Direct ESR detection of S=3/2 states for nitrosyl iron complexes in FeZSM-5 zeolites

Authors
Volodin, AM Dubkov, KA Lund, A
Citation
Am. Volodin et al., Direct ESR detection of S=3/2 states for nitrosyl iron complexes in FeZSM-5 zeolites, CHEM P LETT, 333(1-2), 2001, pp. 41-44
Citations number
26
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
333
Issue
1-2
Year of publication
2001
Pages
41 - 44
Database
ISI
SICI code
0009-2614(20010105)333:1-2<41:DEDOSS>2.0.ZU;2-V
Abstract
The formation of paramagnetic complexes between Fe2+ ions and NO molecules with total spin S = 3/2 has been observed in FeZSM-5 zeolites. These comple xes exhibit a typical ESR signal with a component at g = 4.0 and are spectr oscopically similar to those observed in iron-containing enzymes. Such spin states of Fe ions have not been reported for heterogeneous catalysts. The application of NO as a spin probe for investigation of the state of low-val ence Fe ions in zeolite matrices is discussed. (C) 2001 Elsevier Science B. V. All rights reserved.