59250-72-5Relevant academic research and scientific papers
Preparation and spectroscopic properties of five 7,16-bis(azophenyl)tetraaza[14]annulene nickel(II) complexes
Sakata, Kazunori,Yamashita, Junichi,Hashimoto, Mamoru,Moriguchi, Tetsuji,Tsuge, Akihiko
, p. 190 - 194 (2008/10/08)
The diazo coupling reaction of a tetraaza[14]annulene nickel(II) complex (1) with a series of para-substituted phenyldiazonium tetra-fluoroborates led to the corresponding 7,16-bis(azophenyl) products. The nickel(II) complexes formed are approximate square-planar coordinations and diamagnetic. The olefinic proton signals at the 7,16-positions of the nickel(II) complexes are destroyed by the diazo coupling reaction in the NMR spectra. The carbon signals at the 7,16-positions exhibit downfield shifts of about 30 ppm with the diazo coupling reaction.
