Seven
cadmium(II) arenedisulfonate
compounds, namely [Cd(2,2'-bpy)
2(H
2O)(peds)]·4H
2O (
1), [Cd
2(2,2'-bpy)
4(H
2O)
2(1,5nds)](1,5nds)·4H
2O (
2), [Cd(
cy
clam)(1,5nds)]
2 (
3), {[Cd(inia)
2(H
2O)
2(2,6nds)]·4H
2O}
n (
4), {[Cd(inia)
2(H
2O)
2(bpds)]·4H
2O}
n (
5), {[Cd
2(inia)
4(H
2O)
3(peds)
2]·2H
2O}
n (
6), and [Cd(1,5nds)(H
2O)
2]
n (
7), where 2,2'-bpy = 2,2'-bipyridyl,
cy
clam = 1,4,8,11-tetraaza
cy
clotetrade
cane, inia = isoni
cotinamide, nds = naphthalenedisulfonate, bpds = 4,4'-biphenyldisulfonate, and peds = 4,4'-phenyletherdisulfonate, have been obtained from aqueous solution by usingsimilar pro
cedures and stru
cturally
chara
cterized by X-ray single-
crystal diffra
ction, IR spe
ctros
copy, and thermalgravimetri
c analysis. In
1, the peds anion
coordinates as a monodentate ligand, leading to a mononu
clear unit. In
2 and
3, the 1,5nds anions
coordinate as
2-bridging ligands in different modes, produ
cing
charged or neutraldinu
clear
clusters. In
4 and
5, 2,6nds and bpds behave as
2-spa
cers, resulting in 1-dimensional polymers. Whilein
6, the peds a
cts both as terminal and bridging ligands with the SO
3- groups being either monodentate or
2-bridging,
creating a knotted 1-dimensional polymer with dinu
clear
clusters as the repeating units. In
7, 1,5ndsa
cts as a bridging ligand with ea
ch SO
3- coordinated as a
2-bridging group to adja
cent Cd(II)
centers, leading toa 2-dimensional polymer. Together with the reported {[Cu(en)
2(1,5nds)]·2H
2O}
n (
8), all of the six possible
coordinationmodes adopted by organodisulfonate anions, on the assumption that ea
ch SO
3- group
could be monodentate or
2-bridging, are realized by introdu
cing nitrogen-
containing organi
c ligands as auxiliaries.