节点文献
理论研究超碱金属FM2和OM3(M=Li,Na,K)
Theoretical Study on Superalkalies OM3 and FM2(M=Li,Na,K)
【Author】 Tong Jing,Li Ying,Wu Di~*,Li Zhi-Ru Institute of Theoretical Chemistry,State Key Laboratory of Theoretical and Computational Chemistry,Jilin University,Changchun 130023,
【机构】 吉林大学理论化学研究所理论化学计算国家重点实验室;
【摘要】 对超碱金属的理论预测和实验研究是当前一个热门的课题,受到越来越多科学家的关注[1,2]。而掺杂不同碱金属的超碱金属体系的性质目前还未见相关报道。
【Abstract】 The geometrical optimization and frequencies analyses of OM3+ and OM3(M=Li,Na, K) species were performed using the CCSD(T) method with the 6-311+G(d) basis set.For FLi2+ and FLi2(M=Li,Na,K) species,we adopted the same method with the 6-311+G(3df) basis set. The introduction of various alkali ligands into the superalkali cations plays a crucial role on the structures of FM2+ and OM3+.The vertical ionization energies(VIE) and adiabatic ionization energies(AIE) of all the neutral species are calculated at the CCSD(T)/6-311+G(3df) level.In all the cases,the AIE values are in the range of 2.84~3.56 eV for OM3+(M=Li,Na,K) and 3.04~3.93 eV for FM2+(M=Li,Na,K),which are greatly lower than the IE=3.9 eV of Cs atom.Hence, all of these"mixed"species can be classified as superalkalies.The vertical electron affinities (VEA) values of FM2+ and OM3+ cations are obtained at the OVGF/6-311+G(3df) level,which agree well with the AIE values of neutral FM2 and OM3 species.Thus,we consider that the OVGF/6-311+G(3df) treatment should be reliable for measuring the AIE of superalkalies.
- 【会议录名称】 第十届全国计算(机)化学学术会议论文摘要集
- 【会议名称】第十届全国计算(机)化学学术会议
- 【会议时间】2009-10-23
- 【会议地点】中国浙江杭州
- 【分类号】O641.1
- 【主办单位】中国化学会计算机化学专业委员会