文献类型：期刊文献

英文题名：Formation of hypermetallic molecule LiZnO⁺ from laser plasma

作者：Fu, ZW; Zeng, XK; Zhang, YH; Qin, QZ; Chen, H; Huang, RB; Zheng, LS

机构：[1]Fudan Univ, Dept Chem, Laser Chem Inst, Shanghai 200433, Peoples R China;[2]E China Univ Sci & Technol, Chem Phys Lab, Shanghai 200237, Peoples R China;[3]Xiamen Univ, State Key Lab Phys Chem Solid Surface, Xiamen 361005, Peoples R China

年份：2001

卷号：22

期号：3

起止页码：482

外文期刊名：CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000167641400031)】；

语种：英文

外文关键词：hypermetallic molecules; time-of-flight mass spectrometer; laser plasma

摘要：By 355 nm laser ablating a composite target prepared from metallic lithium and ZnO in high vaccum, a new hypermetallic oxide LiZnO+ ion, which consists of two heterometal atoms and oxygen atom, was observed by using a time-of-flight mass spectrometer for the first time, The time-of-flight positive ion mass spectra at different delay time between the accelerated electric field and laser pulse are investigated. It shows that the formation of LiOZn+ depends on the delay time, and the hypervalent ion LiOZn+ is observed obviously at the delay time from 7.5 to 17.5 mus. These results suggest that the ion-molecular reaction between the ablated Lif ions and ZnO in the laser plasma should be responsible for the formation of hypermetallic LiZnO+.