...
首页> 外文期刊>ACS catalysis >Catalytic Dehydrogenation of Dimethylamine Borane by Highly Active Thorium and Uranium Metallocene Complexes
【24h】

Catalytic Dehydrogenation of Dimethylamine Borane by Highly Active Thorium and Uranium Metallocene Complexes

机译:高活性钍和铀茂金属络合物催化脱氢二甲胺硼烷

获取原文
获取原文并翻译 | 示例
           

摘要

The thorium and uranium complexes (C5Me5)(2)AnMe(2), [(C5Me5)(2)An(H)(mu-H)](2) (An = Th, U) and [(C5Me5)(2)U(H)](2) dehydrogenate dimethylamine borane (Me2NH center dot BH3) at room temperature. Upon mild heating at 45 degrees C, turnover frequencies (TOFs) of 400 h(-1) are obtained, which is comparable to some of the fastest Me2NH center dot BH3 dehydrogenation catalysts known in the literature. A beta-hydride elimination mechanism for dehydrogenation is proposed because of the observation of Me2N=BH2, Me2N=BMe2, and Me2N=BHMe in the B-11 NMR spectra of catalytic and stoichiometric reactions. The similar catalytic metrics between the actinide dimethyl and hydride complexes with Me2NH center dot BH3 indicate that the actinide hydride complexes are the active catalysts in this chemistry.
机译:钍和铀配合物(C5ME5)(2)ANME(2),[(C5ME5)(2)(2)(2)(2)(AN = TH,U)和[(C5ME5)(2)(2 )U(H)](2)在室温下脱氢二甲胺硼烷(ME2NH中心BH3)。 在45摄氏度温度下加热时,获得400小时(-1)的周转频率(TOFS),其与文献中已知的一些最快的ME2NH中心点BH3脱氢催化剂相当。 提出了脱氢的β-氢化物消除机制,因为在催化和化学计量反应的B-11 NMR光谱中观察ME2N = BH2,ME2N = BME2和ME2N = BHME。 具有ME2NH中心DOT BH3的致动植物二甲基和氢化物配合物之间的类似催化度量表明散曲线氢化物配合物是该化学中的活性催化剂。

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