Gomez Germán E, Ridenour J August, Byrne Nicole M, Shevchenko Alexander P, Cahill Christopher L
Instituto de Investigaciones en Tecnología Química (INTEQUI), Area de Química General e Inorgánica "Dr. G. F. Puelles," Facultad de Química, Bioquímica y Farmacia, Chacabuco y Pedernera , Universidad Nacional de San Luis , Almirante Brown, 1455 , 5700 San Luis , Argentina.
Department of Chemistry , The George Washington University , Science and Engineering Hall, 800 22nd Street, NW , Washington , DC 20052 , United States.
Inorg Chem. 2019 Jun 3;58(11):7243-7254. doi: 10.1021/acs.inorgchem.9b00255. Epub 2019 Apr 18.
Six new uranyl hybrid materials have been synthesized solvothermally utilizing the ligands 2,2'-bipyridine-3,3'-dicarboxylic acid (HL) and 2,2':6',2''-terpyridine (TPY). The six compounds are classified as either molecular complexes (IO connectivity), [(UO)(L)(TPY)]·HO (1), [Ni(TPY)][(UO)(L)]·3HO (2), and [Cu(TPY)][(UO)(L)]·3HO (3), or 3D metal-organic frameworks (MOFs, IO connectivity), [Cu(UO)(OH)(CHO)(L)(TPY)]·6HO (4), [Zn(UO)(OH)(NO)(CHO)(L)(TPY)]·4HO (5), and Na[Ni(UO)(OH)(O)(L)]·9HO (6). A discussion of the influence of transition metal incorporation, chelating effects of the ligand, and synthesis conditions on the formation of uranyl materials is presented. The structure of compound 6 is of particular note due to large channel-like voids with a diameter of approximately 19.6 Å. A topological analysis of 6 reveals a new topology with a 9-nodal 3,3,3,3,3,3,3,4,5-connected network, designated geg1 hereafter. Further, solid state photoluminescence experiments show emission and lifetimes values consistent with related uranyl compounds.
