphinatonickel(II) ([Ni(tpp)] ) has been studied by both X-ray diffraction (powder and single-crysta l methods) and EXAFS. The bond lengths obtained from analysis of the E XAFS agree, within standard deviations, with those obtained from the X -ray diffraction studies. The Ni-N bond length of 1.93(1) Angstrom agr ees especially well with the value of 1.931(2) Angstrom obtained from the single-crystal analysis. The powder X-ray diffraction pattern, col lected by using synchrotron radiation, is presented.