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Cationic 2‐Azaallenylidene Complexes, Novel Compounds with Unusual Photochemical Properties
Author(s) -
Fischer Helmut,
Seitz Friedrich,
Riede Jürgen,
Vogel Jürgen
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.198501211
Subject(s) - cationic polymerization , chemistry , cleavage (geology) , metal , fluorescence , photochemistry , ligand (biochemistry) , crystallography , polymer chemistry , materials science , organic chemistry , optics , physics , biochemistry , receptor , fracture (geology) , composite material
[CNCR 2 ] ⊕ , a cation unknown in the free state , is present as terminal ligand bound to a metal in the salts 1 , MCr, W, RPh. On exposure to low‐energy radiation (λ>300 nm) the complexes 1 fragment with cleavage of CR 2 ; with exclusively short‐wave radiation, however, they are stable. The complexes 1 thus belong to the few compounds in which fluorescence from higher ecited states is observed.