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Updated: Jun 27, 2026

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
Published on: August 17, 2017
Trapped-molecule charge-transfer complexes with huge dipoles: M-C(2)F(6)-X (M = Na to Cs, X = Cl to I)
1Faculty of Science, UOIT, Oshawa, Canada ON L1H 7K4. fedor.naumkin@uoit.ca
Abstract:
Novel intermolecular complexes, with a small molecule sterically trapped between a pair of ions, are designed and characterized. The molecule is found to undergo minor shape distortions and to remain almost neutral, and the complexes to have very large dipole moments (up to approximately 40 D). The systems' stability, ion-molecule interaction and stored energy are investigated, and the vertical excitation, ionization and electron-attachment are described. Variations of geometry and of the above properties with the alkali-metal and halogen components are analysed as well.
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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,...

