Description:
Appendix A. Supplementary data
CCDC #1588031–1588035 contains the supplementary crystallographic data for compounds 4, 5, 3, 6, and 1, respectively. These data can be obtained free of charge via http://www.ccdc.cam.ac.uk/conts/retrieving.html, or from the Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, UK; fax: (+44) 1223-336-033; or e-mail: deposit@ccdc.cam.ac.uk.