scholarly journals Three cobalt-based coordination polymers with tripodal carboxylate and imidazole-containing ligands: syntheses, structures, properties and DFT studies

RSC Advances ◽  
2019 ◽  
Vol 9 (66) ◽  
pp. 38902-38911 ◽  
Author(s):  
Long Tang ◽  
Huan-Huan Wang ◽  
Yu-Hao Fu ◽  
Yi-Tong Wang ◽  
JiJiang Wang ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Magnetic Behavior ◽  
Fluorescence Properties ◽  
Carboxylate Ligand ◽  
Dft Studies ◽  
3D Network ◽  
1D Chain ◽  
2D To 3D

The tripodal carboxylate ligand can be employed in Co(ii) salt/imidazole-containing ligand systems to generate 1D chain, 2D layer, and 2D to 3D network, and the fluorescence properties of 1–3 and magnetic behavior of 1 and 2 have been investigated.

Syntheses, structures, and magnetic properties of two unique Cu(ii)-based coordination polymers involving a crystal-to-crystal structural transformation from a 1D chain to a 3D network

2017 ◽  
Vol 46 (48) ◽  
pp. 17025-17031 ◽  
Author(s):  
Xu-Feng Yang ◽  
Min Liu ◽  
Hai-Bin Zhu ◽  
Cheng Hang ◽  
Yue Zhao
Keyword(s):  
Magnetic Properties ◽  
Structural Transformation ◽  
Coordination Polymers ◽  
Network Structure ◽  
Chain Structure ◽  
3D Network ◽  
1D Chain ◽  
Crystal Structural

Promoted by the DMF solvent, the 1D chain structure of 1 can be irreversibly transformed into the 3D sod network structure of 2 in a crystal-to-crystal fashion, which is accompanied by a drastic magnetic change.

Structural diversity and magnetic properties of six cobalt coordination polymers based on 2,2′-phosphinico-dibenzoate ligand

2016 ◽  
Vol 45 (48) ◽  
pp. 19500-19510 ◽  
Author(s):  
Zhao-Xi Wang ◽  
Lin-Fei Wu ◽  
Xuan Zhang ◽  
Feifei Xing ◽  
Ming-Xing Li
Keyword(s):  
Magnetic Properties ◽  
Spin Glass ◽  
Coordination Polymers ◽  
Magnetic Behavior ◽  
Structural Diversity ◽  
Antiferromagnetic Interaction ◽  
Spin Canting ◽  
1D Chain ◽  
Cobalt Coordination

Six novel cobalt–carboxylate–phosphinate coordination polymers exhibit 1D chain, 2D networks and 3D frameworks. With difference on their structures, the compounds show remarkable magnetic behavior diversity containing spin canting, spin glass, and antiferromagnetic interaction.

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.

scholarly journals Photoluminescent Coordination Polymers Based on Group 12 Metals and 1H-Indazole-6-Carboxylic Acid

Inorganics ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 20
Author(s):  
Antonio A. García-Valdivia ◽  
Estitxu Echenique-Errandonea ◽  
Gloria B. Ramírez-Rodríguez ◽  
José M. Delgado-López ◽  
Belén Fernández ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Coordination Polymers ◽  
Density Functional ◽  
Free Ligand ◽  
Emission Spectra ◽  
Point Of View ◽  
Theoretical Point ◽  
Fourier Transformed Infrared Spectroscopy ◽  
3D Network ◽  
The Stability

Two new coordination polymers (CPs) based on Zn(II) and Cd(II) and 1H-indazole-6-carboxylic acid (H2L) of general formulae [Zn(L)(H2O)]n (1) and [Cd2(HL)4]n (2) have been synthesized and fully characterized by elemental analyses, Fourier transformed infrared spectroscopy and single crystal X-ray diffraction. The results indicate that compound 1 possesses double chains in its structure whereas 2 exhibits a 3D network. The intermolecular interactions, including hydrogen bonds, C–H···π and π···π stacking interactions, stabilize both crystal structures. Photoluminescence (PL) properties have shown that compounds 1 and 2 present similar emission spectra compared to the free-ligand. The emission spectra are also studied from the theoretical point of view by means of time-dependent density-functional theory (TD-DFT) calculations to confirm that ligand-centred π-π* electronic transitions govern emission of compound 1 and 2. Finally, the PL properties are also studied in aqueous solution to explore the stability and emission capacity of the compounds.

Nickel(II) and manganese(II) 1D chain coordination polymers with 1,2,4,5-benzenetetracarboxylato anions

2003 ◽  
Vol 351 ◽  
pp. 242-250 ◽  
Author(s):  
Deping Cheng ◽  
Masood A Khan ◽  
Robert P Houser
Keyword(s):  
Coordination Polymers ◽  
1D Chain

scholarly journals Modulation of the Interlayer Structures and Magnetic Behavior of 2D Spin-Crossover Coordination Polymers [FeII(L)2PtII(CN)4] (Eur. J. Inorg. Chem. 5-6/2013)

2013 ◽  
Vol 2013 (5-6) ◽  
pp. n/a-n/a
Author(s):  
Ryo Ohtani ◽  
Masashi Arai ◽  
Hisayoshi Ohba ◽  
Akihiro Hori ◽  
Masaki Takata ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Spin Crossover ◽  
Magnetic Behavior

Syntheses, Characterization, and Fluorescence Properties of Four Divalent Lead Coordination Polymers based on Zwitterionic Ligands

2019 ◽  
Vol 645 (5) ◽  
pp. 523-528
Author(s):  
Xinshu Xia ◽  
Shan Liu ◽  
Kecai Xiong ◽  
Wenyan Cai ◽  
Tingyu Wei ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Fluorescence Properties
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