Mechanochemical Synthesis of 3d Transition-Metal-1,2,4-Triazole Complexes as Precursors for Microwave-Assisted and Thermal Conversion to Coordination Polymers with a High Influence on the Dielectric Properties

2016 ◽  
Vol 22 (8) ◽  
pp. 2708-2718 ◽  
Author(s):  
Franziska A. Brede ◽  
Johanna Heine ◽  
Gerhard Sextl ◽  
Klaus Müller-Buschbaum
Keyword(s):  
Dielectric Properties ◽  
Transition Metal ◽  
Coordination Polymers ◽  
Mechanochemical Synthesis ◽  
Thermal Conversion ◽  
Microwave Assisted ◽  
High Influence

Mechanochemical and thermal formation of 1H-benzotriazole coordination polymers and complexes of 3d-transition metals with intriguing dielectric properties

2016 ◽  
Vol 45 (26) ◽  
pp. 10609-10619 ◽  
Author(s):  
Franziska A. Brede ◽  
Friedrich Mühlbach ◽  
Gerhard Sextl ◽  
Klaus Müller-Buschbaum
Keyword(s):  
Dielectric Properties ◽  
Transition Metal ◽  
Transition Metals ◽  
Coordination Polymers ◽  
Metal Chlorides

Liquid-assisted grinding reactions yield a series of complexes and coordination polymers from divalent transition metal chlorides and benzotriazole that have diverse dielectric properties.

scholarly journals Pyrene Carboxylate Ligand Based Coordination Polymers for Microwave-Assisted Solvent-Free Cyanosilylation of Aldehydes

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 1101
Author(s):  
Anirban Karmakar ◽  
Anup Paul ◽  
Elia Pantanetti Sabatini ◽  
M. Fátima C. Guedes da Silva ◽  
Armando J. L. Pombeiro
Keyword(s):  
Coordination Polymer ◽  
Single Crystal ◽  
Coordination Polymers ◽  
Metal Ion ◽  
Solvent Free ◽  
Lewis Acidity ◽  
Carboxylate Ligand ◽  
X Ray Diffraction ◽  
X Ray ◽  
Microwave Assisted

The new coordination polymers (CPs) [Zn(μ-1κO1:1κO2-L)(H2O)2]n·n(H2O) (1) and [Cd(μ4-1κO1O2:2κN:3,4κO3-L)(H2O)]n·n(H2O) (2) are reported, being prepared by the solvothermal reactions of 5-{(pyren-4-ylmethyl)amino}isophthalic acid (H2L) with Zn(NO3)2.6H2O or Cd(NO3)2.4H2O, respectively. They were synthesized in a basic ethanolic medium or a DMF:H2O mixture, respectively. These compounds were characterized by single-crystal X-ray diffraction, FTIR spectroscopy, thermogravimetric and elemental analysis. The single-crystal X-ray diffraction analysis revealed that compound 1 is a one dimensional linear coordination polymer, whereas 2 presents a two dimensional network. In both compounds, the coordinating ligand (L2−) is twisted due to the rotation of the pyrene ring around the CH2-NH bond. In compound 1, the Zn(II) metal ion has a tetrahedral geometry, whereas, in 2, the dinuclear [Cd2(COO)2] moiety acts as a secondary building unit and the Cd(II) ion possesses a distorted octahedral geometry. Recently, several CPs have been explored for the cyanosilylation reaction under conventional conditions, but microwave-assisted cyanosilylation of aldehydes catalyzed by CPs has not yet been well studied. Thus, we have tested the solvent-free microwave-assisted cyanosilylation reactions of different aldehydes, with trimethylsilyl cyanide, using our synthesized compounds, which behave as highly active heterogeneous catalysts. The coordination polymer 1 is more effective than 2, conceivably due to the higher Lewis acidity of the Zn(II) than the Cd(II) center and to a higher accessibility of the metal centers in the former framework. We have also checked the heterogeneity and recyclability of these coordination polymers, showing that they remain active at least after four recyclings.

Synthesis, spectral and thermal aspect of transition metal coordination polymers with bis-hydrazone ligand

2015 ◽  
Vol 3 (4) ◽  
pp. 287-299 ◽  
Author(s):  
Sudhir S. Bhuyar ◽  
Smita S. Kharkale-Bhuyar ◽  
Ratiram Gomaji Chaudhary ◽  
Nilesh V. Gandhare ◽  
Harjeet D. Juneja ◽  
...  
Keyword(s):  
Transition Metal ◽  
Coordination Polymers ◽  
Metal Coordination ◽  
Hydrazone Ligand ◽  
Metal Coordination Polymers

Transition metal carboxylate coordination polymers with amide-bridged polypyridine co-ligands: assemblies and properties

CrystEngComm ◽  
2015 ◽  
Vol 17 (21) ◽  
pp. 3887-3907 ◽  
Author(s):  
Ju-Wen Zhang ◽  
Xiao-Min Kan ◽  
Xiao-Li Li ◽  
Jian Luan ◽  
Xiu-Li Wang
Keyword(s):  
Transition Metal ◽  
Coordination Polymers ◽  
Metal Carboxylate
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