Journal
ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY
Volume 71, Issue -, Pages 643-+Publisher
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S2053229615012140
Keywords
crystal structure; spectroscopic properties; dimeric copper(I) N-heterocyclic carbene complex; catalysis
Categories
Funding
- Fonds der Chemischen Industrie
- TUM Graduate School
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In recent years, the use of copper N-heterocyclic carbene (NHC) complexes has expanded to fields besides catalysis, namely medicinal chemistry and luminescence applications. In the latter case, multinuclear copper NHC compounds have attracted interest, however, the number of these complexes in the literature is still quite limited. Bis[mu-1,3-bis(3-tert-butylimidazolin-2-yliden-1-yl)pyridine]-1 kappa C-4(2), N:N,C-2 ';2 kappa C-4(2),N:N,C-2 '-dicopper(I) bis(hexafluoridophosphate), [Cu-2-(C19H25N5)(2)](PF6)(2), is a dimeric copper(I) complex bridged by two CNC, i.e. bis(N-heterocyclic carbene) pyridine, ligands. Each Cu I atom is almost linearly coordinated by two NHC ligands and interactions are observed between the pyridine N atoms and the metal centres, while no cuprophilic interactions were observed. Very strong absorption bands are evident in the UV-Vis spectrum at 236 and 274 nm, and an emission band is observed at 450 nm. The reported complex is a new example of a multinuclear copper NHC complex and a member of a compound class which has only rarely been reported.
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