Author/Authors :
Inoue، نويسنده , , S. and Mikami، نويسنده , , S. and Aso، نويسنده , , Y. and Otsubo، نويسنده , , T. and Wada، نويسنده , , T. and Sasabe، نويسنده , , H.، نويسنده ,
Abstract :
New donor-acceptor-substituted chromophores have been synthesized, in which 1,3-dithiol-2-ylidene and dicyanomethylene groups are linked by a heteroquinoid spacer. Spectroscopic and X-ray crystallographic analyses demonstrate that they involve resonance structures of a zwitterionic type depending on the central heteroquinoid moiety.
Keywords :
heterocycle synthesis , X-ray diffraction , UV-Vis-NIR absorption , Non-linear optical methods
