Chain versus dimer contacts in crystalline 5-(4-[N-tert-butyl-N-aminoxyl]phenyl)pyrimidine radicals: Choices among competing intermolecular exchange mechanisms

@inproceedings{Field2005ChainVD,
  title={Chain versus dimer contacts in crystalline 5-(4-[N-tert-butyl-N-aminoxyl]phenyl)pyrimidine radicals: Choices among competing intermolecular exchange mechanisms},
  author={Lora M. Field and Paul M. Lahti},
  year={2005}
}
Abstract 5-(4-[ N - Tert -butyl- N -aminoxyl]phenyl)pyrimidine crystallographically exhibits alternating chains and in-plane dimers involving two distinct molecular geometries, plus dimeric stacking of only one of the forms. Its magnetic behavior is neither fully spin pairing nor chain-like, but rather shows low temperature spin pairing for half of molecules in the unit cell with J / k  = (−)130 J/mol, consistent with dominating exchange behavior of the dimerically π-stacked form. The other… CONTINUE READING