Malononitrile

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Polarographic determination of malononitrile.

A procedure is proposed for the determination of malononitrile by differential pulse polarography in methanolic 0.1M tetraethylammonium iodide/0.001M tetramethylammonium hydroxide as the supporting electrolyte. In this medium malononitrile is chemically converted into an electroactive species. With close control of timing of the steps in the procedure the error of the method is +/-1.5% in the c...

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2-(4-Nitro­benzyl­idene)malononitrile

In the title compound, C(10)H(5)N(3)O(2), the benzyl-idene-malono-nitrile unit is nearly planar, with a maximum deviation of 0.129 (2) Å for a terminal N atom; the nitro group is approximately coplanar with the benzene ring [dihedral angle = 8.8 (3)°]. An intra-molecular C-H⋯N hydrogen bond stabilizes the mol-ecular conformation.

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2-[4-(Benz­yloxy)benzyl­idene]malononitrile

In the title mol-ecule, C(17)H(12)N(2)O, the dihedral angle between the two benzene rings is 84.98 (10)°. The dicyano-ethyl-ene group is coplanar with the benzene ring to which it is bonded. No classic hydrogen bonds were found in the crystal.

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MNDO Studies on Malononitrile Dimerization

As a starting reagent in organic synthesis, malononitr i le-dicyanomethylene has an established posit ion because of its reactivity in the addi t ion, self addi t ion, and condensation reactions leading to various carbocyclic and heterocyclic systems [1]. The a im of our work is to investigate the reaction path of malononitrile dimerizat ion and the structure of the reaction product using q u a...

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(E)-2-(1,3-Diphenyl­allyl­idene)malononitrile

The title compound, C(18)H(12)N(2), adopts an E conformation with the benzyl-idenemalononitrile and phenyl groups located on opposite sides of the C=C bond. The two phenyl rings are oriented at a dihedral angle of 62.49 (7)°.

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ژورنال

عنوان ژورنال: Synlett

سال: 2004

ISSN: 0936-5214,1437-2096

DOI: 10.1055/s-2004-832822