详细信息    查看全文

• 作者：Rihong Cong ; Junliang Sun ; Tao Yang ; Mingrun Li ; Fuhui Liao ; Yingxia Wang ; Jianhua Lin
• 刊名：Inorganic Chemistry
• 出版年：2011
• 出版时间：June 6, 2011
• 年：2011
• 卷：50
• 期：11
• 页码：5098-5104
• 全文大小：1039K
• 年卷期：v.50,no.11(June 6, 2011)
• ISSN：1520-510X

文摘

Two new bismuth hydroxyl borates, Bi₂O₂[B₃O₅(OH)] (I) and Bi₂O₂[BO₂(OH)] (II), have been synthesized under hydrothermal conditions. Their structures were determined by single-crystal and powder X-ray diffraction data, respectively. Compound I crystallizes in the orthorhombic space group Pbca with the lattice constants of a = 6.0268(3) 脜, b = 11.3635(6) 脜, and c = 19.348(1) 脜. Compound II crystallizes in the monoclinic space group Cm with the lattice constants of a = 5.4676(6) 脜, b = 14.6643(5) 脜, c = 3.9058(1) 脜, and 尾 = 135.587(6)掳. The borate fundamental building block (FBB) in I is a three-ring unit [B₃O₆(OH)]^{4鈥?/sup>, which connects one by one via sharing corners, forming an infinite zigzag chain along the a direction. The borate chains are further linked by hydrogen bonds, showing as a borate layer within the ab plane. The FBB in II is an isolated [BO₂(OH)]2鈥?/sup> triangle, which links to two neighboring FBBs by strong hydrogen bonds, resulting in a borate chain along the a direction. Both compounds contain [Bi₂O₂]2+ layers, and the [Bi₂O₂]2+ layers combine with the corresponding borate layers alternatively, forming the whole structures. These two new bismuth borates are the first ones containing [Bi₂O₂]2+ layers in borates. The appearance of Bi₂O₂[BO₂(OH)] (II) completes the series of compounds Bi₂O₂[BO₂(OH)], Bi₂O₂CO₃, and Bi₂O₂[NO₃(OH)] and the formation of Bi₂O₂[B₃O₅(OH)] provides another example in demonstrating the polymerization tendency of borate groups.}