Measuring charge distribution of molecular cations by atomic Coulomb probe microscope
Abstract
Imaging the charge distributions and structures of molecules and clusters will promote the understanding of the dynamics of the quantum system. Here, we report a method by using an Ar atom as a tip to probe the charge distributions of benzene (Bz) cations in gas phase. Remarkably, the measured charge distributions of Bz cation (QH =0.204,QC=-0.037)and dication (QH =0.248,QC=0.0853)agree well with the calculated Mulliken distributions,and the structures of Bz dimer is reconstructed by using the measured charge distributions. The structures of two Bz dimer isomers (T-shaped and PD isomers) can be resolved from the measured inter-molecular potential V(R) between two Bz ions, and the structures of Bz dimer agree well with the theoretical predictions.
Keywords
Cite
@article{arxiv.2211.02463,
title = {Measuring charge distribution of molecular cations by atomic Coulomb probe microscope},
author = {Xitao Yu and Xiaoqing Hu and Jiaqi Zhou and Xinyu Zhang and Xinning Zhao and Shaokui Jia and Xiaorui Xue and Dianxiang Ren and Xiaokai Li and Yong Wu and Xueguang Ren and Sizuo Luo and Dajun Ding},
journal= {arXiv preprint arXiv:2211.02463},
year = {2022}
}
Comments
7 pages, 3 Figures