## Abstract An algorithm is developed for generating and characterizing carcinogenic catacondensed benzenoid hydrocarbons. The bay regions in these structures are identified by a technique that we developed at Johns Hopkins. Using the three‐digit code proposed by Balaban, and the concept of ring ad
Computer enumeration and generation of benzenoid hydrocarbons and identification of bay regions
✍ Scribed by J. V. Knop; K. Szymanski; Z̃. Jeric̃ević; N. Trinajstić
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- English
- Weight
- 767 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0192-8651
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✦ Synopsis
Abstract
A computer‐oriented algorithm is developed for enumerating and generating all rigorously planar benzenoid hydrocarbons. An additional algorithm is also developed for identification and enumeration of carcinogenic bay regions. The results are reported for undisrupted benzenoid structures up to ten fused rings. The reported numbers of isomeric benzenoids do not agree with the results in the literature, because other authors included in their considerations some polyhexes which are not strictly planar structures (e.g., helicenes) or which represent rings of hexagons (e.g., circulenes). The reported results for enumeration of bay regions fully agree with those of Balasubramanian et al.
📜 SIMILAR VOLUMES
The enumeration of benzenoids is studied with the aid of different modifications of a computer program. Known values for the number of cata-condensed and of all benzenoids with h (number of hexagons) up to eight are reproduced. These benzenoids are classified into (a) unbranched of different symmetr
A computer-oriented method for the enumeration and generation of physical trees is presented. Physical trees depict acyclic chemical structures, but the term physical is used to stress the process by which the structures are produced.
## Abstract A novel efficient computer‐oriented approach, based on the DAST (dualist angle‐restricted spanning tree) code, is introduced for enumeration and generation of planar polyhex hydrocarbons. It is much faster than other approaches in the literature. The numbers of planar polyhex hydrocarbo