Synthesis and Crystal Structure of Disilvertitanate-(IV), Ag2TiO3
Synthesis and Crystal Structure of Disilvertitanate-(IV), Ag2TiO3
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Disilvertitate-(IV), Ag2TiO3 的合成及晶体结构
DOI：
10.1006/jssc.1997.7518
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
M. Jansen
中科院分区：
文献类型：
--
作者：
C. Linke;M. Jansen
Ag2TiO3是通过溶胶-凝胶法制备的K2TiOx(OH)6−2x(x≅1)与Ag粉进行固相反应合成的。在630℃的反应过程中，氧气压力保持在0.14GPa。 Ag2TiO3晶体（单斜晶系，C/2c，a=16.813（4）A，b=7.612（1）A，c=5.054（1）A，β=101.95（2）°，Z=8，ω/θ扫描，数据收集排除日光，数值吸收校正，R1=0.035，wR2=0.074）呈黄色，平坦棱柱形状，对空气和湿气稳定。晶体结构表现出新型聚合钛酸阴离子1∞[TiO3]2n−n：TiO6八面体通过公共边缘连接形成一维延伸链。银原子排列成延伸的同原子结构单元，具有相当短的银-银接触，这表明d10配置的银阳离子之间的键合相互作用较弱。
Ag2TiO3was synthesized by solid state reaction of K2TiOx(OH)6−2x(x≅1), as prepared by sol–gel methods, and Ag powder. During the reaction at 630°C an oxygen pressure of 0.14 GPa was maintained. Crystals of Ag2TiO3(monoclinic,C/2c,a=16.813(4) A ,b=7.612(1) A ,c=5.054(1) A ,β=101.95 (2)°,Z=8,ω/θscan, data collection excluding daylight, numerical absorption correction,R1=0.035, wR2=0.074) are yellow, of flat prismatic shape, and stable against air and moisture. The crystal structure exhibits the novel polymeric titanate anion1∞[TiO3]2n−n: TiO6octahedra are connected by common edges to form one-dimensionally extended chains. The silver atoms are arranged to an extended homoatomic structural unit with rather short silver–silver contacts, which are indicative for weak bonding interactions between thed10configurated silver cations.