Abstract
Cyanamidonitrate (
can
−
=
NO
2N(CN)
−) forms with copper(II) ions and neutral base (
Him
=
imidazole) a trinuclear complex of the linear type [(
can)(
Him)
3Cu(μ-
im)Cu(
Him)
2(NO
3)
2(μ-
im)Cu(
Him)
3(
can)]. The terminal Cu atoms are pentacoordinated, whereas the central Cu atom has a strongly elongated octahedral coordination The magnetic susceptibility measurements confirm that the exchange coupling constants of the adjacent Cu centers is strongly antiferromagnetic (
J/hc
=
−115
cm
−1). The magnetization per complex is
M
=
0.73 μ
B at
B
=
5
T and
T
=
5
K.
Cyanamidonitrate (
can
−
=
NO
2N(CN)
−) forms with copper(II) ions and neutral base (
Him
=
imidazole) a complex of the composition [Cu
3(
Him)
8(
im)
2(NO
3)
2(
can)
2] where
im stands for the imidazolato (deprotonated imidazole) ligand. The crystal structure reveals three Cu(II) atoms linked by two imidazolato groups in this trinuclear complex of the linear type [(
can)(
Him)
3Cu(μ-
im)Cu(
Him)
2(NO
3)
2(μ-
im)Cu(
Him)
3(
can)]. The terminal Cu atoms are pentacoordinated, whereas the central Cu atom has a strongly elongated octahedral coordination. The magnetic susceptibility measurements confirm that the exchange coupling constants of the adjacent Cu centers is strongly antiferromagnetic (
J/hc
=
−115
cm
−1). The magnetization per complex is
M
=
0.73
μ
B at
B
=
5
T and
T
=
5
K.