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FT-IR, 2H NMR, FAB mass spectrometry, and ion exchange chromatography were used to characterize structures in chromium acetate solutions prepared under several different conditions. Infrared and 2H NMR peaks for ionic, unidentate, bidentate, and bridging acetate
groups were assigned on the basis of chemical information and appearance/disappearance correlations. FAB mass spectrometry was used to confirm the existence of the cyclic chromium trimer in solution. Ion exchange chromatography allowed separation of the complexes based on ionic charge. Replacement
of acetate groups by hydroxyl groups causes ring opening and the formation of linear species. Many commercial chromium(III) acetates contain oxalate as well as acetate ligands.
Marathon Oil Company, 7400 South Broadway, Littleton, Colorado 80122
Publication date: March 1, 1989
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The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge. Previously published as Bulletin (Society for Applied Spectroscopy)