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Extremely Long‐Wavelength Charge‐Transfer Absorptions of Binuclear Complexes with Azo‐Modified 2,2′‐Bipyridyl Ligands
Author(s) -
Kohlmann Stephan,
Ernst Sylvia,
Kaim Wolfgang
Publication year - 1985
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198506841
Subject(s) - chemistry , chelation , charge (physics) , wavelength , metal , acceptor , photochemistry , infrared , crystallography , inorganic chemistry , materials science , organic chemistry , physics , optoelectronics , optics , quantum mechanics , condensed matter physics
Intense charge‐transfer absorptions at wavelengths up to the near‐infrared region (700–950 nm) are exhibited by binuclear complexes such as 1 and 2 , which contain the low‐spin d 6 metal‐complex fragments Mo(CO) 4 , W(CO) 4 , Mn(CO) 3 Br, and [Ru(bpy) 2 ] 2⊕ . This is due to very low lying π‐acceptor levels of the heteroarene ligands and to the chelation.