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. Author manuscript; available in PMC: 2010 Jan 16.
Published in final edited form as: J Org Chem. 2009 Jan 16;74(2):730–738. doi: 10.1021/jo8021132

Figure 1.

Figure 1

Dirhodium (II,III) caprolactamate visible spectrum as a function of time (1, 3, 5, and 7 h): TBHP (0.27 M) in DCE with 1.0 mol % Rh2(cap)4 without olefinic substrate. Note that dirhodium (II,III) caprolactamate (λmax 507 and 974 nm) is clearly visible even after 5 h and that dirhodium (II,II) caprolactamate (λmax 607 nm) becomes visible as the reaction proceeds.