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Synthesis, crystal engineering, and magnetic properties of an anionic 4-terpyridone based copper(II) azide supramolecule containing dinuclear–mononuclear cocrystal
Ist Teil von
Polyhedron, 2008-08, Vol.27 (12), p.2693-2697
Ort / Verlag
Elsevier Ltd
Erscheinungsjahr
2008
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Synthesis, crystal engineering, and magnetic properties of an anionic 4-terpyridone (L) based three-dimensional supramolecule, [
Cu
2
II
(L)
2(μ
1,1-N
3)
2]
·
2[Cu
II(L)(N
3)(H
2O)]
·
6H
2O, have been described. In this compound, one dinuclear [
Cu
2
II
(L)
2(μ
1,1-N
3)
2] unit is cocrystallized with two mononuclear [Cu
II(L)(N
3)(H
2O)] units. Eight O–H⋯O type strong hydrogen bonds involving the oxygen centers of anionic 4-terpyridone ligand and water molecules link the components into a three-dimensional framework containing hydrogen bonded sheets interlinked by the dinuclear [
Cu
2
II
(L)
2(μ
1,1-N
3)
2] unit.
Synthesis, crystal engineering, and magnetic properties of an anionic 4-terpyridone (L) based three-dimensional supramolecule,
[
Cu
2
II
(L)
2(μ
1,1-N
3)
2]
·
2[Cu
II(L)(N
3)(H
2O)]
·
6H
2O (
1), have been described in the present investigation. The title compound crystallizes in the monoclinic space group
C2/
c with the following unit cell parameters:
a
=
27.803(7)
Å,
b
=
14.361(4)
Å,
c
=
16.071(4)
Å,
β
=
99.09(2)°, and
Z
=
4. In this compound, one dinuclear [
Cu
2
II
(L)
2(μ
1,1-N
3)
2] unit is cocrystallized with two mononuclear [Cu
II (L)(N
3)(H
2O)] units. In both the dinuclear and mononuclear species, 4-terpyridone chelates to the metal centers in its anionic form. The coordination environment of the metal ions is distorted square pyramidal. Eight O–H⋯O type strong hydrogen bonds involving the oxygen of anionic 4-terpyridone ligand and water molecules link the components of
1 into a three-dimensional framework. Excluding the atoms except the water molecules and ligand oxygens, the topology is a two-dimensional network. The mononuclear [Cu
II(L)(N
3)(H
2O)] moiety is appended from this sheet, while the neighboring sheets are interlinked by the dinuclear [
Cu
2
II
(L)
2(μ
1,1-N
3)
2] unit to add the third dimension of the overall three-dimensional structure of the title compound.