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Syntheses and structural characterization of three new silver(I) coordination polymers with 1-(2-pyrazinyl)piperazine ligands
- Source :
- Polyhedron. 27:2035-2042
- Publication Year :
- 2008
- Publisher :
- Elsevier BV, 2008.
-
Abstract
- Three novel supramolecules of the Ag(I) complexes of [Ag4(pyapa)4(SO4)2 · 6H2O]n, 1, {[Ag2(pyapa)2][ClO4]2}n, 2 and {[Ag2(pyapa)2(H2O)][NO3]2}n, 3, (pyapa = 1-(2-pyrazinyl)piperazine) have been prepared by self-assembly of Ag(I) salts with 1-(2-pyrazinyl)piperazine (pyapa) in MeOH/H2O system. The IR, TGA and elemental analysis have been recorded and all the complexes have been structurally characterized by X-ray crystallography confirming that complexes 1–3 are one-dimensional coordination polymers. The pyapa ligands in complexes 1–3 bind soft acid Ag(I) ions through the pyrazinyl and piperazinyl groups forming the 1-D polymeric chains. The anions SO 4 2 in complexes 1 shows the disordered geometries and bridging the Ag(I) atoms, while the anions ClO 4 - and NO 3 - in complexes 2–3 are not coordinated to the Ag(I) atoms, and all of them play an important roles in linking cationic chains into 3-D supramolecular structures. Thermal gravimetric analyses (TGA) were carried out to investigate their thermal properties.
- Subjects :
- chemistry.chemical_classification
Chemistry
Coordination polymer
Stereochemistry
Supramolecular chemistry
Cationic polymerization
Polymer
Soft acid
Inorganic Chemistry
Crystallography
chemistry.chemical_compound
Piperazine
Materials Chemistry
Gravimetric analysis
Self-assembly
Physical and Theoretical Chemistry
Subjects
Details
- ISSN :
- 02775387
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Polyhedron
- Accession number :
- edsair.doi...........c7180cdc88529af725b5bb15dc8fc85e