1632147-87-5Relevant academic research and scientific papers
Effect of phenylacetic acid coligands on the structures and magnetic properties of azido-bridged copper(ii)-chain compounds
Yang, Lan,Zhang, Sheng,Liu, Xiangyu,Yang, Qi,Wei, Qing,Xie, Gang,Chen, Sanping
, p. 4194 - 4201 (2014)
To explore and alter the structures of azido-copper(ii) chain compounds, as well as investigate how their magnetic properties are influenced by substituents on the phenylacetic acid coligands, three new azido-bridged Cu(ii) compounds, [Cu(o-npa)(N3)(H2O)]n (1), [Cu(p-npa)(N3)]n (2) and [Cu(p-mpa)(N3)] n (3) (o-Hnpa = o-nitrophenylacetic acid, p-Hnpa = p-nitrophenylacetic acid, and p-Hmpa = p-methylphenylacetic acid), have been successfully obtained, and structurally and magnetically characterized. Single-crystal structure analyses indicate that the azido ligands adopt the single end-on (EO) mode to connect adjacent Cu(ii) centers in all three compounds. In compounds 1 and 2, the carboxylate groups exhibit the same μ2-bridging bidentate mode. Although compound 2 exhibits a 2D layer-structure formed through connections between the p-NO2 groups on the aromatic rings and 1D Cu(ii)-chains, 2 shows similar intrachain ferromagnetic coupling to 1. When p-methylphenylacetic acid is employed as a coligand, compound 3 exhibits a 2D layer-structure, in which the carboxylate adopts a μ3-bridging tridentate mode to shorten the distance between Cu(ii)-chains. Due to the counter-complementarity of the superexchange pathways in this system, compound 3 behaves as a magnet with a spontaneous magnetization temperature of 7 K. This journal is the Partner Organisations 2014.
