Copper(II) and Cadmium(II) Complexes Based on N,N‐Bis(3, 5‐dimethyl‐2‐hydroxybenzyl)‐N‐(2‐pyridylmethyl)amine Ligand: Syntheses, Structures, Magnetic, and Luminescent Properties

Abstract

The reaction of the aryl-oxide ligand H 2 L [H 2 L = N,Nbis(3,5-dimethyl-2-hydroxybenzyl)-N-(2-pyridylmethyl)amine] with CuSO 4 ·5H 2 O, CuCl 2 ·2H 2 O, CuBr 2 , CdCl 2 ·2.5H 2 O, and Cd(OAc) 2 · 2H 2 O, respectively, under hydrothermal conditions gave the complexes [1833 methyl)phenoxy)-4,6-dimethylphenol] were derived from the solvothermal in situ metal/ligand reactions. These complexes were characterized by IR spectroscopy, elementary analysis, and X-ray diffraction. A low-temperature magnetic susceptibility measurement for the solid sample of 2 revealed antiferromagnetic interactions between two central copper(II) atoms. The emission property studies for complexes 4 and 5 indicated strong luminescence emission.

Activation of the Cyano Group at Imidazole via Copper Stimulated Alcoholysis

“…The nitrogen-halogen distances at basal planes are almost symmetrical in all compounds. The axial bond lengths of Cu1-X' and Cu1-O2 lie in a similar range to earlier published values [36][37][38][39][40][41][42][43][44]. As expected, the bond distances between the metal center and halogen atoms in the equatorial position are shorter than in the apical position.…”

“…All calculations were performed by applying Gaussian 09 software package [53]. The optimized geometry and simulated non-scaled infrared spectra for the copper(II) complexes were obtained by PBE0 functional [54] with 6-311+(d) basis set for non-metal atoms and Def2-TZVPPD basis set [31][32][33][34][35][36] for copper atom.…”

Zinc, cadmium and mercury

“…34 Two unusual azidebridged complexes with open-cubane type cores (26 and 27) have been reported, and shown to exhibit fluorescence around 270 nm. 35 Other notable polynuclear complexes include [Cd 4 (m-Tab) 6 (Tab) 4 ](PF 6 ) 8 (Tab = Me 3 NC 6 H 4 S), which adopts an adamantine-like structure, 36 38 Among numerous efforts in pursuit of coordination polymers, the reaction of CdCl 2 with P(CH 2 OH) 3 has been studied using 31 P and 111 Cd NMR spectroscopy, revealing formation of the first polymers of the OP(CH 2 OH) 3 ligand; 39 the molecular 2-pyrazinephosphonates [Cd(C 4 H 5 N 2 PO 3 )(OH 2 )] and [Cd(C 4 H 5 N 2 PO 3 )Cl]ÁH 2 O have also been prepared, 40 as have several complexes of pyridylmethyl-derived ligands, 41,42 all exhibiting promising luminescent behaviour. Ligand-rich polymers [Cd(NCE) 2 (pyrimidine) 2 ] n (E = S, Se) have been prepared and shown to exhibit a range of topologies, with efforts made to explore their thermal degradation to 'ligand-deficient' species.…”