| MCO和MCONa^＋中CO催化活化的成键能研究（Ⅱ） |
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| 引用本文： | 王长生,孙仁安.MCO和MCONa^＋中CO催化活化的成键能研究（Ⅱ）[J].辽宁师范大学学报(自然科学版),1996,19(3):236-239. |
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| 作者姓名： | 王长生 孙仁安 |
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| 作者单位： | 辽宁师范大学化学系 |
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| 摘 要： | 使用相对论赝势从头计算方法和成键能判据研究了模型化合物ＭＣＯ和ＭＣＯＮａ＋（Ｍ＝Ｒｕ，Ｐｄ）的电子结构，讨论了其中的化学键及Ｎａ＋的助催化作用．得出在单独Ｒｕ、Ｐｄ情况下ＣＯ不被活化，其原因在于金属与ＣＯ的主要作用是ＣＯ的弱反键占据轨道５σ电子到金属空ｄ轨道的配位，ＣＯ的弱反键轨道上减少电子的占据不仅不能使ＣＯ的键削弱反而有少许增强；当有Ｎａ＋参与时增强了金属ｄ电子到ＣＯ反键轨道２π的反馈能力，从而使ＣＯ键被削弱而得到活化．计算还表明Ｎａ＋的作用相当于空间电荷
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| 关 键 词： | 相对论赝势，从头计算方法，成键能判据，助催化作用 |
A THEORETICAL STUDY OF MCO AND MCONa (M=Ru,Pd) COMPLEXES WITH THE BONDING ENERGY CRITERION |
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| Wang Changsheng,Sun Ren''an,Gao Bing,Zhao Dongxia,Yang Zhongzhi.A THEORETICAL STUDY OF MCO AND MCONa (M=Ru,Pd) COMPLEXES WITH THE BONDING ENERGY CRITERION[J].Journal of Liaoning Normal University(Natural Science Edition),1996,19(3):236-239. |
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| Authors: | Wang Changsheng Sun Ren'an Gao Bing Zhao Dongxia Yang Zhongzhi |
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| Abstract: | The relativistic Pseudopotential ab initio and the bonding energy criterion were used on MCO and MCONa Complexes (M=Ru,Pd).The bonding energy Eb (i)of M.O.and Eb (AB)between atoms had been obtained,It was found that CO was not activated easily by pure Ru or Pd,but CO was activated greatly when adding Na to the system RuCO or PdCO.The calculation results also showed that the main effect of Na is equivalent with space charge. |
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| Keywords: | the relativistic effective core potential ab initio promoted catalysis the bonding energy criterion |
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