Two copper(II) polymeric complexes {[Cu(HPymat)-(MeOH)](NO3)}(n) (1) and {[Cu-4(Pymab)(4)(H2O)(4)](NO3)(4)} (2) were synthesized with the carboxylate-containing Schiff-base ligands HPymat(-) and Pymab(-) [H(2)Pymat = (E)-2-(1-(pyridin-2-yl)-methyleneamino)terephthalic acid, HPyrnab = (E)-2-((pyridine-2-yl)methyleneamino)benzoic acid]. Complex 1 is a one-dimensional Cu(II) cationic polymeric complex containing free protonated carboxylic groups and nitrate anions as counterions. Complex 2 is a zero-dimensional tetranudear cationic Cu(11) complex containing nitrate anions as counterions. Complex 1 shows rhombic electron paramagnetic resonance (EPR) spectra in the solid state at room temperature (RT) and 77 K and tetragonal EPR spectra in dimethyl sulfoxide (DMSO) and dimethylformamide (DMF) and "inverse" EPR spectrum in CH3CN. Complex 2 shows rhombic EPR spectra in the solid state at RT and 77 K. But complex 2 shows tetragonal spectra in DMSO, DMF, and CH3CN. Thermogravimetric analysis was also performed for both complexes 1 and 2. Mean-square displacement amplitude analysis was carried out to detect librational disorder along the metal-ligand bonds in crystal structures.

Reversible Switching of Electronic Ground State in a Pentacoordinated Cu(II) 1D Cationic Polymer and Structural Diversity / Ashok, Sasmal; Eugenio, Garribba; Rizzoli, Corrado; Samiran, Mitra. - In: INORGANIC CHEMISTRY. - ISSN 0020-1669. - 53:(2014), pp. 6665-6674. [10.1021/ic500377w]

Reversible Switching of Electronic Ground State in a Pentacoordinated Cu(II) 1D Cationic Polymer and Structural Diversity

RIZZOLI, Corrado;
2014-01-01

Abstract

Two copper(II) polymeric complexes {[Cu(HPymat)-(MeOH)](NO3)}(n) (1) and {[Cu-4(Pymab)(4)(H2O)(4)](NO3)(4)} (2) were synthesized with the carboxylate-containing Schiff-base ligands HPymat(-) and Pymab(-) [H(2)Pymat = (E)-2-(1-(pyridin-2-yl)-methyleneamino)terephthalic acid, HPyrnab = (E)-2-((pyridine-2-yl)methyleneamino)benzoic acid]. Complex 1 is a one-dimensional Cu(II) cationic polymeric complex containing free protonated carboxylic groups and nitrate anions as counterions. Complex 2 is a zero-dimensional tetranudear cationic Cu(11) complex containing nitrate anions as counterions. Complex 1 shows rhombic electron paramagnetic resonance (EPR) spectra in the solid state at room temperature (RT) and 77 K and tetragonal EPR spectra in dimethyl sulfoxide (DMSO) and dimethylformamide (DMF) and "inverse" EPR spectrum in CH3CN. Complex 2 shows rhombic EPR spectra in the solid state at RT and 77 K. But complex 2 shows tetragonal spectra in DMSO, DMF, and CH3CN. Thermogravimetric analysis was also performed for both complexes 1 and 2. Mean-square displacement amplitude analysis was carried out to detect librational disorder along the metal-ligand bonds in crystal structures.
Reversible Switching of Electronic Ground State in a Pentacoordinated Cu(II) 1D Cationic Polymer and Structural Diversity / Ashok, Sasmal; Eugenio, Garribba; Rizzoli, Corrado; Samiran, Mitra. - In: INORGANIC CHEMISTRY. - ISSN 0020-1669. - 53:(2014), pp. 6665-6674. [10.1021/ic500377w]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2759505
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 14
  • ???jsp.display-item.citation.isi??? 14
social impact