Electron Cartography in Clusters
Abstract
Deconvoluting the atom‐specific electron density within polynuclear systems remains a challenge. A multiple‐wavelength anomalous diffraction study on four clusters that share the same [Co6Se8] core was performed. Two cluster types were designed, one having a symmetric ligand sphere and the other having an asymmetric ligand sphere. It was found that in the neutral, asymmetric, CO‐bound cluster, the Co−CO site is more highly oxidized than the other five Co atoms; when an electron is removed, the hole is distributed among the Se atoms. In the neutral, symmetric cluster, the Co atoms divide by electron population into two sets of three, each set being meridional; upon removal of an electron, the hole is distributed among all the Co atoms. This ligand‐dependent tuning of the electron/hole distribution relates directly to the performance of clusters in biological and synthetic systems.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 21, 2018
- Source ID
- 10.1002/anie.201806426
Entities
People
- Anouck M. Champsaur
- Bonnie Choi
- Colin Nuckolls
- Daniel W. Paley
- Michael L Steigerwald
- Raúl Hernández Sánchez
- Suyin Grass Wang
- Wei Bu
- Xavier Roy
- Yu‐sheng Chen
Organizations
- Air Force Office of Scientific Research
- Columbia University
- National Science Foundation
- United States Department of Energy