Synthesis, mol-ecular and crystal structures of 4-amino-3,5-di-fluoro-benzo-nitrile, ethyl 4-amino-3,5-di-fluoro-benzoate, and diethyl 4,4'-(diazene-1,2-di-yl)bis-(3,5-di-fluoro-benzoate).

ABSTRACT: The crystal structures of two inter-mediates, 4-amino-3,5-di-fluoro-benzo-nitrile, C₇H₄F₂N₂ (I), and ethyl 4-amino-3,5-di-fluoro-benzoate, C₉H₉F₂NO₂ (II), along with a visible-light-responsive azo-benzene derivative, diethyl 4,4'-(diazene-1,2-di-yl)bis-(3,5-di-fluoro-benzoate), C₁₈H₁₄F₄N₂O₄ (III), obtained by four-step synthetic procedure, were studied using single-crystal X-ray diffraction. The mol-ecules of I and II demonstrate the quinoid character of phenyl rings accompanied by the distortion of bond angles related to the presence of fluorine substituents in the 3 and 5 (ortho) positions. In the crystals

SUBMITTER: Novikov EM 

PROVIDER: S-EPMC11299740 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature