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Structural Studies of MCM‐48 Derivatized with (1,1′‐Ferrocenediyl)dimethylsilane
Author(s) -
Ferreira Paula,
Gonçalves Isabel S.,
Mosselmans Fred,
Pillinger Martyn,
Rocha João,
Thursfield Alan
Publication year - 2000
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/(sici)1099-0682(200001)2000:1<97::aid-ejic97>3.0.co;2-k
Subject(s) - chemistry , dimethylsilane , ferrocene , moiety , extended x ray absorption fine structure , adsorption , pentane , crystallography , inorganic chemistry , organic chemistry , absorption spectroscopy , physics , electrode , quantum mechanics , electrochemistry
The walls of the cubic mesoporous silicate MCM‐48 have been grafted with ferrocenyl end groups by a ring‐opening reaction of the ansa ‐bridged ferrocene [Fe{(η‐C 5 H 4 ) 2 SiMe 2 }], carried out in a pentane solution at room temperature. The orange product has been characterized by elemental analysis, powder X‐ray diffraction, 13 C and 29 Si solid‐state NMR, N 2 adsorption measurements, and Fe K‐edge EXAFS. A high loading has been obtained (8.18 mass % Fe) and, as a result of the inclusion of the organometallic moiety, the N 2 adsorption isotherm exhibits a lower uptake. Direct structural evidence for the surface attachment of both single ferrocenyl and short chain oligo(ferrocenyl) fragments has been obtained.