Three New Sodium Neptunyl(V) Selenate Hydrates: Structures, Raman Spectroscopy, and Magnetism
作者:Geng Bang Jin、S. Skanthakumar、L. Soderholm
DOI:10.1021/ic202703j
日期:2012.3.5
Green crystals of Na(NpO2)(SeO4)(H2O) (1), Na3(NpO2)(SeO4)2(H2O) (2), and Na3(NpO2)(SeO4)2(H2O)2 (3) have been prepared by a hydrothermal method for 1 or evaporation from aqueous solutions for 2 and 3. The structures of these compounds have been characterized by single-crystal X-ray diffraction. Compound 1 is isostructural with Na(NpO2)(SO4)(H2O) (4). The structure of 1 consists of ribbons of neptunyl(V)
Cation–Cation Interactions: Crystal Structures of Neptunyl(V) Selenate Hydrates, (NpO<sub>2</sub>)<sub>2</sub>(SeO<sub>4</sub>)(H<sub>2</sub>O)<sub><i>n</i></sub> (<i>n</i> = 1, 2, and 4)
作者:Geng Bang Jin、S. Skanthakumar、L. Soderholm
DOI:10.1021/ic200479m
日期:2011.6.6
selenate anion is bound to two neptunyl(V) cations through monodentate linkages. (NpO2)2(SeO4)(H2O)2 is isostructural with the corresponding sulfate analogue as well. It consists of puckered layers of neptunyl(V) pentagonal bipyramids that are further connected by selenate tetrahedra to form a three-dimensional framework. The CCI pattern in the neptunyl layers of dihydrate is very similar to that of tetrahydrate;