titoli, abstracts, parole chiave >>>
Reversible switching of electronic ground state in a pentacoordinated Cu(II) 1D cationic polymer and structural diversity

Sasmal, Ashok and Garribba, Eugenio and Rizzoli, Corrado and Mitra, Samiran (2014) Reversible switching of electronic ground state in a pentacoordinated Cu(II) 1D cationic polymer and structural diversity. Inorganic Chemistry, Vol. 53 (13), p. 6665-6674. eISSN 1520-510X. Article.

Full text not available from this repository.

DOI: 10.1021/ic500377w

Abstract

Two copper(II) polymeric complexes {[Cu(HPymat)(MeOH)](NO3)}n (1) and {[Cu4(Pymab)4(H2O)4](NO3)4} (2) were synthesized with the carboxylate-containing Schiff-base ligands HPymat– and Pymab– [H2Pymat = (E)-2-(1-(pyridin-2-yl)methyleneamino)terephthalic acid, HPymab = (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 tetranuclear cationic Cu(II) 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.

Item Type:Article
ID Code:9918
Status:Published
Refereed:Yes
Uncontrolled Keywords:Complexes {[Cu(HPymat)(MeOH)](NO3)}n (1), {[Cu4(Pymab)4(H2O)4](NO3)4} (2), electron paramagnetic resonance (EPR) spectra, tetragonal EPR spectra, dimethyl sulfoxide (DMSO), dimethylformamide (DMF)
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Chimica e Farmacia
Publisher:American Chemical Society
eISSN:1520-510X
Deposited On:25 Jun 2014 12:02

I documenti depositati in UnissResearch sono protetti dalle leggi che regolano il diritto d'autore

Repository Staff Only: item control page