Crystal structures of the dicyclohexyl-(18-crown-6) uranyl perchlorate complex and of its hydrolysis product

Inclusion complex between uranyl and an azacrown; structure of [UO2(18-azacrown-6)]2+.2CF3SO3−

“…Of particular interest has been the inclusion of the uranyl ion in macrocycles; however, the majority of structural studies concern complexes in which the crown ligand is linked to the uranyl ion via hydrogen bonds (Rogers, Bond, Hippie, Rollins & Henry, 1991;Gutberlet, Dreissig, Luger, Bechthold, Maung & Knochel, 1989) and few structural studies show a direct uranyl-crown coordination (Navaza, Villain & Charpin, 1984;Dejean, Charpin, Folcher, Rigny, Navaza & Tsoucaris, 1987;Deshayes, Keller, Lance, Navaza, Nierlich & Vigner, 1993). The probability of the uranyl complexing in the crown cavity is increased by a judicious choice of the solvent-anion pair, which has to be poorly coordinating with respect to the uranyl.…”

Röntgenstrukturanalyse von diaquadinitratodioxouran(VI)–1,4,7,10,13-pentaoxacyclopentadecan

“…Komplexe mit U ~v bzw. der Uranylgruppe als Koordinationszentrum und Kronenethern als potentiellen Liganden lassen sich prinzipiell in zwei Kategorien einteilen, die sich in der Art der Wechselwirkung zwischen dem Zentralatom und dem Kronenetherliganden unterscheiden (elBasyouny, 1983 (Navaza, Villain & Charpin, 1984).…”

Ab initio Quantum Chemical Study on Charge Distribution and Molecular Structure of Uranyl (VI) Species with Raman Frequency

“…Then the investigation of uranyl species gives most basic information for other actinyl species investigation. Until now, so many experimental [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] and theoretical approaches are performed for [UO 2 …”

“…In this work, these complexes are optimized the structures, and calculated some electronic and physical properties. After the calculated results were compared with experimental results, 1,5,[13][14][15][16] the relation between Raman frequencies and some properties are discussed, especially charge distributions, uranyl bond lengths, and coordination number.…”