Cyanide vs. azide “magnetic arm wrestling”: MnII–NbIV and MnII–MoIV magnetic coordination polymers with mixed bridging

2017 ◽  
Vol 53 (70) ◽  
pp. 9753-9756 ◽  
Author(s):  
Gabriela Handzlik ◽  
Marcin Kozieł ◽  
Anna Olejniczak ◽  
Barbara Sieklucka ◽  
Dawid Pinkowicz
Keyword(s):  
Coordination Polymer ◽  
Magnetic Structure ◽  
Coordination Polymers ◽  
Magnetic Coupling ◽  
Magnetic Behavior

The magnetic coupling abilities of cyanide and azide are put to the test within an unprecedented cyanide–azide bimetallic coordination polymer. The resulting non-trivial magnetic behavior suggests a non-collinear magnetic structure arising from the competing antiferromagnetic interactions through the cyanide and azide.

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.

Hydrothermal synthesis, structure and magnetic properties of a three-dimensional cobalt(ii) – aminophenyltetrazolate coordination polymer

2014 ◽  
Vol 43 (19) ◽  
pp. 7263-7268 ◽  
Author(s):  
Tiffany M. Smith ◽  
Michael Tichenor ◽  
Yuan-Zhu Zhang ◽  
Kim R. Dunbar ◽  
Jon Zubieta
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Hydrothermal Synthesis ◽  
Coordination Polymer ◽  
Three Dimensional ◽  
Magnetic Behavior ◽  
Ac Magnetic Susceptibility

The three-dimensional [Co3(OH)2(H2O)2(aptet)4] exhibits magnetic properties consistent with a ferrimagnetic chain with the non-compensating resultant moment of one Co(ii) per trinuclear Co(ii) subunit and ac magnetic susceptibility indicative of glassy-like magnetic behavior.

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

Coordination-induced emission enhancement in copper(I) iodide coordination polymers supported by 2-(alkylsulfanyl)pyrimidines

2021 ◽  
Author(s):  
Katerina A. Vinogradova ◽  
Nikita Shekhovtsov ◽  
Alexey Sergeevich Berezin ◽  
Taisiya Sukhikh ◽  
Maxim I. Rogovoy ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Coordination Polymers ◽  
Molar Ratios ◽  
Emission Enhancement

First examples of copper(I) complexes with 2-(alkylsulfanyl)pyrimidine ligands have been synthesized. Reactions of copper(I) iodide with 2-(methylsulfanyl)pyrimidine (L1) in various metal-to-ligand molar ratios in MeCN afford a ladder-type coordination polymer...

Ferromagnetic ordering of –[Sm(iii)-radical]n– coordination polymers

2016 ◽  
Vol 52 (31) ◽  
pp. 5414-5417 ◽  
Author(s):  
Elisabeth M. Fatila ◽  
Adam C. Maahs ◽  
Michelle B. Mills ◽  
Mathieu Rouzières ◽  
Dmitriy V. Soldatov ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Coordination Polymers ◽  
Ferromagnetic Ordering

A structurally characterized lanthanide-radical coordination polymer exhibits ferromagnetic ordering. Superexchange and McConnel I mechanisms are implicated.

A new twofold interpenetrated two-dimensional cadmium(II) coordination polymer constructed from 2,2′-(benzene-1,4-dicarboxamido)dipropionate

2018 ◽  
Vol 74 (11) ◽  
pp. 1434-1439
Author(s):  
Hong-Tao Zhang ◽  
Xiao-Long Wang
Keyword(s):  
Coordination Polymer ◽  
Coordination Polymers ◽  
Self Assembly ◽  
Fluorescence Emission ◽  
Functional Materials ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Carboxylate Groups ◽  
Potential Applications

In recent years, much initial interest and enthusiasm has focused on the self-assembly of coordination polymers due to the aesthetics of their crystalline architectures and their potential applications as new functional materials. As part of an exploration of chiral coordination polymers, a new twofold interpenetrated two-dimensional (2D) coordination polymer, namely, poly[[tetraaquabis[μ3-(2R,2′R)-2,2′-(benzene-1,4-dicarboxamido)dipropionato-κ5 O,O′:O′′,O′′′:O′′]dicadmium(II)] trihydrate], {[Cd2(C14H14N2O6)2(H2O)4]·3H2O} n , has been synthesized by the reaction of Cd(CH3COO)2·2H2O with the designed ligand (2R,2′R)-2,2′-(benzene-1,4-dicarboxamido)dipropionic acid (H2 L). The compound has been structurally characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction and single-crystal X-ray diffraction analysis. In the crystal structure, each CdII cation binds to three carboxylate groups from two crystallographically independent L 2− dianions. Four carboxylate groups link two crystallographically independent cadmium cations into a 4,4-connected secondary building unit (SBU). The resulting SBUs are extended into a two-dimensional folding sheet via the terephthalamide moiety of the ligand as a spacer, which can be simplified as a (4,4)-connected 4,4L15 net with the point symbol (3.53.62)(32.52.62). In the lattice, two independent folding sheets interpenetrate each other to yield a double-sheet layer. The resulting 2D layers pack in parallel arrays through intermolecular hydrogen bonds and interlayer π–π interactions. The thermal stability and photoluminescence properties of the title compound have been investigated and it exhibits an enhanced fluorescence emission and a longer lifetime compared with free H2 L.

scholarly journals Spectrally-resolved third-harmonic generation and the fundamental role of O–H⋯Cl hydrogen bonding in Oh, Td-cobalt(ii) tetraphenylmethane-based coordination polymers

2017 ◽  
Vol 46 (29) ◽  
pp. 9349-9357 ◽  
Author(s):  
J. K. Zaręba ◽  
J. Janczak ◽  
M. Samoć ◽  
M. Nyk
Keyword(s):  
Hydrogen Bonding ◽  
Coordination Polymer ◽  
Harmonic Generation ◽  
Coordination Polymers ◽  
Third Harmonic Generation ◽  
Third Harmonic ◽  
Spectrally Resolved

The structural, topological and spectrally-resolved THG properties of the Oh, Td-cobalt(ii) tetraphenylmethane-based coordination polymer have been characterized.

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