Hydrothermal Synthesis, Crystal Structure, Conductivity, and Thermal Decomposition of [Cu(4,4‘-bipy)(H<sub>2</sub>O)(Mo<sub>3</sub>O<sub>10</sub>)]·H<sub>2</sub>O KongZuping WengLinhong TanDejun HeHeyong ZhangBiao KongJilie YueBin 2004 The hydrothermal reaction of (NH<sub>4</sub>)<sub>6</sub>Mo<sub>7</sub>O<sub>24</sub>·4H<sub>2</sub>O, CuCl<sub>2</sub>·2H<sub>2</sub>O, and 4,4‘-bipyridine yields bipyridine-ligated copper-trimolybdate monohydrate [Cu(4,4‘-bipy)(H<sub>2</sub>O)(Mo<sub>3</sub>O<sub>10</sub>)]·H<sub>2</sub>O in the monoclinic system with space group of <i>C</i><sub>2/c</sub> and cell parameters of <i>a </i>= 15.335(2) Å, <i>b</i> = 15.535(2) Å, <i>c</i> = 15.106(2) Å, β = 101.162(2)°, <i>V</i> = 3530.7(9) Å<sup>3</sup>, and <i>Z</i> = 8. Its structure consists of one-dimensional infinite {[Mo<sub>3</sub>O<sub>10</sub>]<sup>2-</sup>}<sub>∞</sub> chains linked through {Cu<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>(4,4‘-bipy)} units. The Mo−O chain contains distorted {MoO<sub>6</sub>} octahedra connected through corner-sharing oxygen atoms into infinite chains along the <i>c</i> direction and each chain is located in the channel formed by four adjacent crossing chains of {Cu(4,4‘-bipy)(H<sub>2</sub>O)}<i><sub>n</sub></i><sup>2</sup><i><sup>n</sup></i><sup>+</sup>. The crystal shows weak conductivity through Mo−O chain along the <i>c</i> direction and insulating property along either <i>a </i>or <i>b</i> direction. Furthermore, a crystalline bimetallic oxide, CuMo<sub>3</sub>O<sub>10</sub>, forms when the title compound undergoes thermal treatment in N<sub>2</sub> atmosphere after the complete removal of the ligands.