• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >Site-Selective Ligand Exchange on a Heteroleptic Ti-IV Complex Towards Stepwise Multicomponent Self-Assembly
【24h】

Site-Selective Ligand Exchange on a Heteroleptic Ti-IV Complex Towards Stepwise Multicomponent Self-Assembly

机译：Ti-IV配合物对逐步多组分自组装的位点选择性配体交换。

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

A series of heteroleptic [Ti1(2)X](-) complexes have been selectively constructed from a mixture of Ti-IV ions, a pyridyl catechol ligand (H(2)1; H(2)1 = 4-(3-pyridyl)catechol), and various bidentate ligands (HX) in the presence of a weak base, in addition to a previously reported [Ti1(2)(acac)](-) (acac = acetylacetonate) complex. Comparative studies of these Ti-IV complexes revealed that [Ti1(2)(trop)](-) (trop = tropolonate) is much more stable than the [Ti1(2)(acac)](-) complex, which allows the replacement of acac with trop on the [Ti1(2)(acac)](-) complex. This Ti-IV-centered site-selective ligand exchange reaction also takes place on a heteronuclear Pd-II-Ti-IV ring complex with the preservation of the Pd-II-centered coordination structures. Intra- and intermolecular linking between two Ti-IV centers with a flexible or a rigid bis-tropolone bridging ligand provided a tetranuclear and an octanuclear Pd-II-Ti-IV complex, respectively. These higher-order structures could be efficiently constructed only through a step-wise synthetic route.
机译：从Ti-IV离子，吡啶基儿茶酚配体（H（2）1; H（2）1 = 4-（3-除先前报道的[Ti1（2）（acac）]（-）（acac =乙酰丙酮）配合物外，在弱碱的存在下，吡啶基邻苯二酚和各种二齿配体（HX）。这些Ti-IV配合物的比较研究表明[Ti1（2）（trop）]（-）（trop = tropolonate）比[Ti1（2）（acac）]（-）配合物更稳定。 [Ti1（2）（acac）]（-）络合物上的trop取代acac。这种以Ti-IV为中心的位点选择性配体交换反应也发生在异核Pd-II-Ti-IV环络合物上，并且保留了以Pd-II为中心的配位结构。两个Ti-IV中心与柔性或刚性双-Tropolone桥联配体之间的分子内和分子间连接分别提供了四核和八核Pd-II-Ti-IV配合物。这些高阶结构只有通过逐步合成的途径才能有效地构建。

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