Pyrazine-bridged Cu(<scp>ii</scp>) chains: diaquabis(<i>n</i>-methyl-2-pyridone)copper(<scp>ii</scp>) perchlorate complexes

Kirkman-Davis, Emma; Witkos, Faith; Selmani, Veli; Monroe, Jeffrey C.; Landee, Christopher P.; Polson, Matthew I. J.; Wikaira, Jan L.

doi:10.1039/d0dt02716b

Cited by 9 publications

(2 citation statements)

References 53 publications

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“…In order to develop magneto-structural correlations for the all-pyrazine bridged ladders, a large number of complexes need to be synthesized where the ligand L is varied to give either overall withdrawing or donating properties. The same process is underway with complexes of the types [Cu(pz)(L) 2 (H 2 O) 2 ](ClO 4 ) 2 , 49 [Cu(pz)(L) 4 ](ClO 4 ) 2 , and [Cu(pz) 2 (L) 2 ](ClO 4 ) 2 .…”

Section: Resultsmentioning

confidence: 99%

Approaching the isotropic spin-ladder regime: structure and magnetism of all-pyrazine-bridged copper(ii)-based antiferromagnetic ladders

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Approaching the isotropic spin-ladder regime: structure and magnetism of all-pyrazine-bridged copper(ii)-based antiferromagnetic ladders

et al. 2022

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“…The values of the numerator (N i ) and denominator (D i ) in Equation ( 1) are tabulated elsewhere [30]. Cu(II)-based polymers provide good models for exploring such behaviour [31][32][33], and comprise one of the most well-studied 1D systems to date [26,[34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structural, Magnetic and Computational Studies of a One-Dimensional Ferromagnetic Cu(II) Chain Assembled from a New Schiff Base Ligand

et al. 2023

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A new asymmetrically substituted ONOO Schiff base ligand N-(2′-hydroxy-1′-naphthylidene)-3-amino-2-naphthoic acid (nancH2) was prepared from the condensation of 2–hydroxy–1–naphthaldehyde and 3–amino–2–naphthoic acid. nancH2 reacts with Cu2(O2CMe)4·2H2O in the presence of Gd(O2CMe)3·6H2O to afford a uniform one-dimensional homometallic chain, [CuII(nanc)]n (1). The structure of 1 was elucidated via single crystal X-ray diffraction studies, which revealed that the Cu(II) ions adopt distorted square planar geometries and are coordinated in a tridentate manner by an [ONO] donor set from one nanc2− ligand and an O− of a bridging carboxylate group from a second ligand. The bridging carboxylato group of the nanc2− ligand adopts a syn, anti-η1:η1:μ conformation linking neighboring Cu(II) ions, forming a 1D chain. The magnetic susceptibility of 1 follows Curie–Weiss law in the range 45–300 K (C = 0.474(1) emu K mol-1, θ = +7.9(3) K), consistent with ferromagnetic interactions between S = ½ Cu(II) ions with g = 2.248. Subsequently, the data fit well to the 1D quantum Heisenberg ferromagnetic (QHFM) chain model with g = 2.271, and J = +12.3 K. DFT calculations, implementing the broken symmetry approach, were also carried out on a model dimeric unit extracted from the polymeric chain structure. The calculated exchange coupling via the carboxylate bridge (J = +13.8 K) is consistent with the observed ferromagnetic exchange between neighbouring Cu(II) centres.

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Synthesis, structure and magnetic properties of catena-diaqua-bis(pyridine-N-oxide)(μ-pyrazine)copper(II) perchlorate and the monomeric structure tetrakis(pyridine-N-oxide)copper(II) perchlorate

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Kirkman-Davis

Polson

et al. 2020

Journal of Coordination Chemistry

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Pyrazine-bridged Cu(ii) chains: diaquabis(n-methyl-2-pyridone)copper(ii) perchlorate complexes

Abstract: A family of pyrazine-bridged, linear chain complexes of Cu(II) of the formula [CuL2(H2O)2(pz)](ClO4)2 [pz = pyrazine; L = n-methyl-2(1H)-pyridone, n = 3 (1), 5 (2), and 6 (3)] has been...

Cited by 9 publications

References 53 publications

Approaching the isotropic spin-ladder regime: structure and magnetism of all-pyrazine-bridged copper(ii)-based antiferromagnetic ladders

Approaching the isotropic spin-ladder regime: structure and magnetism of all-pyrazine-bridged copper(ii)-based antiferromagnetic ladders

Synthesis, Structural, Magnetic and Computational Studies of a One-Dimensional Ferromagnetic Cu(II) Chain Assembled from a New Schiff Base Ligand

Synthesis, structure and magnetic properties of catena-diaqua-bis(pyridine-N-oxide)(μ-pyrazine)copper(II) perchlorate and the monomeric structure tetrakis(pyridine-N-oxide)copper(II) perchlorate

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