Binding of O2 and CO to Metal Porphyrin Anions in the Gas Phase

The binding energies of O2 and CO to iron(II) and manganese(II) porphyrin anions has been determined in the gas phase. Low‐pressure ion–molecule equilibria have been measured in a cryogenically cooled trap of an FT‐ICR mass spectrometer, and binding energies of (40.8±1.3) kJ mol−1 and (66.3±2.6) kJ ...

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Veröffentlicht in:	Angewandte Chemie International Edition 2013-09, Vol.52 (39), p.10374-10377
Hauptverfasser:	Karpuschkin, Tatjana, Kappes, Manfred M., Hampe, Oliver
Format:	Artikel
Sprache:	eng
Schlagworte:	Anions - chemistry Binding Sites biophysical chemistry Carbon Monoxide - chemistry ferrous heme complexes gas-phase ion chemistry Gases - chemistry Iron - chemistry Manganese - chemistry mass spectrometry Metalloporphyrins - chemistry Models, Molecular Oxygen - chemistry oxygen binding
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Zusammenfassung:	The binding energies of O2 and CO to iron(II) and manganese(II) porphyrin anions has been determined in the gas phase. Low‐pressure ion–molecule equilibria have been measured in a cryogenically cooled trap of an FT‐ICR mass spectrometer, and binding energies of (40.8±1.3) kJ mol−1 and (66.3±2.6) kJ mol−1 have been obtained for oxygen and carbon monoxide, respectively, with a heme‐analogue FeII porphyrin complex.
ISSN:	1433-7851 1521-3773
DOI:	10.1002/anie.201303200