The first 3D coordination polymer containing a nucleobase as abridging ligand, {[Cu
2(
-ade)
4(H
2O)
2][Cu(ox)(H
2O)]
2·~14H
2O}
n (
1),has been synthesized by reaction of adenine (Hade) with a basicsolution of K
2[Cu(ox)
2]·2H
2O (ox = oxalato dianion). Compound
1 crystallizes in the trigonal space group
R with
a =
b =31.350(1) Å,
c = 14.285(1) Å,
V = 12158.7(10) Å
3, and
Z = 9.X-ray analysis shows a covalent 3D network in which the copper(II) centers are bridged by tridentate
-N3,N7,N9 adeninate ligands.The compound has relatively large, nanometer-sized tubes associated with the self-assembly process directed solely by metal-ligand interactions. The covalent 3D framework remains intact uponremoval of the guest water molecules trapped in the nanotubes.Magnetic measurements indicate an overall antiferromagneticbehavior of the compound.