Polarographic behavior of thiophene 5- and 4-nitro derivatives was written by Freidlin, G. N.;Glushkova, A. A.;Solop, K. A.. And the article was included in Zhurnal Analiticheskoi Khimii in 1979.Name: 4-Nitrothiophene-2-carbonitrile This article mentions the following:
The polarog. behavior of 20 2-substituted 4- and 5-nitrothiophene derivatives was examined A method is described for the simultaneous determination of isomers in binary and ternary systems in the 1 × 10-5-2 × 10-4 mol/L range. The derivatives can be presented as 2 series, which are described by Hammett equations for the E1/2 values. Best results are obtained during the polarog. determination of nitration products by using acetate buffer solution (pH 3.7) and 40% EtOH. The standard deviation is 2-8%. In the experiment, the researchers used many compounds, for example, 4-Nitrothiophene-2-carbonitrile (cas: 42137-24-6Name: 4-Nitrothiophene-2-carbonitrile).
4-Nitrothiophene-2-carbonitrile (cas: 42137-24-6) 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. In conventional organic reductions, nitrile is reduced by treatment with lithium aluminium hydride to the amine. Reduction to the imine followed by hydrolysis to the aldehyde takes place in the Stephen aldehyde synthesis, which uses stannous chloride in acid.Name: 4-Nitrothiophene-2-carbonitrile
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts