title: 1,3-Alternate calix[4]arene nitronyl nitroxide tetraradical and diradical: synthesis, X-ray crystallography, paramagnetic NMR spectroscopy, EPR spectroscopy, and magnetic studies.
abstract: Calix[4]arenes constrained to 1,3-alternate conformation and functionalized at the upper rim with four and two nitronyl nitroxides have been synthesized, and characterized by X-ray crystallography, magnetic resonance (EPR and (1)H NMR) spectroscopy, and magnetic studies. Such calix[4]arene tetraradicals and diradicals provide scaffolds for through-bond and through-space intramolecular exchange couplings.
authors: Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, USA.
authors: Andrzej
authors: A
authors: Rajca
authors: Maren
authors: M
authors: Pink
authors: Sumit
authors: S
authors: Mukherjee
authors: Suchada
authors: S
authors: Rajca
authors: Kausik
authors: K
authors: Das