Related Experiment Video
Updated: May 26, 2026

Thermochemical Studies of Ni(II) and Zn(II) Ternary Complexes Using Ion Mobility-Mass Spectrometry
Published on: June 8, 2022
Tris(pyridin-2-yl-methanol)nickel(II) hexa-fluoridophosphate trifluoro-acetate
Tomohiko Hamaguchi1, Tomoko Nagata, Satoshi Kawata
1Department of Chemistry, Faculty of Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
Abstract:
In the crystal structure of the title complex, [Ni(C(6)H(7)NO)(3)](PF(6))(C(2)F(3)O(2)), the Ni(II) ion is in a slightly distorted octa-hedral NiO(3)N(3) coordination geometry with each of the three N and three O atoms in a meridional coordination. In the crystal, the complex mol-ecules and the trifluoro-acetate anions are connected via O-H⋯O hydrogen bonding into layers parallel to the ab plane.
Related Concept Videos
Crystal Field Theory - Tetrahedral and Square Planar Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
EDTA: Chemistry and Properties

