Cd(ii) and Cu(ii) coordination polymers constructed from the expanded 1, 4-bis(4-pyridyl)-2, 3-diaza-1, 3-butadiene ligand: conventional and ultrasound-assisted synthesis, crystal structure, luminescence and magnetic properties. (5th September 2018)

• Record Type: Journal Article
• Authors: Rad-Yousefnia, Negar; Shaabani, Behrouz; Zahedi, Mansoureh; Kubicki, Maciej; Aygün, Muhittin; Lloret, Francesc; Julve, Miguel; Grześkiewicz, Anita M.; Zakerhamidi, Mohammad Sadegh; Kazak, Canan
• Is Part Of: New journal of chemistry. Volume 42:Number 19(2018)
• Page Start: 15860
• Page End: 15870
• Publication Date: 2018-09-05
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c8nj02605j
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Metal nodes in extend 1D and 3D structures with N, N′-donor linker: the co-ligands decides! Abstract : A 3D open inorganic/organic framework, {[Cd(μ-L)(μ3 -SO4 )(H2 O)]·H2 O} n (1 ) [L = 1, 4-bis(4-pyridyl)-2, 3-diaza-1, 3-butadiene] was synthesized by the reaction of CdSO4 ·8H2 O with L. The treatment of Cu(NO3 )2 ·3H2 O with the same N, N′-donor ligand in two different solvent mixtures, methanol/dichloromethane (2 ) and methanol/chloroform (3 ), afforded two new ladder-like coordination polymers of formula {[Cu(μ-L)(μ-NO3 )(NO3 )]·solv} n [solv = CH2 Cl2 (2 ) and CHCl3 (3 )]. The non-interpenetrated ladder motifs2 and3 enclathrate the uncoordinated solvent molecules. Crystalline coordination polymers1 and3 were also successfully prepared by a sonochemical method under different reaction conditions. Our results indicate that the size of the particles is dependent on the irradiation time.1 and3 exhibit intense luminescent emissions in the solid state at room temperature. Cryomagnetic measurements of3 show the occurrence of a ferromagnetic interaction between the copper(ii ) ions through the double oxo-nitrate bridge together with a very weak inter-ladder antiferromagnetic interaction [ J = +4.93(2) cm −1, g = 2.10(1) and Θ = −0.567(5) K].