Crystal Structure and Magnetic Exchange in the Single Chloride‐Bridged Copper(II) Chain Compound [CuCl<sub>2</sub>(TzHy)] [TzHy = (4,5‐dihydro‐1,3‐thiazol‐2‐yl)hydrazine]

Barros-García, F.J.; Bernalte‐García, A.; Híges-Rolando, F.J.; Luna‐Giles, F.; Pizarro-Galán, A.M.; Viñuelas-Zahı́nos, E.

doi:10.1002/zaac.200500119

Cited by 28 publications

(12 citation statements)

References 45 publications

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“…The magnetic and structural data for [Cu(2pymehist)Cl](ClO 4 ) are consistent with the reduced number of exchange pathways involving mono‐μ‐chloro‐bridged linear chain compounds of copper(II) already described in literature 27c,34. Although there is a large body of data for chain compounds, there are few examples of both structural and magnetically characterised copper(II) chain complexes containing mono(μ‐halo) bridges, and magneto‐structural correlations in chains have not been developed in the same detail as those already carried out for dinuclear copper(II) systems 32.…”

Section: Resultssupporting

confidence: 86%

A Chloro‐Bridged Linear Chain Imine‐Copper(II) Complex and Its Application as an Enzyme‐Free Amperometric Biosensor for Hydrogen Peroxide

et al. 2009

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The synthesis, structural characterisation and magnetic properties of a new chloro‐bridged linear chain imine‐copper(II) compound are reported. The results indicate that uniform chains are formed by stacking of parallel pyramidal units formed from the copper centre coordinated to the imine ligands and bridged by chloride ions, with the uncoordinated perchlorate ions located between the layers to balance the charge. Magnetic measurements carried out on a powder sample at temperatures from 1.8 to 290 K and a field of 500 Oe, indicated an intramolecular magnetic coupling between the copper centres [J/k = (–12.3 ± 0.2) K]. Moreover, an antiferromagnetic interaction can also be observed between the polynuclear arrays [J′ z/k = –(10.4 ± 1.7) K]. An analysis of the sample at high temperature indicated that the overall interaction would be antiferromagnetic (ΘCW = –14 K). Furthermore, this new inorganic‐organic zigzag polymer was linked covalently to the poly(N‐vinylimidazole) polymer, PVI, on a vitreous carbon electrode surface and used as a biomimetic material for the efficient analytical determination of hydrogen peroxide. Raman spectroscopy and electrochemical techniques were used to give a complete characterisation of the hybrid film obtained. The proposed enzyme‐free biosensor for catalase‐like activity exhibited good sensitivity (268 mA mol–1 L cm–2) at –0.4 V relative to the. SCE in a phosphate buffer solution (pH 7.0) and a wide linear range from 1 to 30 mmol L–1 for hydrogen peroxide detection.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)

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Section: Resultssupporting

confidence: 86%

A Chloro‐Bridged Linear Chain Imine‐Copper(II) Complex and Its Application as an Enzyme‐Free Amperometric Biosensor for Hydrogen Peroxide

et al. 2009

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“…Magnetic interactions of copper(II) centers mediated by one ,,,,− or two Cl– bridges ,,,,, have been studied. The most promising structural feature that determines the character and strength of the magnetic interaction is the ratio between the angle at the Cu II –Cl–Cu II bridge (θ) and longer Cu–Cl distance ( R ).…”

Section: Resultsmentioning

confidence: 99%

Structural, Electrical, and Magnetic Versatility of the Oxalate-Based [CuFe] Compounds Containing 2,2′:6′,2″-Terpyridine: Anion-Directed Synthesis

et al. 2020

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The heterodimetallic [CuFe] compounds [CuII 4(terpy)4Cl5][FeIII(C2O4)3]·10H2O (1;terpy = 2,2′:6′,2′′-terpyridine), [CuII 2(H2O)2(terpy)2(C2O4)][CuIIFeIII(CH3OH)(terpy)(C2O4)3]2 (2), and {[Cu2 IIFeIII(H2O)(terpy)2(C2O4)7/2]·6H2O} n (3) were obtained using building block approach, from reaction of aqueous solution of [Fe(C2O4)3]3– and a methanol solution containing Cu2+ ions and terpy by the layering technique. Interestingly, by changing only the anion of the starting salt of copper(II), Cu(NO3)2·3H2O instead of CuCl2·2H2O, an unexpected change in the type of bridge, oxalate (2 and 3) versus chloride (1), was achieved, thus affecting the overall structural architecture. Two polymorphs of 3D coordination polymer [CuIIFeII 2(H2O)(terpy)(C2O4)3] n (4), crystallizing in the triclinic (a) and monoclinic (b) space groups, were formed hydrothermally, depending on whether CuCl2·2H2O or Cu(NO3)2·3H2O was added to the water, besides K3[Fe(C2O4)3]·3H2O and terpy, respectively. Under hydrothermal conditions iron(III) from initial building block is reduced to the divalent state, creating 2D honeycomb [FeII 2(C2O4)3] n 2n– layers, which are bridged by [Cu(H2O)(terpy)]2+ cations. Compounds were investigated by single-crystal X-ray diffraction, IR, and impedance spectroscopies, magnetization measurements, and density functional theory (DFT) calculations. In compounds 1 and 2, 0D magnetism is observed, with 1 having a ground-state spin of 1 due to different interactions through chloride bridges of Cu2+ ions in tetramer [CuII 4(terpy)4Cl5]3+ and 2 showing strong antiferromagnetic coupling of Cu2+ ions mediated by oxalate ligand in [CuII 2(H2O)2(terpy)2(C2O4)]2+ and weak ones between Cu2+ and Fe3+ ions through oxalate bridge in [CuIIFeIII(CH3OH)(terpy)(C2O4)3]−. Polymer 4 exhibits antiferromagnetic phase transition at 25 K: The [FeII 2(C2O4)3] n 2n– layers are antiferromagnetically ordered, and a small amount of interlayer interaction is transferred through [Cu(H2O)(terpy)]2+ cations via Oox–Cu–Oox bridges. Additionally, compounds 1 and 2 are electrical insulators, while 4a and 4b show proton conductivity.

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“…Among studies focusing on magnetism, the structural motif of chlorido-bridged copper(II) compounds is well represented in doubly-bridged dimers [15,16] and in infinite chains [17,18,19,20,21] Hamiltonian H = J (S1•S2). As it is obvious from the fitted curve in Fig.…”

Section: Magnetic Measurementsmentioning

confidence: 99%

Coordination behavior of 1-(3,2′:6′,3″-terpyridin-4′-yl)ferrocene: Structure and magnetic and electrochemical properties of a tetracopper dimetallomacrocycle

et al. 2017

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The discrete coordination compound [Cu4Cl8(3)4(MeOH)2] is obtained from the reaction of a chloroform solution of 1-(3,2':6',3''-terpyridin-4'-yl)ferrocene (3) with a methanol solution of CuCl2; the single crystal structure of [{Cu4Cl8(3)4(MeOH)2}. 0.7CHCl3. 1.8MeOH] is described. Two {Cu2Cl4(3)2(MeOH)} units are connected by bridging chlorido ligands to generate a centrosymmetric tetranuclear molecule featuring face-to-face π-interactions between ferrocene units and between tpy domains. Intermolecular π-stacking of ferrocene and tpy units lead to quadruple-decker stacking motifs in the solid-state. The tetranuclear compound represents a pair of μ-Cl bridged Cu(II) dimers exhibiting a weak antiferromagnetic coupling via the bridging chlorido ligands. The redox behaviour of 3 has been investigated by cyclic voltammetry and spectroelectrochemistry; a ferrocenyl oxidation process is observed for [Cu4Cl8(3)4(MeOH)2].

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Crystal Structure and Magnetic Exchange in the Single Chloride‐Bridged Copper(II) Chain Compound [CuCl₂(TzHy)] [TzHy = (4,5‐dihydro‐1,3‐thiazol‐2‐yl)hydrazine]

Cited by 28 publications

References 45 publications

A Chloro‐Bridged Linear Chain Imine‐Copper(II) Complex and Its Application as an Enzyme‐Free Amperometric Biosensor for Hydrogen Peroxide

A Chloro‐Bridged Linear Chain Imine‐Copper(II) Complex and Its Application as an Enzyme‐Free Amperometric Biosensor for Hydrogen Peroxide

Structural, Electrical, and Magnetic Versatility of the Oxalate-Based [CuFe] Compounds Containing 2,2′:6′,2″-Terpyridine: Anion-Directed Synthesis

Coordination behavior of 1-(3,2′:6′,3″-terpyridin-4′-yl)ferrocene: Structure and magnetic and electrochemical properties of a tetracopper dimetallomacrocycle

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Crystal Structure and Magnetic Exchange in the Single Chloride‐Bridged Copper(II) Chain Compound [CuCl2(TzHy)] [TzHy = (4,5‐dihydro‐1,3‐thiazol‐2‐yl)hydrazine]

Cited by 28 publications

References 45 publications

A Chloro‐Bridged Linear Chain Imine‐Copper(II) Complex and Its Application as an Enzyme‐Free Amperometric Biosensor for Hydrogen Peroxide

A Chloro‐Bridged Linear Chain Imine‐Copper(II) Complex and Its Application as an Enzyme‐Free Amperometric Biosensor for Hydrogen Peroxide

Structural, Electrical, and Magnetic Versatility of the Oxalate-Based [CuFe] Compounds Containing 2,2′:6′,2″-Terpyridine: Anion-Directed Synthesis

Coordination behavior of 1-(3,2′:6′,3″-terpyridin-4′-yl)ferrocene: Structure and magnetic and electrochemical properties of a tetracopper dimetallomacrocycle

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Crystal Structure and Magnetic Exchange in the Single Chloride‐Bridged Copper(II) Chain Compound [CuCl₂(TzHy)] [TzHy = (4,5‐dihydro‐1,3‐thiazol‐2‐yl)hydrazine]