RESUMO
A series of novel fluoroionophore bearing derivatives of benzo-15-crown-5 were synthesized by the amination of benzo-15-crown-5 followed by condensation with different quinones in the presence of titanium tetrachloride (TiCl4 ) and 1,4-diazabicyclo-[2.2.2]octane. The compounds were characterized by infrared, (1) H and (13) C nuclear magnetic resonance, mass spectroscopy and elemental analysis. Absorption and fluorescence spectral characteristics of these compounds were studied. It was observed that the anthraquinone derivative was acting as an Hg(2+) ion sensor.
Assuntos
Éteres de Coroa/química , Corantes Fluorescentes/química , Corantes Fluorescentes/síntese química , Iminas/química , Mercúrio/análise , Quinonas/química , Iminas/síntese química , Estrutura Molecular , Quinonas/síntese químicaRESUMO
In the title mol-ecule, C19H17F3N2O2, the fused cyclo-hexene and pyran rings adopt sofa and flattened boat conformations, respectively. The four essentially planar atoms of the pyran ring [maximum deviation = 0.008â (2)â Å] form a dihedral angle of 88.13â (9)° with the benzene ring. The F atoms of the trifluoro-methyl group were refined as disordered over three sets of sites in a 0.507â (7):0.330â (7):0.163â (3) ratio. In the crystal, mol-ecules are connected into inversion dimers via pairs of N-Hâ¯N hydrogen bonds and these dimers are further linked by N-Hâ¯O hydrogen bonds into a two-dimensional network parallel to (100).
RESUMO
The asymmetric unit of the title compound, C(25)H(31)NO(4), contains two independent mol-ecules. In one mol-ecule, the benzene ring and an attached meth-oxy group were refined as disordered over two sets of sites in a 0.65â (4): 0.35â (4) ratio. In both mol-ecules, the central ring of the acridinedione system adopts a flattened boat conformation. The four essentially planar atoms of this ring [maximum deviations = 0.006â (5)â Å in both mol-ecules] forms dihedral angles of 86.8â (2) and 87.6â (2)°, respectively, with the major and minor components in the disordered benzene ring and 87.3â (2)° with the benzene ring in the fully ordered mol-ecule. The two outer rings of the acridinedione system adopt sofa conformations in both mol-ecules. In the crystal, N-Hâ¯O hydrogen bonds form two independent chains along [100]. C-Hâ¯O hydrogen bonds link the chains, forming a three-dimensional network.