Cd(II) and Cu(II) coordination polymers based on a multidentate N-donor ligand: syntheses, crystal structures, optical band gaps, and photoluminescence
Wei-Qiu Kan
Shi-Zheng Wen
Hua-You Hu
Yu-He Kan
10.6084/m9.figshare.1418274.v3
https://tandf.figshare.com/articles/journal_contribution/Cd_II_and_Cu_II_coordination_polymers_based_on_a_multidentate_N_donor_ligand_syntheses_crystal_structures_optical_band_gaps_and_photoluminescence/1418274
<div><p>Four Cd(II)- and Cu(II)-containing coordination polymers (CPs) based on a multidentate N-donor ligand and varied dicarboxylate anions, [Cd(3,3′-tmbpt)(<i>p</i>-bdc)]·2.5H<sub>2</sub>O (<b>1</b>), [Cd(3,3′-tmbpt)(<i>m</i>-bdc)]·2H<sub>2</sub>O (<b>2</b>), [Cu(3,3′-tmbpt)(<i>m</i>-bdc)]·H<sub>2</sub>O (<b>3</b>), and [Cu(3,3′-tmbpt)(<i>p</i>-bdc)]·2H<sub>2</sub>O (<b>4</b>), where 3,3′-tmbpt = 1 − ((1<i>H</i>-1,2,4-triazol-1-yl)methyl)-3,5-bis(3-pyridyl)-1,2,4-triazole, <i>p</i>-H<sub>2</sub>bdc = 1,4-benzenedicarboxylic acid, and <i>m</i>-H<sub>2</sub>bdc = 1,3-benzenedicarboxylic acid, have been prepared hydrothermally. The structures of the compounds were determined by single-crystal X-ray diffraction analyses and further characterized by infrared spectra and elemental analyses. Compound <b>1</b> exhibits a 3-D twofold interpenetrating framework with a 6<sup>5</sup>·8 CdSO<sub>4</sub> topology. Compound <b>2</b> is a 2-D layer containing meso-helical chains with a 4<sup>4</sup>·6<sup>2</sup> sql topology. Compound <b>3</b> shows a 1-D → 3-D interdigitated architecture while <b>4</b> displays a 2-D → 3-D interdigitated architecture. The structural differences of the compounds indicate that the dicarboxylate anions and the central metal ions play important roles in the resulting structures of CPs. Optical band gaps and solid-state photoluminescent properties have also been studied.</p></div>
2015-07-09 08:04:47
coordination
ligand
compound
multidentate
interdigitated
Compound 1 exhibits
acid
2BDC
analyses
topology
Optical band gaps
cp
dicarboxylate anions
cu
polymer