. 2014 Apr 22;19(4):5028–5087. doi: 10.3390/molecules19045028
© 2014 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
Figure 19.
Examples of ligands with extended π-systems.