Two complexes of uranyl nitrate with N,N,NЈ, and N,NЈ-diethyl-N,NЈ-diphenyl-2,6-pyridinedicarboxamide (EtPhDPA) were synthesized and studied. The complex of tetraalkyl-2,6-pyridinedicarboxamide with metal nitrate was synthesized for the first time. XRD analysis revealed * Prof. Dr. M. Alyapyshev E-Mail: mikkaly@gmail.com [a] ITMO University 49, Kronverksky pr.