Two pillared metal-organic frameworks comprising a long pillar ligand used as fluorescent sensors for nitrobenzene and heterogeneous catalysts for the Knoevenagel condensation reaction was written by Ghasempour, Hosein;Azhdari Tehrani, Alireza;Morsali, Ali;Wang, Jun;Junk, Peter C.. And the article was included in CrystEngComm in 2016.HPLC of Formula: 55490-87-4 This article mentions the following:
Two new pillared Zn and Cd-organic frameworks were synthesized by incorporating two different organic linkers, 2-aminoterephthalic acid as an O-donor linker and N4,N4′-bis(pyridin-4-ylmethylene)-biphenyl-4,4′-diamine as a long pillaring strut. The structures of these two frameworks were analyzed using x-ray crystallog., FTIR spectroscopy, thermogravimetric and elemental analyses. Their structural features as well as their stability were studied. These two MOFs having the same organic composition and the same network topol. but different inorganic nodes differ in their chem. stability. Also, these two frameworks respond differently to nitrobenzene when they were used as fluorescent sensors. Furthermore, the catalytic behavior of one of these frameworks toward the Knoevenagel condensation reaction was studied. In the experiment, the researchers used many compounds, for example, 2-(Anthracen-9-ylmethylene)malononitrile (cas: 55490-87-4HPLC of Formula: 55490-87-4).
2-(Anthracen-9-ylmethylene)malononitrile (cas: 55490-87-4) belongs to nitriles. The R-C-N bond angle in and nitrile is 180° which give a nitrile functional group a linear shape. Both the carbon and the nitrogen are sp hydridized which leaves them both with two p orbitals which overlap to form the two π bond in the triple bond. Industrially, the main methods for producing nitriles are ammoxidation and hydrocyanation. Both routes are green in the sense that they do not generate stoichiometric amounts of salts.HPLC of Formula: 55490-87-4
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts