1 Electronic Supplementary Information Chimeric GNA/DNA metal-mediated base pairs Kristof Seubert, a Célia Fonseca Guerra, b F. Matthias Bickelhaupt* b and Jens Müller* a a) University of Muenster, Institute for Inorganic and Analytical Chemistry, Corrensstr. 28/30, 48149 Muenster, Germany. Fax: 49 251 8336007; Tel: 49 251 8336006; E-mail: mueller.j@uni- muenster.de b) Department of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling (ACMM), Scheikundig Laboratorium der Vrije Universiteit, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands. Fax: 31 20 5987629; Tel: 31 20 5987617; E-mail: f.m.bickelhaupt@vu.nl. Electronic Supplementary Material (ESI) for Chemical Communications This journal is © The Royal Society of Chemistry 2011