SYNTHESIS OF A NEW AZA-14-CROWN-4 WITH DI(Α-PYRIDYL)-SUBSTITUTED BISPIDINE SUBUNIT AND THE CRYSTAL STRUCTURE OF ITS COMPLEX WITH COCL2 Статья Kolyadina N.M., Sokol V.I., Kvartalov V.B., Davydov V.V., Fomicheva E.A., Soldatenkov A.T., Sergienko V.S. Russian Journal of Inorganic Chemistry. IAPC Nauka/Interperiodica. Том 58. 2013. С. 671-677