Spectroscopic and theoretical studies of arylmethylenemalonodinitriles. I. Electronic spectra was written by Kaneti, J.;Vitanov, D.;Yuchnovski, I.;Yuritsin, V.. And the article was included in Izvestiya po Khimiya in 1978.Quality Control of 2-(Anthracen-9-ylmethylene)malononitrile This article mentions the following:
The UV invisible absorption spectra of arylmethylene (aryl = substituted Ph, 1-naphthyl, 4-biphenylyl, 9-anthryl, etc.) of malonodinitrile are studied using PPP MO calculations The electronic spectra are similar to those of polyenes with the same mol. topol. The introduction of cyano groups in the conjugated system does not give rise to charge-transfer states. In the experiment, the researchers used many compounds, for example, 2-(Anthracen-9-ylmethylene)malononitrile (cas: 55490-87-4Quality Control of 2-(Anthracen-9-ylmethylene)malononitrile).
2-(Anthracen-9-ylmethylene)malononitrile (cas: 55490-87-4) belongs to nitriles. The electronic structure of nitriles is very similar to that of an alkyne with the main difference being the presence of a set of lone pair electrons on the nitrogen. Asymmetric bioreduction of nitriles is an attractive route to produce optically active nitriles as current metal-catalyzed hydrogenations tend to have low reactivity.Quality Control of 2-(Anthracen-9-ylmethylene)malononitrile
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts