Australian Journal of Chemistry · 1971 · 50 citations · 0 references
Natural SciencesChemistryPhysicsAnalytical ChemistryInorganic ChemistrySpectroscopyCoordination ChemistryCrystal ChemistryInorganic SpectroscopyStructural ElucidationStructure DeterminationTransition Metal ComplexesCoordination Compound CharacterizationCoordination Geometry DeterminationNuclear Quadrupole CouplingNuclear Quadrupole MomentsNuclear Quadrupole ResonanceSite Symmetry EffectsTetrahedral ComplexesTetrahedral Coordination
Halogen nuclear quadrupole resonance data are presented for a number of compounds containing tetrahedral ZnX42- ions, where X = Cl, Br, and I. Characteristic mean frequencies are: for 35Cl in ZnCl42- 8.9 MHz ; for 81Br in ZnBr42- 60 MHz; and for 127I in ZnI42- 75 and 150 MHz. The number and relative intensities of the resonances for any compound is found to be a useful indication of the site symmetry of the ZnX42- ion, and compounds of unknown structure are examined in this light. 35Cl data are also presented for Cs2CuCl4, which has a mean frequency of 10.6 MHz at 298°K.