[1Fp08-11] SS2

[1Fp10S] Element identification based on the Z-contrast principle and visualization of hetero-metallic bonding

*Minori Inazu¹, Takane Imaoka¹, Kimihisa Yamamoto¹ (1. Laboratory for chemistry and life science institute of innovative research, Tokyo Institute of Technology)

Traditionally, chemistry has developed based on obtaining thermodynamically stable and isolable compounds such as molecules and solids by chemical reactions. However, recent developments in computational chemistry have placed increased importance on studying the dynamic assembly and disassembly of atoms and molecules formed in situ. For example, the nature of heterometallic dimers, such as element dependence and the difference from bulk is not yet known experimentally. This study aims to elucidate the elemental dependence on the formation of heterometallic dimers by the direct observation and analysis of metal dimers using atomic resolution STEM imaging. Here we succeeded in the visualization of the formation and dissociation dynamics of labile dimers and trimers at atomic resolution with elemental identifications. This method allows the identification of moving atoms even at low electron doses. Although the observed molecules are labile, we could directly visualize the short-lived molecules that have not been observed.