Three linear multidentate ligands incorporating terminal 8-thioquinoline rings and flexible polyethylene glycol or semi-rigid o-xylylene spacers have been synthesised: pentadentate 1, 5-bis (8-quinolylsulfanyl)-3-oxapentane (OESQ), hexadentate 1, 8-bis (8-quinolylsulfanyl)- 3, 6-dioxaoctane (ODSQ) and tetradentate 1, 2-bis (quinolin-8-ylsulfanylmethyl) benzene (OBSQ). Reaction of these ligands with various copper salts afforded three families of ...