Bi, Jian-Hong, Yan Chen, Zi-Xian Huang, Man Cui, and Nai-Liang Hu. 2010. “Synthesis, Structure of Me6[14]N4diene+(ClO4)2 and the Cyclic Voltammetry Measurement of Its Copper(II) Complex”. Asian Journal of Chemistry 20 (6):4887-90. https://asianpubs.org/index.php/ajchem/article/view/19110.