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Synthesis and crystal structure of Zn2[(UO2)3(SeO4)5](H2O)17

“…The new compound Zn 2 [(UO 2 ) 3 (SeO 4 ) 5 ](H 2 O) 17 17 as consisting of UO 7 and SeO 4 polyhedra. The topological structure of the sheet can easily be described using its nodal representation.…”

“…2c can be classified according to their orientation matrices into four classes (see [22] for more details). The uranyl selenate sheet in the structure of Zn 2 [(UO 2 ) 3 (SeO 4 ) 5 ](H 2 O) 17 belongs to the class with orientational matrix (du du /ddduuu/ud ud /uuuddd). This class also includes [(UO 2 ) 3 (TO 4 ) 5 ] sheets in structures of Mg 2 [(UO 2 ) 3 (CrO 4 ) 5 ](H 2 O) 17 [31] and Cu 2 [(UO 2 ) 3 ((S,Cr)O 4 ) 5 ](H 2 O) 17 [32].…”

“…Under oxidizing conditions, the predominant forms of Se are either selenite, Se 4+ O 3 , or selenate, Se 6+ O 4 , anions. Whereas structural chemistry of uranyl selenites is well studied [5][6][7][8][9][10][11][12], etc., there are relatively few structural determinations reported for the uranyl selenate compounds [13][14][15][16][17][18][19].…”

“…The aim of the present paper is to report synthesis and structure of Zn 2 [(UO 2 ) 3 (SeO 4 ) 5 ](H 2 O) 17 , a new zinc uranyl selenate hydrate. There are at least two inorganic compounds reported in the ZnSeO 4 -UO 2 SeO 4 -H 2 O system.…”

Synthesis and crystal structures of M2[(UO2)3(SeO4)5](H2O)16 (M=Co, Zn)

“…Uranyl minerals and inorganic compounds containing tetrahedrally coordinated hexavalent cations T 6+ such as S 6+ , Cr 6+ , Mo 6+ and Se 6+ are interesting because of their extraordinary structural diversity [1][2][3][4][5][6][7][8][9][10][11][12]. This diversity is in part due to the high flexibility of the U-O-T links that allows formation of a variety of [(UO 2 ) n (TO 4 ) m (H 2 O) p ] structural units, including finite clusters, chains, sheets and frameworks.…”