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The Redox Behaviour of the Family (C 60 )[Mo(CO) 2 (phen)(dbm)] n ( n = 1−3) − A Comparison with the Analog (η 2 ‐C 70 )[Mo(CO) 2 (phen)(dbm)] (phen = 1,10‐Phenanthroline; dbm = Dibutyl Maleate)
Author(s) -
Zanello Piero,
Laschi Franco,
Cinquantini Arnaldo,
Fontani Marco,
Tang Kaluo,
Jin Xianglin,
Li Lei
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(200006)2000:6<1345::aid-ejic1345>3.0.co;2-2
Subject(s) - chemistry , dbm , phenanthroline , redox , medicinal chemistry , stereochemistry , photochemistry , inorganic chemistry , optoelectronics , amplifier , physics , cmos
The electrochemical behaviour of the series (C 60 )[Mo(CO) 2 (phen)(dbm)] n ( n = 1−3) has been studied in dichloromethane solution. Each member of the family displays three reversible, fullerene‐centred, one‐electron reductions at potential values which linearly shift towards more negative potential values by 0.15 V for each appended molybdenum fragment. Such reduction processes are in turn followed by a metal‐centred reduction, which causes decomplexation of the C 60 ligand. EPR spectra recorded on the electrogenerated monoanions [(C 60 ){Mo(CO) 2 (phen)(dbm)} n ] − ( n = 1, 2) exhibit features indicative of some interaction between the electron entering the fullerene ligand and the metallic centre(s). Comparison with the redox behaviour of the C 70 ‐analog (C 70 )[Mo(CO) 2 (phen)(dbm)] reveals significant differences; namely that the C 70 ‐analog exhibits two reversible one‐electron reductions followed by a single two‐electron reduction, all of these reductions being centred on the fullerene ligand. A further cathodic step centred on the metallic fragment is present, which, also in this case, causes framework destruction releasing the C 70 ligand.