The mathematical treatment of coronoid hydrocarbons is a continuation of the authors' previous
book Kekulé Structures in Benzenoid Hydrocarbons (Lecture Notes in Chemistry, Vol. 46)…

The present monograph is a continuation of Cyvin SJ, Brunvoll J and Cyvin (1991c), a reference
to be found in Bibliography. Naturally, the previous volume is cited frequently here. For …

A coronoid is defined as a planar system of identical regular hexagons (no overlapping) with
one or more holes of a size not less thantwo hexagons. The numbers of coronoids with h (…

The gas-phase molecular structure of 2,2-bi-1,3-dithiole (tetrathiafulvalene) was determined
by electron diffraction and compared with the crystal molecular structure. A nonplanar “boat” …

The molecular structure of (C 5 H 5 ) 2 Co has been determined by gas phase electron
diffraction. The best agreement between calculated and experimental intensity curves is obtained …

The molecular structure of (C 5 H 5 ) 2 Mg has been determined by gas phase electron
diffraction. The best agreement between calculated and experimental intensity curves is obtained …

In the computerized enumerations and classifications of benzenoids the following cases are
distinguished:(i) specific generation of a class,(ii) recognition of the members of a class, and …

This paper describes a rather efficient algorithm that enumerates nonisomorphic geometrically
planar, simply connected polyhexes (hexagonal systems). It has been implemented in …

The molecular structure of decamethylferrocene, (η-C 5 Me 5 ) 2 Fe, has been determined by
gas phase electron diffraction. The FeC and C(Cp)C(Cp) bond distances, 2.064(3) and …

The results of enumerations and classifications of polyhexes are reviewed and supplemented
with new data. The numbers are collected in comprehensive tables and supplied with a …