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. Author manuscript; available in PMC: 2010 Mar 18.
Published in final edited form as: J Am Chem Soc. 2009 Mar 18;131(10):3416–3417. doi: 10.1021/ja807921k

Figure 1.

Figure 1

(a) Space filling plots showing the access to the binding site at the copper(II) center for the most common cyclam (1) configuration which is expected for the AMD3100 complex (left) and the folded configuration of the cross bridged complex (right) and (b) A ball and stick representation of the X-ray crystal structure of [Cu4(OAc)]PF6. Bond lengths in Å: Cu(1)-O(1) 1.946(2); Cu(1)-N(1) 2.190(3); Cu(1)-N(2) 2.143(3); Cu(1)-N(3) 2.044(3); Cu(1)-N(4) 2.095(3).