Artner Christine, Weil Matthias
Institute for Chemical Technologies and Analytics, Division of Structural Chemistry, Vienna University of Technology, Getreidemarkt 9/164-SC, A-1060 Vienna, Austria.
Acta Crystallogr Sect E Struct Rep Online. 2012 Sep 1;68(Pt 9):i71. doi: 10.1107/S1600536812037038. Epub 2012 Aug 31.
Pb(6)Co(9)(TeO(6))(5), hexa-lead(II) nona-cobalt(II) penta-tellur-ate(VI), is isotypic with its nickel(II) analogue. The asymmetric unit contains two Pb atoms (site symmetries .2., ..2), four Co atoms (..2, ..2, 3.., 3.2) two Te atoms (..2, 3..) and six O atoms (all in general positions), with the Te and Co sites in octa-hedral coordination environments. The crystal structure can be subdivided into two types of layers parallel to (001). The first layer at z ≃ 0.25 is made up of edge-sharing [CoO(6)] and [TeO(6)] octa-hedra, with 1/6 of the octa-hedral holes not occupied. The second layer, situated at z ≃ 0, consist of an alternating arrangement of Pb(II) atoms and of double octa-hedra that are made up from face-sharing [CoO(6)] and [TeO(6)] octa-hedra. The two types of layers are linked together through corner-sharing of [CoO(6)] and [TeO(6)] octa-hedra. The Pb(II) atoms are situated in the cavities of the framework and are stereochemically active with one-sided [4]- and [6]-coordinations, respectively.
六铅（II）九钴（II）五碲酸（VI）Pb(6)Co(9)(TeO(6))(5)与其镍（II）类似物同型。不对称单元包含两个Pb原子（点群对称性.2.,..2）、四个Co原子（..2,..2, 3.., 3.2）、两个Te原子（..2, 3..）和六个O原子（均处于一般位置），Te和Co位点处于八面体配位环境中。晶体结构可细分为平行于(001)的两种类型的层。z≃0.25处的第一层由边共享的[CoO(6)]和[TeO(6)]八面体组成，八面体孔中有1/6未被占据。位于z≃0处的第二层由Pb(II)原子和由面共享的[CoO(6)]和[TeO(6)]八面体组成的双八面体交替排列而成。这两种类型的层通过[CoO(6)]和[TeO(6)]八面体的角共享连接在一起。Pb(II)原子位于骨架的空穴中，分别具有单边[4]配位和[6]配位，具有立体化学活性。
