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The complex originally reported to be 'Cr 12 O 12 (pivalate) 15 ' has been examined by a number of spectroscopic techniques in order to elucidate the chromium valence states. By charge balance arguments, the complex could, for example, contain nine Cr(III) and three Cr(IV) centers, contain 11 Cr(III) and one Cr(VI) center or could possess three protons, not detected...
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