Preparation and physicochemical study of copper(II) and nickel(II) chelates with aroylhydrazones of 1-methyl-2-acylbenzimidazole was written by Lukov, V. V.;Abramova, N. A.;Kogan, V. A.;Anisimova, V. A.;Starikova, A. G.;Bondarenko, G. I.. And the article was included in Zhurnal Neorganicheskoi Khimii in 1988.SDS of cas: 3012-80-4 This article mentions the following:
I (R = H, Me; R1 = H, p-MeO, m-NO2, p-Me2N) was prepared from the corresponding 1-methyl-2-acylbenzimidazole and H2NNHC(O)C6H4R1. M(OAc)2 (M = Cu, Ni) reacted with I (HL) to give ML2. CuX2 reacted with I to give CuLX (X = Cl, R = H, R1 = H, m-NO2, p-NMe2; X = Cl, Br, R = Me, R1 = p-OMe). The complexes were characterized by IR spectra and magnetic moment measurements. NiL2 were characterized by electronic spectra and several CuL2 by ESR. In CuL2, L– are bidentate coordinating through the hydrazone N and O atoms. In NiL2 and in CuLX, L– are tridentate, coordinating via the imidazole N, hydrazone N and O atoms. In the experiment, the researchers used many compounds, for example, 1-Methyl-1H-benzo[d]imidazole-2-carbaldehyde (cas: 3012-80-4SDS of cas: 3012-80-4).
1-Methyl-1H-benzo[d]imidazole-2-carbaldehyde (cas: 3012-80-4) belongs to imidazole derivatives. Imidazole derivatives generally have good solubility in protic solvents. Simple imidazole derivatives, such as 1H-imidazole, 2-methyl-1H-imidazole, and 1,2-dimethylimidazole, have very high solubility in water. Imidazole is incorporated into many important biological compounds. The most pervasive is the amino acid histidine, which has an imidazole side-chain. Histidine is present in many proteins and enzymes, e.g. by binding metal cofactors, as seen in hemoglobin.SDS of cas: 3012-80-4
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem