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Platinum(II) Complexes with Non‐Innocent Ligands: Solid‐Phase Synthesis, Redox Chemistry and Luminescence
Author(s) -
Heinze Katja,
Reinhardt Sven
Publication year - 2008
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200801288
Subject(s) - chemistry , platinum , luminescence , electron paramagnetic resonance , cationic polymerization , deprotonation , photochemistry , diamagnetism , redox , radical , diimine , paramagnetism , inorganic chemistry , polymer chemistry , catalysis , organic chemistry , nuclear magnetic resonance , ion , materials science , physics , optoelectronics , quantum mechanics , magnetic field
Innocent or guilty? Catecholato–platinum(II) complexes with phenol‐substituted α‐diimine ligands are oxidised to the corresponding paramagnetic radical cationic complexes, as well as deprotonated to the corresponding base (see scheme). The radical cations are ortho ‐benzosemiquinoid in character (EPR spectroscopy). The diamagnetic anions can be described by para ‐iminoquinonoid resonance formulae and are luminescent at room temperature in fluid solution (static and time‐resolved emission).