14148-42-6Relevant articles and documents
Design of receptors for urea derivatives based on the pyrido[3,2-g]indole subunit
Hegde, Vidyadhar,Hung, Chi-Ying,Madhukar, Puttannachetty,Cunningham, Raymond,H?pfner, Thomas,Thummel, Randolph P.
, p. 872 - 878 (1993)
The Fischer cyclization of appropriate 8-quinolinylhydrazones was employed to prepare a series of cavity-shaped hosts consisting of a central pyridine ring appended in either the 2,6- or 3,5-positions by two pyrido[3,2-g]indole subunits. The pyridine and
PHOTOCHROMIC HYDRAZONE SWITCHES
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Paragraph 00217, (2018/05/24)
Provided herein are compounds for use as photochromic molecular switches having very long thermal isomerization half-lives and switchable fluorescence properties both in solution and the solid state.
A trivalent cobalt complex with the new redox-active ligand 10-(8-quinolylazo)-9-phenanthrol (qapl)
Taylor, Robin A.,Bonanno, Nico M.,Mirza, Danyal,Lough, Alan J.,Lemaire, Martin T.
, p. 34 - 39 (2017/05/19)
In this work, we describe the two-step synthesis of a new quinoline substituted arylazo ligand bearing a phenanthrol substituent 1 (qapl). This new ligand does not exhibit keto/enol tautomerization in solution as does papl, a structurally related arylazo ligand. Qapl can be reduced quasi-reversibly suggesting that the formed radical anion features better stability than the radical formed from papl. Density functional theory calculations indicate highly π-delocalized frontier orbital levels with large π-antibonding coefficients on the azo N atoms in the LUMO. Coordination of qapl to CoCl2 produced a trivalent cobalt complex 2 and single crystal X-ray diffraction studies revealed a six-coordinate cobalt(III) ion with the tridentate qapl ligand binding through quinoline N, azo N and phenanthrol O donor atoms. The electronic structure of 2 is shown to be similar to related complex [Co(papl)2]+ and DFT calculations confirm low energy absorptions bands to feature mostly ligand centered transitions with some LMCT character mixed in.