Preferred Label : Kasha rule;
IUPAC definition : Polyatomic molecular entities luminesce with appreciable yield only from the lowest
excited state of a given multiplicity. There are exceptions to this rule.;
Scope note : the concept has been extended to the reaction of excited species, i.e., polyatomic
molecular entities react with appreciable yield only from the lowest excited state
of a given multiplicity.;
Origin ID : K03370;
See also
Polyatomic molecular entities luminesce with appreciable yield only from the lowest
excited state of a given multiplicity. There are exceptions to this rule.
