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A Switchable Complex Ligand Exhibiting Photoinduced Valence Tautomerism
Author(s) -
Dai Jingwei,
Kanegawa Shinji,
Li Zhaoyang,
Kang Soonchul,
Sato Osamu
Publication year - 2013
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.201300531
Subject(s) - tautomer , chemistry , valence (chemistry) , ligand (biochemistry) , crystallography , crystal structure , solvent , cobalt , photochemistry , stereochemistry , inorganic chemistry , organic chemistry , biochemistry , receptor
The crystal of a valence tautomeric cobalt complex, [Co(dbbq) 2 (bpym)]( 1 ) (dbbq = 3,6‐di‐ tert ‐butyl‐1,2‐benzoquinone and bpym = 2,2′‐bipyrimidine), have been obtained by reaction between Co 2 (CO) 8 and dbbq in the presence of the ligand bpym in a mixed solvent under an N 2 atmosphere. The magnetic behavior of complex 1 clearly indicates that electron transfer from the catecholate ligand to the Co III center occurs, which results in valence tautomers of [Co II (SQ) 2 (bpym)] with a transition temperature ( T 1/2 ) of 232(1) K. Photomagnetic studies show that complex 1 exhibits photoinduced valence tautomerism. The complex has the ability to coordinate and can be used as a photoswitchable building block.