Ditopic tris(2-mercaptoimidazol-1-yl)borate ligands and their coordination behavior toward [Ru(p-cymene)]2+

► A rare example of a doubly B-B bridged diborane(4) is presented. ► The first chiral ditopic tris(2-mercaptoimidazol-1-yl)borate ligands have been synthesized. ► These ligands readily form dinuclear [Ru(p-cymene)] complexes.