The nuclear-spin selectivity of chemical reactions

The ability of spin-selective chemical reactions to sort nuclei in terms of two features – their spin and orientation – is discussed. The subdivision into spin (magnetic) and spin-free (nonmagnetic) nuclei constitutes the basis of the magnetic isotope effect; the subdivision of nuclei in terms of orientations and the establishment of the nuclear orientation constitute the content of second phenomenon – chemically induced [dynamic] nuclear polarisation. The bibliography includes 50 references.