John A. Seed

Resonant Inelastic X-ray Scattering Covalency Analysis Reveals Non-Aufbau Electronic Configurations in Low-Valent Lanthanides

Abstract Divalent lanthanide ions can adopt complex 4fn5d1 electron configurations that formally violate the Aufbau principle. The blending of contracted 4f and diffuse 5d character strongly influences lanthanide frontier molecular orbitals, yet quantitative characterization of 5...

A crystalline uranium Fischer-type carbyne

Abstract Since their discovery in 1973, transition metal Fischer carbynes have become a foundational class of metal–carbon triple bond in organometallic chemistry. However, even though the uranium Fischer carbyne bonding motif has been a fundamental target in f -element chemistry...