Alekseev Evgeny V, Krivovichev Sergey V, Malcherek Thomas, Depmeier Wulf
Institut für Geowissenschaften, Kiel University, Olshausenstrasse 40, 24118 Kiel, Germany.
Inorg Chem. 2007 Oct 15;46(21):8442-4. doi: 10.1021/ic7009385. Epub 2007 Sep 11.
Dark-red crystals of the new compound Li(4)[(UO(2))(10)O10(Mo(2)O(8))] (1) have been obtained by high-temperature solid-state reactions. The structure of 1 (monoclinic, P2(1)/c, a = 7.9426(4) A, b = 19.9895(9) A, c = 10.0796(5) A, beta = 90.575(2) degrees, V = 1600.24(13) A(3), Z = 4) consists of a framework of U and Mo polyhedra with Li+ cations in the channels. The framework contains seven-polyhedra-wide uranium oxide tapes interlinked by dimers of edge-sharing [4 + 1]-distorted MoO(5) polyhedra. The U-O tapes are parallel to the a axis, and their planes are oriented parallel to (021) and (02) so that they are cross-linked within the framework. The core of the tapes consists of unprecedented one-dimensional arrays of cation-cation-bonded uranyl ions. The arrays are constructed from eight-membered cycles with uranyl ions linked through two- and three-center cation-cation interactions.
通过高温固态反应已获得新化合物Li₄[(UO₂)₁₀O₁₀(Mo₂O₈)]（1）的暗红色晶体。1的结构（单斜晶系，P2₁/c，a = 7.9426(4) Å，b = 19.9895(9) Å，c = 10.0796(5) Å，β = 90.575(2)°，V = 1600.24(13) ų，Z = ）由U和Mo多面体框架组成，Li⁺阳离子位于通道中。该框架包含由边共享的[4 + 1]扭曲MoO₅多面体二聚体相连的七多面体宽的氧化铀带。U - O带平行于a轴，其平面平行于(021)和(02)取向，以便它们在框架内交联。带的核心由前所未有的一维阳离子 - 阳离子键合铀酰离子阵列组成。这些阵列由八元环构成，铀酰离子通过两中心和三中心阳离子 - 阳离子相互作用相连。
