Synthesis, X-ray structure and catecholase activity of an antiferromagnetically coupled trinuclear nickel(II) complex

Pal, Abhijit; Kumar, Sarat Chandra; Ghosh, Ayon Kanti; Lin, Chia Her; Rivière, Éric; Mallah, Talal; Ghosh, Rajarshi

doi:10.1016/j.poly.2016.03.012

Cited by 16 publications

(6 citation statements)

References 46 publications

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“…It is worth mentioning that ligand H L 2− may behave differently. This has been observed in the crystal structure recently reported for the Ni II ‐Ni II ‐Ni II centrosymmetric complex with formula [Ni 3 (H L ) 2 ( μ ‐AcO) 2 ], where outer metals are pentacoordinated (Pal et al ., 2016). Since the lack of monodentate AcO − ions prevents the formation of intramolecular hydrogen bonds, the OH groups in H L 2− form stabilizing intermolecular O−H⋅⋅⋅O phenoxo contacts.…”

Section: Resultsmentioning

confidence: 99%

“…Given that, such contacts are geometrically unfavoured for axial OH groups; this function is disordered over axial and equatorial positions in the chair metallacycle. Pal et al ., with data collected at 296 K, refined this disorder with occupancies of 0.5 for each site. We predetermined independently the structure of this compound at 150 K, and refined this disorder with an equatorial:axial ratio of 0.572(7):0.42 (7).…”

Section: Resultsmentioning

confidence: 99%

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Synthesis, Electronic, Magnetic and Structural Characterization of New Trinuclear Mixed‐Valence Co^III‐Co^II‐Co^III Complex.

et al. 2016

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The structural, electronic, magnetic and theoretical study of the complex [Co3(HL)2(μ‐AcO)2(AcO)2], 1, (HL is the dianion obtained by deprotonation of N,N’‐bis(salicylidene)‐2‐hydroxy‐1,3‐propanediamine and AcO is acetate) shows that 1 crystallizes with two independent molecules in the asymmetric unit. Each molecule is a trinuclear complex. Both molecules have similar geometry, and correspond to a spin system based on trapped mixed valences on six‐coordinate metal centres, CoIII(s=0)‐CoII(s=3/2)‐CoIII(s=0). The rigid framework formed by the tetradentate Salen‐type ligands HL and the syn‐syn bridging acetate anions is a characteristic feature observed in other related complexes. However, the here reported compound is the first one in this family having Z’>1. UV‐Vis spectrum shows a broad band in the visible region where d‐d transition for ions CoIII and CoII are. EPR spectra and the electronic energy estimations of the ground state show the presence of two conformers s=3/2. The χMT product at 300 K is 3.24 emu mol−1K per trinuclear unit, this product is expected for CoII where the contribution of orbital angular moment is taken into account (3.38 emu mol−1K for L=3).

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Synthesis, Electronic, Magnetic and Structural Characterization of New Trinuclear Mixed‐Valence Co^III‐Co^II‐Co^III Complex.

et al. 2016

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“…As shown in Fig. 2(a), the central Ni1 atom lies on the inversion centre and has an octahedral coordination environment formed by six O atoms [O2, O6, O9, O2 i , O6 i and O9 i ; symmetry code: (Rigamonti & Forni, 2018;Pal et al, 2016). The Ni1-O9-Ni2 angle is 113.63 (1) .…”

Section: Resultsmentioning

confidence: 99%

Structural diversity, magnetic properties and luminescence of Ni^II, Co^II and Zn^II coordination polymers derived from 3,3′-[(5-carboxy-1,3-phenylene)bis(oxy)]dibenzoic acid and 1,10-phenanthroline

Yang

Zhu

2019

Acta Crystallogr C

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Three novel coordination polymers (CPs), namely poly[[di-μ-aqua-bis{μ4-3,3′-[(5-carboxylato-1,3-phenylene)bis(oxy)]dibenzoato-κ5 O 1:O 1′,O 3:O 5:O 5′}bis(1,10-phenanthroline-κ2 N,N′)trinickel(II)] dimethylformamide 1.5-solvate trihydrate], {[Ni3(C21H11O8)2(C12H8N2)2(H2O)2]·1.5C3H7NO·3H2O} n , (I), poly[[di-μ-aqua-bis{μ4-3,3′-[(5-carboxylato-1,3-phenylene)bis(oxy)]dibenzoato-κ5 O 1:O 1′,O 3:O 5:O 5′}bis(1,10-phenanthroline-κ2 N,N′)tricobalt(II)] diethylamine disolvate tetrahydrate], {[Co3(C21H11O8)2(C12H8N2)2(H2O)2]·2C2H7N·4H2O} n , (II), and catena-poly[[aqua(1,10-phenanthroline-κ2 N,N′)zinc(II)]-μ-5-(3-carboxyphenoxy)-3,3′-oxydibenzoato-κ2 O 1:O 3], [Zn(C21H12O8)(C12H8N2)(H2O)] n , (III), have been synthesized by the reaction of different metal ions (Ni2+, Co2+ and Zn2+), 3,3′-[(5-carboxy-1,3-phenylbis(oxy)]dibenzoic acid (H3cpboda) and 1,10-phenanthroline (phen) under solvothermal conditions. All the CPs were characterized by elemental analysis, single-crystal and powder X-ray diffraction, FT–IR spectroscopy and thermogravimetric analysis. Complexes (I) and (II) have isomorphous structures, featuring similar linear trinuclear structural units, in which the central NiII/CoII atom is located on an inversion centre with a slightly distorted octahedral [NiO6]/[CoO6] geometry. This comprises four carboxylate O-atom donors from two cpboda3− ligands and two O-atom donors from bridging water molecules. The terminal NiII/CoII groups are each connected to the central NiII/CoII cation through two μ1,3-carboxylate groups from two cpboda3− ligands and one water bridge, giving rise to linear trinuclear [M 3(μ2-H2O)2(RCOO)4] (M = Ni2+/Co2+) secondary building units (SBUs) and the SBUs develop two-dimensional-networks parallel to the (100) plane via cpboda3− ligands with new (32·4)2(32·83·9)2(34·42.82·94·103) topological structures. Zinc complex (III) displays one-dimensional coordination chains and the five-coordinated Zn atom forms a distorted square-pyramidal [ZnO3N2] geometry, which is completed by two carboxylate O-atom donors from two distinct Hcpboda2− ligands, one O atom from H2O and two N atoms from a chelating phen ligand. Magnetically, CP (I) shows weak ferromagnetic interactions involving the carboxylate groups, and bridging water molecules between the nickel(II) ions, and CP (II) shows antiferromagnetic interactions between the Co2+ ions. The solid-state luminescence properties of CP (III) were examined at ambient temperature and the luminescence sensing of Cr2O7 2−/CrO4 2− anions in aqueous solution for (III) has also been investigated.

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“…L-Ni için ölçülen değer oktahedral nikel kompleksleri için verilen değerler aralığından (2.8-3.2 BM) oldukça düşüktür [44]. Nikel kompleksinin antiferromanyetik özellikte olduğu düşünülmektedir [45]. Literatürde nikel kompleksi için bulunan 1.08 BM değerine yakın oktahedral yapıya sahip yapılar bulunmaktadır [44].…”

Section: Materyalunclassified

Hidrazon Türevi Yeni Fe(II), Co(II), Ni(II) ve Cu(II) Komplekslerinin Sentezi ve Karakterizasyonu

Soğukömeroğulları

Başaran

2022

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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N-((2-hydroxynaphthalen-1-yl)methylene)nicotinohydrazide ligand derived from the condensation reaction of 2-hydroxynaphthaldehyde and nicotinic hydrazide was obtained. New hydrazone metal complexes L2Fe, L2Co, L2Ni and L2Cu2 were synthesized from the reaction of N-((2-hydroxynaphthalen-1-yl)methylene)nicotinohydrazide ligand and Fe(II), Co(II), Ni(II) and Cu(II) acetate salts in a 2:1 stoichiometric ratio, respectively. The synthesized compounds were characterized by techniques such as FT-IR, NMR (ligand only), UV-Vis, elemental analysis, molar conductivity measurement, magnetic susceptibility. Magnetic susceptibility measurements were recorded as 5.96 BM, 1.03 BM, 1.08 BM and 1.61 BM for the L2Fe, L2Co L2Ni and L2Cu2 complexes, respectively. It has been determined that the L2Cu2, L2Ni and L2Co complexes have antiferromagnetic properties. The L2Fe, L2Co and L2Ni complexes have octahedral geometry, while the L2Cu2 complex has a square plane geometry. The molar conductivity values of the complexes are between 1.31-2.61 μS/cm and do not have conductivity properties.

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Synthesis, X-ray structure and catecholase activity of an antiferromagnetically coupled trinuclear nickel(II) complex

Cited by 16 publications

References 46 publications

Synthesis, Electronic, Magnetic and Structural Characterization of New Trinuclear Mixed‐Valence Co^III‐Co^II‐Co^III Complex.

Synthesis, Electronic, Magnetic and Structural Characterization of New Trinuclear Mixed‐Valence Co^III‐Co^II‐Co^III Complex.

Structural diversity, magnetic properties and luminescence of Ni^II, Co^II and Zn^II coordination polymers derived from 3,3′-[(5-carboxy-1,3-phenylene)bis(oxy)]dibenzoic acid and 1,10-phenanthroline

Hidrazon Türevi Yeni Fe(II), Co(II), Ni(II) ve Cu(II) Komplekslerinin Sentezi ve Karakterizasyonu

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Synthesis, X-ray structure and catecholase activity of an antiferromagnetically coupled trinuclear nickel(II) complex

Cited by 16 publications

References 46 publications

Synthesis, Electronic, Magnetic and Structural Characterization of New Trinuclear Mixed‐Valence CoIII‐CoII‐CoIII Complex.

Synthesis, Electronic, Magnetic and Structural Characterization of New Trinuclear Mixed‐Valence CoIII‐CoII‐CoIII Complex.

Structural diversity, magnetic properties and luminescence of NiII, CoII and ZnII coordination polymers derived from 3,3′-[(5-carboxy-1,3-phenylene)bis(oxy)]dibenzoic acid and 1,10-phenanthroline

Hidrazon Türevi Yeni Fe(II), Co(II), Ni(II) ve Cu(II) Komplekslerinin Sentezi ve Karakterizasyonu

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Synthesis, Electronic, Magnetic and Structural Characterization of New Trinuclear Mixed‐Valence Co^III‐Co^II‐Co^III Complex.

Synthesis, Electronic, Magnetic and Structural Characterization of New Trinuclear Mixed‐Valence Co^III‐Co^II‐Co^III Complex.

Structural diversity, magnetic properties and luminescence of Ni^II, Co^II and Zn^II coordination polymers derived from 3,3′-[(5-carboxy-1,3-phenylene)bis(oxy)]dibenzoic acid and 1,10-phenanthroline