Fig. 2
From: Origin of the unusually strong and selective binding of vanadium by polyamidoximes in seawater

DFT-optimized geometries of V(V) complexes. a V(V) complexes with glutaroimide-dioxime (H3IDO). b V(V) complexes with acetamidoxime (HAO). Color legend: V(V), cyan; O, red; N, navy blue; C, gray; H, white