Unknown

Dataset Information

0

Imaging an unsupported metal-metal bond in dirhenium molecules at the atomic scale.


ABSTRACT: Metallic bonds remain one of the most important and least understood of the chemical bonds. In this study, we generated Re2 molecules in which the Re-Re core is unsupported by ligands. Real-time imaging of the atomic-scale dynamics of Re2 adsorbed on a graphitic lattice allows direct measurement of Re-Re bond lengths for individual molecules that changes in discrete steps correlating with bond order from one to four. Direct imaging of the Re-Re bond breaking process reveals a new bonding state with the bond order less than one and a high-amplitude vibrational stretch, preceding the bond dissociation. The methodology, based on aberration-corrected transmission electron microscopy imaging, is shown to be a powerful analytical tool for the investigation of dynamics of metallic bonding at the atomic level.

SUBMITTER: Cao K 

PROVIDER: S-EPMC6968940 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC5563505 | biostudies-literature
| S-EPMC7835350 | biostudies-literature
| S-EPMC10854428 | biostudies-literature
| S-EPMC8263716 | biostudies-literature
| S-EPMC6858253 | biostudies-literature
| S-EPMC6107508 | biostudies-literature
| S-EPMC9095684 | biostudies-literature
| S-EPMC5630597 | biostudies-literature
| S-EPMC4585944 | biostudies-literature
| S-EPMC9378652 | biostudies-literature