[obsolete] [obsolete]Association between a base and its conjugate acid through a hydrogen bond (B
... HB+
or AH
... A−).
Homoassociation is a more appropriate term for this phenomenon.
The orbital overlap of two π-systems separated by a non-conjugating group, such as CH2.
Transformed and rewritten from PDF version (entry
http://www.iupac.org/goldbook/H02842.pdf)
by: Miloslav Nic, Jiri Jirat, Bedrich Kosata, ICT Prague, Czech Republic