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. Author manuscript; available in PMC: 2009 Feb 4.
Published in final edited form as: Inorg Chem. 2007 Dec 29;47(3):1053–1066. doi: 10.1021/ic701920v

Figure 3.

Figure 3

Selected region of ESI mass spectra of 3, 3(17,18O), 4, and 4(17,18O) (top to bottom, respectively). Additional peak intensities are shown at (m + 1)/z and (m + 2)/z in spectra of isotopically labeled samples.