Abstract A combination of experimental and theoretical methods have been used to elucidate the complexation properties of a new sugar-derived hexadentate ligand, namely methyl 2, 3, 4-tri-O-(2-picolyl)-β-D-ribopyranoside (L). The coordination bond lengths in the complexes with Mn II, Co II, Ni II, and Zn II show substantial deviations from ideal octahedra with deformation towards trigonal-prismatic geometries, which is indicative of a ...