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Formation and Reactivity of Gaseous Iron‐Sulfur Clusters
Author(s) -
Koszinowski Konrad,
Schröder Detlef,
Schwarz Helmut
Publication year - 2004
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200300480
Subject(s) - chemistry , reactivity (psychology) , sulfur , fourier transform ion cyclotron resonance , mass spectrometry , ion , lanthanide , atom (system on chip) , inorganic chemistry , crystallography , analytical chemistry (journal) , organic chemistry , medicine , alternative medicine , pathology , chromatography , computer science , embedded system
The gas‐phase reactions of Fe n + clusters, n = 1−6, with COS and CS 2 have been investigated by means of Fourier‐transform ion‐cyclotron resonance mass spectrometry. Whereas CS 2 predominantly substitutes one Fe atom, COS exclusively affords multiple sulfur transfer and thus opens a synthetic route to gaseous Fe n S x + clusters. In the final products such as Fe 2 S 2 + , Fe 3 S 2 + , and Fe 4 S 4 + , the sulfur atoms appear to occupy multiple coordination sites much like in the analogous biogeneous iron‐sulfur clusters. Bracketing experiments find IE (Fe 2 S 2 ) = 7.2±0.3 eV besides providing upper limits for IE (Fe 3 S 2 ) and IE (Fe 4 S 4 ). In accordance with the low IE (Fe 2 S 2 ), Fe 2 S 2 + does not activate H 2 or small hydrocarbons and only exhibits rather limited reactivity towards more reactive substrates. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)