This topic was also presented as a Talk: see the long abstract and the slides (DOI: 10.3247/SL4Nmr12.005).
 

Short abstract

This presentation conjectures and defends the idea of the existence of persistent electron current loops in diamagnetic molecules whose structures make it possible, from a purely geometric point of view, to associate a fixed axial vector with them (example: all molecules of the type O=C(XY), where X,Y are distinct atoms or groups). If the insight is correct then such molecules should possess an intrinsic spin and a permanent magnetic moment, thus enabling magnetic resonance phenomena similar to those associated with nuclides and giving birth to Molecular Magnetic Resonance (MMR). There is also a good chance that the overlooked persistent electron current loops represent a factor which presently hinders a forward leap of quantum chemistry methods such as DFT.

Please, cite this online document as:
Sykora S.,
   Molecular Spins: a new Frontier of Chemical Physics and Magnetic Resonance?,
   Poster at 53rd ENC, Miami, April 15-20, 2012, DOI: 10.3247/SL4Nmr12.004.

Discussions

Your comments are welcome and will appear here