Chemistry of cyclopentadienyliron dicarbonyl dimer and ferrocene in zeolite Y cavities: Anchoring organometallic fragments into microporous solids

Journal Article · Thu Jun 01 00:00:00 EDT 1989 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100348a034· OSTI ID:7025532

Moller, K; Borvornwattananont, A; Bein, T ^[1]

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1. Univ. of New Mexico, Albuquerque (USA)

The intracavity chemistry of (CpFe(CO){sub 2}){sub 2} (1) and ferrocene in different acid forms of zeolite Y has been studied with EXAFS, in situ FTIR, and TPD-MS spectroscopies. Depending on the stoichiometry of zeolite protons vs the amount of starting complex 1, the complex is either oxidatively cleaved into CpFe(CO){sub 3}{sup +} (2) and CpFe{sup +} coordinated to the zeolite, or protonated to form dimeric (CpFe(CO){sub 2}){sub 2}H{sub +} (3). It is shown that the stability of all complexes is influenced by the intracavity concentration of the zeolite-bridged hydroxyl groups. The cationic monomer 2 is stable up to 500 K in the highly acidic zeolite host, whereas the protonated dimer decomposes above 400 K. At higher temperatures, all carbonyl ligands are split off from the iron complexes, and the remaining dominant fragments are identified as CpFe(OZ){sub n} (n = 2-3), bonded to the zeolite host structure via oxygen coordination. Similar fragments are formed upon thermal decomposition of ferrocene in the zeolite.

• OSTI ID: 7025532
• Journal Information: Journal of Physical Chemistry; (USA), Vol. 93:11; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
FERROCENE
PHYSICAL CHEMISTRY
IRON CARBONATES
CAVITIES
DATA ANALYSIS
EXPERIMENTAL DATA
MEASURING INSTRUMENTS
MEASURING METHODS
ORGANOMETALLIC COMPOUNDS
SOLIDS
ZEOLITES
CARBON COMPOUNDS
CARBONATES
CHEMISTRY
COMPLEXES
DATA
DIENES
HYDROCARBONS
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IRON COMPLEXES
IRON COMPOUNDS
MATERIALS
MINERALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLYENES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
360102* - Metals & Alloys- Structure & Phase Studies
400201 - Chemical & Physicochemical Properties