| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1311932 | Inorganica Chimica Acta | 2016 | 7 Pages |
•Two new compounds were synthesized from two novel zwitterionic ligands.•Their crystal structures and magnetic properties are studied.•The Co(II) compound induces ferromagnetic coupling, while Cu(II) compound shows antiferromagnetic coupling.
Two coordination polymers, [Co(L1)0.5(N3)2]n·3nH2O (1), [Cu3(OH)3(L2)3(H2O)1.5]n·nH2O (2), (H2L1 = 1,4-bis(4-carboxylatopyridinium-4-benzoate-1-methylene)benzene, HL2 = 4-(4-oxypyridinium-1-yl)benzotetrazolate) have been synthesized and studied by means of X-ray crystallography and magnetic analyses. Compound 1 exhibits a 2D braided grid structure, in which 1D [Co(N3)2(COO)]n chains are cross-linked by the cationic bis(pyridinium) spacers of the L1 ligand. Compound 2 is a 1D coordination chain in which the Cu(II) ions are linked by the mixed (μ-OH)(μ-N,N-tetrazolate) double bridges. The mixed (μ-EO-N3)2(COO) triple bridges transmits the ferromagnetic interaction between Co(II) ions, while the antiferromagnetic interaction between Cu(II) ions was induced by the mixed (μ-OH)(μ-N,N-tetrazolate) double bridges.
Graphical abstractTwo coordination polymer containing Co(II)/Cu(II) chains with different mixed bridges was derived from two new zwitterionic ligands; The (μ-EO-N3)2(COO) triple bridges transmit ferromagnetic interactions in 1, while the double (μ-OH)(μ-N,N-tetrazolate) antiferromagnetic interactions in 2.Figure optionsDownload full-size imageDownload as PowerPoint slide
