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Heterometallic Ferrocene‐Rhenium Complexes Linked by an Aminoethylglycine Scaffold
Author(s) -
Levine Lauren A.,
Kirin Srećko I.,
Myers Carl P.,
Showalter Scott A.,
Williams Mary Elizabeth
Publication year - 2009
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.200800865
Subject(s) - chemistry , ferrocene , rhenium , moiety , electrochemistry , yield (engineering) , cyclic voltammetry , mass spectrometry , redox , polymer chemistry , fourier transform infrared spectroscopy , nuclear magnetic resonance spectroscopy , inorganic chemistry , nuclear chemistry , medicinal chemistry , organic chemistry , electrode , chemical engineering , materials science , chromatography , engineering , metallurgy
Using mono‐ and 1, n ′‐disubstituted ferrocenecarboxylic acid, the aminoethylglycine (aeg) derivatives Fe[C 5 H 4 ‐CO‐aeg‐O t Bu][C 5 H 5 ] ( 1 ) and Fe[C 5 H 4 ‐CO‐aeg‐O t Bu] 2 ( 2 ) have been synthesized. Complexes 1 and 2 are further reacted to substitute the aeg with the nitrogen‐containing ligands dpa‐ph‐CO 2 H or py‐AcOH to yield complexes 3 – 6 . Each of these is treated with Re(CO) 5 Cl to assemble heterometallic structures 3 Re – 6 Re . These are subsequently isolated and characterized by NMR and mass spectrometry, FTIR, UV/Vis absorbance, and fluorescence emission spectroscopy, and separately by electrochemistry. All of the compounds exhibit the characteristic redox properties of the ferrocene moiety; in the heterometallic compounds, an irreversible oxidative wave is attributed to the Re. The electrochemically determined diffusion coefficients of the compounds confirm that the as‐prepared structures are discrete assemblies and not coordination polymers.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)