Enhanced 5f-δ bonding in [U(C₇H₇)₂]⁻: C K-edge XAS, magnetism, and <i>ab initio</i> calculations

Abstract

5f covalency in [U(C 7 H 7 ) 2 ] − was probed with carbon K-edge X-ray absorption spectroscopy (XAS) and electronic structure theory. The results are compared with earlier studies which show that the extent of δ-orbital mixing in [U(C 7 H 7 ) 2 ] 1− is larger than reported previously for U(C 8 H 8 ) 2 .