Mutual Influences of Ligands as Revealed by ²H NMR Shifts and the Angular Overlap Model Parameters: trans‐ and cis‐[CrX₂(N)₄]‐Type Complexes with Aliphatic Amine Ligands

Abstract

We have previously reported the relationship between 2 H NMR chemical shift differences (∆δ) and the angular overlap model (AOM) parameter e σ (F), which represents the σ antibonding interaction energy obtained from the solvatochro- n+ is found to be well correlated with the reported e σ (X) values for the co-ligands X. This is the first example of the co-ligand effect, or a mutual influence of ligands, associated with variation of the Cr-N and Cr-X bonds in cis-and trans-[CrX 2 N 4 ]-