Gunnar Brinkmann

Olaf Delgado-Friedrichs

Edward C. Kirby

Nico Van Cleemput

Here you will find all the azulenoids enumerated in the paper

G.Brinkmann, O.Delgado-Friedrichs, E. Kirby and N. Van Cleemput, A Catalogue of Periodic Fully-Resonant Azulene-Transitive Azulenoid Tilings Analogous to Clar Structures, Croat. Chem. Acta 82 (4), 2009, pp. 781-789 (link) or (direct link)

The azulenoids are available in two formats:

  • azulenoids.ds contains the Delaney-Dress symbols of the tilings
  • contains embedded representations of the tilings with marked azulenoids.

The file can be viewed using the program PGVisualizer. This program uses Java 5.0 and is available for Windows and UNIX (GNU Linux and Mac OS X).

A basic manual for the program PGVisualizer is also available: pgman.pdf.

There is also a short video available which demonstrates the basic functionality of PGVisualizer.

PGVisualizer is released under the GNU General Public License (GPL) with the following copyright notice

Copyright (C) 2008-2009 Universiteit Gent

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
General Public License for more details.

A copy of the GNU General Public License can be found in the file
LICENSE.txt provided with the source distribution of this program (see
the META-INF directory in the source jar). This license can also be
found on the GNU website at

If you did not receive a copy of the GNU General Public License along
with this program, contact the lead developer, or write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.

PGVisualizer uses the following open source software:

  • Ant contributions (at least version 1.0b2)
  • Apache Ant (at least version 1.6.5)
  • JCLOPS (at least version 0.8)
  • JDOM (at least version 1.0)
  • Jmol (at least version 11.4)
  • jReality (at least 2008-07-16 or later)
  • Launch4j (at least version 3.0.0-pre2 or later)
  • Nsis (at least version 2.0.6 or later)
  • Systre (at least version 1.1.5beta or later)

If you download any of these files, we would appreciate to receive an e-mail which lets us know that you have done so.

Last update: February 20, 2009