Mercury coordination polymers with flexible ethane-1,2-diyl-bis-(pyridyl-3-carboxylate): Synthesis, structures, thermal and luminescent properties

Vallejos, Javier; Brito, Iván; Cárdenas, Alejandro; Llanos, Jaime; Bolte, Michael; López-Rodríguez, Matías

doi:10.1016/j.jssc.2014.03.022

Cited by 8 publications

(3 citation statements)

References 24 publications

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“…It is the subtle steric and/or electronic control of the frameworks which motivated the present study of azines as organic ligands in HgĲII) chemistry. [15][16][17][18][19][20][21][22][23][24][25][26][27] In line with the above discussion, we have recently reported on the syntheses and self-assembly of some HgĲII) compounds under mild solvothermal conditions using an interesting and unusual glassware apparatus. 28 The Schiff base ligand (L) we previously used played an important role in the formation of coordination polymers with fascinating structures.…”

Section: Introductionmentioning

confidence: 77%

The role of unconventional stacking interactions in the supramolecular assemblies of Hg(ii) coordination compounds

et al. 2016

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In this study, nine mercuryĲII) complexes of the composition [HgĲL n )ĲX) 2 ] (X = Cl, Br and I, n = 1-3), (L 1 = 2-pyridine piconyl hydrazone); L 2 = (2-acetylpyridine piconyl hydrazone) and L 3 = (2-phenylpyridine piconyl hydrazone) are synthesized and spectroscopically characterized. Single-crystal X-ray crystallography showed that the molecular complexes can aggregate into larger entities depending upon the anion coordinated to the metal centre. Moreover, Hirshfeld surface (HS) analyses were employed to gain additional insight into interactions responsible for the packing of complexes 1-9. Quantitative examination of 2D fingerprint plots revealed, among others, the dominating participation of H⋯H and H⋯X interactions in the molecular packing. Moreover, C-H⋯X hydrogen bonds, π-π, and chelate-ring-π interactions are described and analysed by means of density functional theory (DFT) calculations since they play an important role in the construction of three-dimensional supramolecular frameworks. The influence of the halide on the energetic features of the assemblies has been also studied.

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Section: Introductionmentioning

confidence: 77%

The role of unconventional stacking interactions in the supramolecular assemblies of Hg(ii) coordination compounds

et al. 2016

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“…In continuation of our previous investigation on coordination polymers 13,14,[24][25][26][27] , in this work, we present the synthesis, structural characterization and energetic properties of the new coordination polymer strontium benzilate. Hirshfeld surface analysis 28 was used for visually analyzing intermolecular interactions in the crystal structure.…”

Section: Introductionmentioning

confidence: 93%

Synthesis, Crystal Structure and Hirshfeld Surface Analysis of a New Coordination Polymer: Strontium Benzilate

Delgado

Mora

Ramírez

et al. 2021

J. Chil. Chem. Soc.

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A novel coordination polymer was synthesized from strontium carbonate and benzylic acid in aqueous solution and is formulated as Sr[(C6H5)4(COCOO)2•2H2O]. This compound was characterized by FTIR spectroscopy and powder X-ray diffraction. The crystal structure was determined by single-crystal X-ray diffraction. The complex crystallizes in the monoclinic P21/n space group, with unit cell parameters a = 15.0224(9) Å, b = 7.5038(6) Å, c = 25.000(2) Å,  = 94.764(2)º, V = 2808.4 Å 3 , Z = 4. In the structure, the metallic ion is coordinated to eight oxygen atoms, six from benzilate molecules, and two from water molecules, forming a distorted tetragonal antiprism. One of the benzilates is coordinated to the metal in a monodentate fashion (carboxylate only), while the other benzilate molecule does it in the bidentate from carboxylate and hydroxide. Strontium ions form infinite zigzag chains along the 010 direction, which form a three-dimensional network via O-H•••O hydrogen-bond interactions between the coordinated water molecules and the O atoms of the carboxylate groups. The intermolecular interactions were analyzed using Hirshfeld surface analysis.

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“…Luminescent Zn(II) complexes are used for the production of organic light-emitting diodes (OLED) [ 32 , 33 , 34 , 35 , 36 , 37 ]. Our previous studies show how the isomeric position of ethyl 5-methyl-1-(pyridin-3-yl)-1H-1,2,3-triazole-3-carboxylate/-4-carboxylate type organic ligands has allowed for the obtaining of monodimensional Cd(II) CPs to supramolecular 3D networks with the consequent modification of their emission [ 28 , 38 , 39 , 40 , 41 ]. We have now selected Zn(II) as the d 10 metal center and, as the flexible organic ligand, the tecton, 5-methyl-1-(pyridine-3-ylmethyl)-1 H -1,2,3-triazole -4-carboxylate (Na L1 ), and 5-methyl-1-(pyridin-4-ylmethyl)-1 H -1,2,3-triazole -4-carboxylate (Na L2 ) two positional isomers.…”

Section: Introductionmentioning

confidence: 99%

The Methylene Spacer Matters: The Structural and Luminescent Effects of Positional Isomerism of n-Methylpyridyltriazole Carboxylate Semi-Rigid Ligands in the Structure of Zn(II) Based Coordination Polymers

et al. 2023

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Two Zn(II) coordination polymers (CPs) based on n-methylpyridyltriazole carboxylate semi-rigid organic ligands (n-MPTC), with n = 3 (L1) and 4 (L2), have been prepared at the water n-butanol interphase by reacting Zn(NO3)2·4H2O with NaL1 and NaL2. This allows us to systematically investigate the influence of the isomeric positional effect on their structures. The organic ligands were obtained by saponification from their respective ester precursors ethyl-5-methyl-1-(pyridin-3-ylmethyl)-1H-1,2,3-triazole-4-carboxylate (P1) and ethyl-5-methyl-1-(pyridin-4-ylmethyl)-1H-1,2,3-triazole-4-carboxylate (P2), resulting in their corresponding sodium salt forms, 3-MPTC, and 4-MPTC. The structure of the Zn(II) CPs determined by single-crystal X-ray diffraction reveals that both CPs have 2D supramolecular hydrogen bond networks. The 2D supramolecular network of [Zn(L1)]n (1) is built up by hydrogen bond interactions between oxygen and hydrogen atoms between neighboring n-methylpyridyltriazole molecules, whereas in [Zn(L2)·4H2O]n (2) the water molecules link 1D polymeric chains forming a 2D supramolecular aggregate. The structures of 1 and 2 clearly show that the isomeric effect in the semi-rigid ligands plays a vital role in constructing the Zn(II) coordination polymers, helped by the presence of the methylene spacer group, in the final structural conformation. The structures of 1 and 2 significantly affect their luminescent properties. Thus, while 2 shows strong emission at room temperature centered at 367 nm, the emission of 1 is quenched substantially.

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Mercury coordination polymers with flexible ethane-1,2-diyl-bis-(pyridyl-3-carboxylate): Synthesis, structures, thermal and luminescent properties

Cited by 8 publications

References 24 publications

The role of unconventional stacking interactions in the supramolecular assemblies of Hg(ii) coordination compounds

The role of unconventional stacking interactions in the supramolecular assemblies of Hg(ii) coordination compounds

Synthesis, Crystal Structure and Hirshfeld Surface Analysis of a New Coordination Polymer: Strontium Benzilate

The Methylene Spacer Matters: The Structural and Luminescent Effects of Positional Isomerism of n-Methylpyridyltriazole Carboxylate Semi-Rigid Ligands in the Structure of Zn(II) Based Coordination Polymers

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