| Abstract
| - Carbenes of the type [AuX{C(NR1R2)(NHPy-2)}] (Py-2 = 2-pyridyl; X = Cl, C6F5, fluoromesityl, ½ octafluorobiphenyl, R2 ≠ H) are involved in intra- (R1 = H) or intermolecular (R1 ≠ H) hydrogen-bonding interactions, depending on the amine used in their synthesis. The intramolecular hydrogen bonds survive in an acetone solution. Except for X = fluoromesityl, the carbenes are luminescent, even those lacking aurophilic contacts.
- Isocyanide [AuX(CNPy-2)] (X = Cl, C6F5, fluoromesityl, ½ octafluorobiphenyl) and carbene [AuX{C(NR1R2)(NHPy-2)}] (R1R2NH = primary or secondary amines or ½ primary diamine) gold(I) complexes have been synthesized and characterized. For X = Cl, the carbene complexes show aurophilic interactions. The fragment NHPy-2, formed in the carbenes, can give rise to intra- (for primary amines) or intermolecular (for secondary amines) hydrogen bonds, depending on the amine used. These bonds and contacts have been studied in the solid state and in solution. The intermolecular hydrogen bonds are split in an acetone solution, but the intramolecular ones, which close a six-membered ring, survive in solution. Except for the fluoromesityl derivatives, the carbene complexes display luminescent properties.
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