Abstract
The reactions of K
3
[Cu(CN)
4
], R
3
SnCl (R = Me or ph) and 2,3-dimethyl quinoxaline (dmqox) in H
2
O/acetonitrile media at room temperature afford the 3D-supramolecular coordination polymers (SCP)
,
1
and
,
2.
The structure of the tin free
1
consists of parallel zigzag chains connected by dmqox to form 2D-sheets containing hexagonal 18-atom fused Cu
6
(CN)
4
(dmqox)
2
rings. The interwoven sheets along the
a
axis are close packed by extensive H-bonds developing 3D-network structure. The structures of
1
and
2
are investigated by elemental analysis IR, NMR and mass spectra. The ESI
+
and ESI
−
mass spectra of
2
support its polymeric nature while the ESI
+
mass spectrum confirms the expected M. W. suggested by elemental analysis. The
13
C-NMR spectrum of
2
supports the fact that the network structure of
2
contains the rhombic [Cu
2
(μ
3
-CN)
2
] motif. The structure of
2
was compared with the structure of the reported prototype
as well as the other related structures.