Charge Localisation in Heavy Alkali Metal Ion Complexes of 4,4′-Biphenyldicarboxylate*

@article{Harrowfield2016ChargeLI,
  title={Charge Localisation in Heavy Alkali Metal Ion Complexes of 4,4′-Biphenyldicarboxylate*},
  author={J. Harrowfield and P. Thu{\'e}ry},
  journal={Australian Journal of Chemistry},
  year={2016},
  volume={69},
  pages={505-511}
}
Crystal structure determinations on the isomorphous RbI and CsI complexes of 4,4′-biphenyldicarboxylate have shown the carboxylate entities to be coordinated in an unusual fashion where both oxygen atoms are in a tetrahedral environment indicative of negative charge localisation on each. The metal ions also show a highly irregular form of six-coordination, while the biphenyl units are planar, seemingly as a result of attractive interactions between the ortho hydrogen atoms. 
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