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Synthesis, structures, thermal and magnetic properties of two bis(oxalato)cuprate(II) hybrid salts containing pyridinium derivative cations
| Content Provider | Hyper Articles en Ligne (HAL) |
|---|---|
| Author | Dazem, Cyrielle, L F Fokwa, Boniface, P T Dazem, Cyrielle L.F. Ndosiri, Bridget, N Nfor, Emmanuel, N Köferstein, Roberto Shankhari, Pritam Fokwa, Boniface P.T. Nenwa, Justin |
| Copyright Year | 2020 |
| Abstract | Two bis(oxalato)cuprate(II) hybrid salts, (C 5 H 7 N 2) 2 [Cu(C 2 O 4) 2 ]·2H 2 O (1) and (C 7 H 11 N 2) 2 [Cu(C 2 O 4) 2 ]·5H 2 O (2) (C 5 H 7 N 2 = 3-aminopyridinium; C 7 H 11 N 2 = 2-amino-4,6-dimethylpyridinium) have been synthesized and characterized by elemental and thermal analyses, IR and UV-Vis spectroscopies, single-crystal X-ray diffraction, and SQUID magnetometry. The polymeric anionic motifs in the two salts are significantly different. In 1, stacking of [Cu(C 2 O 4) 2 ] 2-units through axial Cu···O contacts (2.890 Å) yields straight Cu(II) chains, with a prolate CuO6 octahedron around Cu(II) ions, formed by two cis-chelated oxalate anions and two axial O-atoms of neighboring [Cu(C 2 O 4) 2 ] 2-units. By contrast, in 2, stacking of [Cu(C 2 O 4) 2 ] 2-units occurs via bis-bidentate oxalate groups, yielding zigzag Cu(II) chains with a distorted CuO6 coordination sphere. Thermal studies confirmed the presence of solvent water molecules in both salts. Magnetic studies revealed weak antiferromagnetic and weak ferromagnetic interactions between Cu(II) ions in 1 and 2, respectively. |
| Related Links | https://hal.science/hal-02494745/file/Bis%28oxalato%29cuprate%28II%29%20hybrid%20salts.pdf |
| e-ISSN | 00222860 |
| DOI | 10.1016/j.molstruc.2019.127399 |
| Journal | Journal of Molecular Structure |
| Volume Number | 1203 |
| Language | English |
| Publisher | HAL CCSD Elsevier |
| Publisher Date | 2020-03-01 |
| Access Restriction | Open |
| Subject Keyword | Bis(oxalato)cuprate(II) complexes Magnetic properties Copper complexes Coordination Compounds Copper(II) chains Hybrid salts pyridinium Inorganic chemistry Chemical Sciences Material chemistry Chemical Sciences Chemical Sciences Coordination chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Analytical Chemistry Inorganic Chemistry Organic Chemistry |
