Croatica Chemica Acta, Vol. 69 No. 3, 1996.
Izvorni znanstveni članak
Unbranched Catacondensed Polygonal Systems Containing Hexagons and Tetragons
Sven J. Cyvin
; Department of Physical Chemistry, The University of Trondheim, N-7034 Trondheim-NTH, Norway
Bjorg N. Cyvin
; Department of Physical Chemistry, The University of Trondheim, N-7034 Trondheim-NTH, Norway
Jon Brunvoll
; Department of Physical Chemistry, The University of Trondheim, N-7034 Trondheim-NTH, Norway
Sažetak
An algebraic solution for the isomer numbers of unbranched a-4-
catafusenes is presented. An a-4-catafusene is a catacondensed polygonal system consisting of exactly o: tetragons each and otherwise only hexagons. This analysis, which makes use of certain triangular matrices including the Pascal triangle, is a continuation of
a previous work on di-4-catafusenes. By serendipity, the problem
was reversed in the sence that the systems were considered as possessing '7 hexagons each and otherwise only tetragons. Under this
viewpoint the enumeration problem could be solved more directly
and led to explicit formulas. Finally, the resuIts are applied to catafusenes as a special case.
Ključne riječi
Hrčak ID:
177109
URI
Datum izdavanja:
1.11.1996.
Posjeta: 1.642 *