Premium
57 Fe NMR spectroscopy of ferrocenes bearing π‐acceptor substituents
Author(s) -
Wrackmeyer Bernd,
Tok Oleg L.,
Ayazi Anahid,
Maisel Heidi E.,
Herberhold Max
Publication year - 2004
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1401
Subject(s) - chemistry , ferrocene , substituent , acceptor , nuclear magnetic resonance spectroscopy , group (periodic table) , crystallography , spectroscopy , stereochemistry , organic chemistry , electrochemistry , physics , electrode , quantum mechanics , condensed matter physics
Ferrocene derivatives bearing π‐acceptor substituents in 1‐ or 1,1 ′ ‐positions such as carbonyl group(s) ( 1 , 2 ), a sulfinyl group ( 4 ) or boryl group(s) ( 5 , 6 , 9 ) and related [3]ferrocenophanes ( 3 , 7 , 10 , 12 , 13 ) and a [4]ferrocenophane ( 8 ) were studied by 57 Fe NMR spectroscopy. The deshielding effect of the respective π‐acceptor substituent can be partially or fully compensated by distortion of the ferrocene geometry. Both aspects become apparent by comparing δ 57 Fe data of the [ n ]ferrocenophanes with those of related non‐cyclic derivatives. Copyright © 2004 John Wiley & Sons, Ltd.