The crystal structure of the compound {[Cu(ox)(bpy)].2.5H(2)O}(n) 1 (ox = o
xalate dianion, bpy = 2,2'-bipyridine) consists of columnar stacks of neutr
al [Cu(ox)(bpy)] units linked by semicoordination Cu-O bonds. The magnetic
properties show the occurrence of alternating ferro-antiferromagnetic inter
actions (J(AF) = -2.1cm(-1) and J(F) = +0.2 cm(-1)). (C) 2001 Elsevier Scie
nce B.V. All rights reserved.