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Vol.
25 No. 2
March-April 2003
Nomenclature
of Regular Single-Strand Organic Polymers
(IUPAC
Recommendations 2002)
by
J. Kahovec, R. B. Fox, and K. Hatada
Pure
and Applied Chemistry,
Vol. 74, No. 10, pp. 1921-1956 (2002)
The
rules described here of structure-based nomenclature for regular
single-strand organic polymers are of fundamental importance.
The names of other kinds of polymers such as double-strand
and irregular polymers are based on the principles given in
this document. In concept, a generic name for the polymer
(ABC)n is poly(ABC), in which (ABC) is a constitutional repeating
unit (CRU) representing the chemical structure of the polymer
chain, and A, B, and C are the subunits (SUs) that comprise
the CRU. To provide a unique and unambiguous name, rules are
given to identify the preferred CRU and to name it using the
names of A, B, and C based on current organic nomenclature.
The CRU consists of one or more divalent or substituted SUs,
from which the structurebased name poly(SU1-SU2-SU3-
. . .) is derived. Special rules of seniority for various
types of subunits determine at which subunit to start and
in which direction to continue citing subunits in the CRU
of the polymer. Provisions are made for naming end groups
of the polymers and the polymer substituents. In addition,
the document contains a glossary of concepts and definitions,
a list of common subunit names, and a variety of examples
of structure-based polymer names. The document is a revision
of the 1975 rules, but the new rules do not represent any
change in principles. The new rules involve mainly rearrangement
of the material, a generalization of basis rules, a clearer
presentation, an avoidance of manifold repetition of the same
principles at various places, and the use of graphical means
for the visualization of the principles.
(Example
names of some regular single-strand organic polymers)
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