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4‐Ethynylpyridine as a Bridging Moiety in Mixed Rh/Re Complexes
Author(s) -
Zuo JingLin,
Biani Fabrizia Fabrizi de,
Santos Ana M.,
Köhler Klaus,
Kühn Fritz E.
Publication year - 2003
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.200390063
Subject(s) - chemistry , electron paramagnetic resonance , moiety , cyclic voltammetry , thermogravimetry , paramagnetism , spectroscopy , crystallography , stereochemistry , polymer chemistry , electrochemistry , inorganic chemistry , electrode , physics , nuclear magnetic resonance , quantum mechanics
A paramagnetic, dimeric Rh III Rh II complex of the formula [Rh 2 (form) 4 (C≡CC 5 H 4 N)] ( 1 ) [form = N , N′ ‐di‐ p ‐tolylformamidinate; C 5 H 4 N = pyridyl (py)] has been synthesized and used as starting material to prepare heterotrimetallic complexes of composition [Rh 2 (form) 4 (C≡Cpy){Re(CO) 3 (bipy)}][OS(=O) 2 CF 3 ] ( 2 ) and [Rh 2 (form) 4 (C≡Cpy){Re(CO) 3 ( t bu 2 bipy)}][OS(=O) 2 CF 3 ] ( 3 ). These complexes have been examined by vibrational spectroscopy, EPR spectroscopy, thermogravimetry and cyclic voltammetry. They are heat‐stable and can be handled in air without problems. The observed interactions between the Rh 2 and the Re subunits, however, are weak, and a significant charge transfer does not seem to take place. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)