...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Introducing organosilicone source into the synthetic system of polyoxovanadates: Two novel {V _(15)Si _6O _(48)}-based extended chains
【24h】

Introducing organosilicone source into the synthetic system of polyoxovanadates: Two novel {V _(15)Si _6O _(48)}-based extended chains

机译：将有机硅源引入聚氧钒酸盐的合成系统中：两个基于{V _（15）Si _6O _（48）}的新型延伸链

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Two novel extended chains based on rare {V ~(IV) _(15)Si _6O _(48)} have been prepared under hydrothermal conditions by introducing an organosilicone source into the synthetic system of the polyoxovanadates. Single-crystal X-ray diffraction analyses show that the neighboring {V ~(IV) _(15)Si _6O _(48)} clusters are linked by a pair of V ~VO _2 fragments via the coordination bonds of (Si-)O-V-O(-Si) to give rise to a zig-zag chain in compound 1, which is the first example of V(iv,v) mixed valence states successfully synthesized in {V _(15)Si _6O _(48)}- containing POMs. While in 2 the linkages are changed to [Co(pdn) 2(H 2O)] 2+ (pdn = 1,3-propanediamine) cations instead of {V ~VO _2} fragments, to generate another comparable 1-D infinite chain, which demonstrates the first organic-inorganic vanadosilicon hybrid linked by a second transition-metal complex. The possible hydrolysis mechanism of tetraethyl orthosilicate as the Si source is postulated to afford a feasible protocol to synthesize a new type of vanadosilicate cluster. The magnetic properties of the two compounds have also been investigated.
机译：在水热条件下，通过将有机硅源引入聚氧钒酸盐的合成体系中，制备了两种基于稀有{V〜（IV）_（15）Si _6O _（48）}的新型延长链。 X射线单晶衍射分析表明，相邻的{V〜（IV）_（15）Si _6O _（48）}团簇通过（Si-）的一对V〜VO _2片段相连OVO（-Si）在化合物1中产生Z字形链，这是在{V _（15）Si _6O _（48）}-中成功合成的V（iv，v）混合价态的第一个例子包含POM。在2中，连接键变为[Co（pdn）2（H 2O）] 2+（pdn = 1,3-丙二胺）阳离子，而不是{V〜VO _2}片段，从而生成另一个可比较的1-D无限链，展示了通过第二种过渡金属络合物连接的第一个有机-无机钒硅杂化物。据推测，原硅酸四乙酯作为硅源的可能的水解机理为合成新型钒硅酸盐团簇提供了可行的方案。还研究了这两种化合物的磁性。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号