Structure effects in copper coordination compounds of ligands with thioether, aromatic nitrogen, and ether donors

Preparations of the ligands 1,9-bis(2-pyridyl)-2,5,8-trithianonane (L1) and 1,9-bis(2-pyridyl)-5-oxa-2,8-dithianonane (L2) and their copper(II) complex cations [Cu(L1)]2+ and [Cu(L2)]2+ as ClO4−, C...