...
【24h】

Reversible dimerization of decaniobate

机译:癸二酸酯可逆二聚

获取原文
获取原文并翻译 | 示例
           

摘要

Three different solvates of TBA_6[Nb_(10)O_(28)] (TBA = tetra-n-butylammonium) were structurally characterized. The results revealed that two water molecules are hydrogen-bonded to the terminal oxygens of the [Nb_(10)O_(28)]~(6-) anion in the same manner in all of the solvates. Decaniobate [Nb_(10)O_(28)]~(6-) dimerizes by the action of HCl to form icosaniobate [Nb_(20)O _(54)]~(8-), while icosaniobate breaks up into decaniobate [Nb_(10)O_(28)]~(6-) by the action of TBAOH. Decaniobate also dimerizes spontaneously to form icosaniobate [Nb_(20)O _(54)]~(8-) in CH_2Cl_2 even if no acid is added to the solution. The reaction was followed by IR spectroscopy, and the results suggested the reaction is second order with respect to the concentration of [Nb_(10)O_(28)]~(6-).
机译:对TBA_6 [Nb_(10)O_(28)](TBA =四正丁基铵)的三种不同溶剂化物进行结构表征。结果表明,在所有溶剂化物中,两个水分子以相同的方式氢键合到[Nb_(10)O_(28)]〜(6-)阴离子的末端氧上。十碳酸盐[Nb_(10)O_(28)]〜(6-)在HCl作用下二聚形成二十碳铌酸盐[Nb_(20)O _(54)]〜(8-),而二十碳五酸盐分解成十碳酸盐[Nb_ (10)O_(28)]〜(6-)在TBAOH的作用下。即使在溶液中未添加酸,癸二酸盐也会自发二聚形成二十烷二酸盐[Nb_(20)O _(54)]〜(8-)。通过IR光谱跟踪反应,结果表明该反应相对于[Nb_(10)O_(28)]〜(6-)的浓度为二级。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 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