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KCd2[N(CN)2]5(H2O)4: an enmeshed honeycomb grid
John A Schlueter1, Urs Geiser, Kylee A Funk
1Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA. jaschlueter@anl.gov
Acta Crystallographica. Section C, Crystal Structure Communications
|February 7, 2008
Summary
This study details a novel coordination polymer, poly[potassium [diaquapenta-micro(2)-dicyanamido-dicadmium(II)] dihydrate]. Its unique structure features interpenetrating anionic sheets forming a tetragonal enmeshed grid.
Area of Science:
- Coordination chemistry
- Materials science
- Crystallography
Background:
- Exploration of novel coordination polymers with cadmium(II) ions.
- Investigation of dicyanamide ligands in constructing extended network structures.
Purpose of the Study:
- To synthesize and characterize a new two-dimensional coordination polymer containing cadmium(II).
- To elucidate the crystal structure and network topology of the title compound.
Main Methods:
- Single-crystal X-ray diffraction analysis.
- Infrared spectroscopy.
- Thermogravimetric analysis.
Main Results:
- The title compound, {K[Cd(2)(C(2)N(3))(5)(H(2)O)(2)].2H(2)O}(n), was synthesized and its crystal structure determined.
- It features 2D anionic sheets {[Cd(2){N(CN)(2)}(H(2)O)(2)](-)}(n) with a modified (6,3)-net topology (layer group cm2m).
- Two sets of these sheets interpenetrate orthogonally, forming a tetragonal enmeshed grid structure.
Conclusions:
- The compound represents a novel example of a cadmium-based coordination polymer with a complex interpenetrating framework.
- The structural characteristics highlight the versatility of dicyanamide ligands in designing intricate network architectures.
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