A {CoII9CoIII3} dodecanuclear cluster based on o-vanillin oxime: Synthesis, structures and properties

Yu, Li; Qin, Yaru; Wang, Yong; Liu, Wei; Li, Yahong

doi:10.1016/j.poly.2016.03.034

Cited by 8 publications

(4 citation statements)

References 82 publications

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“…Although cyclic dodecanuclear zinc complexes have been reported as single molecules [52] and SBUs of POPs/MOFs, [53,54] these cyclic complexes are supported by mixed-ligand systems, such as a combination of pyrazole and 2-mercaptoethanol or isophthalate, diol, and DABCO. The molecular structures of cyclic complexes consisting of carboxylato ligands and other 3d metals, such as Mn, [55] Fe, [56] Co, [57][58][59] Ni, [60,61] and Co/Cr [62] have been determined. However, small bridging ligands such as alkoxido, [55,56] hydroxido, [58] and fluorido, [62] are often used to construct cyclic structures.…”

Section: Resultsmentioning

confidence: 99%

Linear, Planar, Orbicular, and Macrocyclic Multinuclear Zinc (Meth)acrylate Complexes

Iwasaki,

Suehisa,

Tadaoka

et al. 2024

Chemistry A European J

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Zinc carboxylate complexes are widely utilized as artificial models of metalloenzymes and as secondary building units of PCPs/MOFs. However, the relationship between the structure of the monodentate carboxylato ligand and the molecular arrangement of multinuclear zinc carboxylate complexes is not fully understood because of the coordination flexibility of the Zn ion and carboxylato ligands. Herein, we report the structural analysis of a series of complexes derived from zinc (meth)acrylate which has a linear infinite chain structure. The molecular structure of μ4‐oxido‐bridged tetranuclear complexes [Zn4(μ4‐O)(OCOR)6] revealed a distorted Zn4O core. Crystallization of zinc acrylate under aqueous conditions afforded a μ3‐hydroxido‐containing pentanuclear complex [Zn5(μ3‐OH)2(OCOR)8] as the repeating unit of an infinite sheet‐like structure in the solid state. It was also obtained by the hydrolysis of the μ4‐oxido‐bridged tetranuclear complex. In sharp contrast, the methacrylate analog retained the methacrylato ligands under aqueous crystallization conditions to form a macrocyclic dodecanuclear complex with methacrylato as the sole ligand.

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Section: Resultsmentioning

confidence: 99%

Linear, Planar, Orbicular, and Macrocyclic Multinuclear Zinc (Meth)acrylate Complexes

Iwasaki,

Suehisa,

Tadaoka

et al. 2024

Chemistry A European J

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“…71−75 The acetate anion is a versatile bridging group that can coordinate with metal ions to create various multinuclear transition metal complexes. 76,77 The magnetic anisotropy and magnetic relaxation dynamics can be controlled by tailoring the ligand around the metal ions.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Low nuclearity transition metal complexes with strong magnetic anisotropy and first-order angular momentum, such as high-spin Co(II)- or Fe(I/II/III)-based complexes, are used as the simplest nanomagnets. Cobalt(II) is a potential candidate for single-ion magnets due to its anisotropy, noninteger spin, and zero-field splitting. − Single molecule magnetic behavior is exhibited by Co II complexes with D < 0 under zero field above 2 K, − while those with D > 0 also exhibit slow magnetic relaxation behavior, but it requires a small direct-current (dc) field to exhibit similar properties. − The acetate anion is a versatile bridging group that can coordinate with metal ions to create various multinuclear transition metal complexes. , The magnetic anisotropy and magnetic relaxation dynamics can be controlled by tailoring the ligand around the metal ions. However, a rational approach merging experimental and theoretical studies still has to be developed …”

Section: Introductionmentioning

confidence: 99%

A Linear Trinuclear Acetate Bridged Cobalt Complex Containing Pyridine-Based Bicompartmental Ligand: Synthesis, Structural, Magnetic, and Electrocatalytic Oxygen Evolution Studies

Manohar,

Roy,

Bandyopadhyay

et al. 2024

Crystal Growth & Design

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The reaction of Co(OAc) 2 •4H 2 O, LH 2 , and Et 3 N in a 1.5:1:3 molar ratio affords a linear trinuclear complex, [Co 3 (L) 2 (μ-η 1 : η 1 -OAc) 2 (CH 3 CN) 2 ] (1). The synthesized complex was characterized by single crystal X-ray diffraction studies, and it exhibited better electrocatalytic activity for the oxygen evolution reaction (OER) compared with the catalyst, RuO 2 . The complex exhibits an overpotential of 380 mV at 10 mA cm −2 current density for the OER, which is better than that of RuO 2 (480 mV) under identical experimental conditions. The Tafel slope values of the complex and RuO 2 were calculated to determine the kinetics of the electrochemical reaction and were found to be 58 and 85 mV/dec, respectively, which implies its robust heterogeneous OER catalysis. The DC magnetic studies revealed that the coupling between the Co(II) ions through the dioxo bridges was found to be antiferromagnetic, and the best-fit yielded exchange interaction J = −3.077(3) cm −1 , zero field splitting parameters D 1 = 46.35(6) cm −1 and D 2 = 5.831(7) cm −1 , g = 2.56(2), θ = 90.3(1) °, and σ χT = 2.4 × 10 −5 . The positive values of D 2 are consistent with the orbital singlet ground term 4 A 2g in the octahedral coordination, which suggest that the central and terminal Co(II) ions show easy-plane anisotropies.

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“…Cobalt was considered to be a good choice as the metal ion due to the strong magnetic anisotropy property and to give intriguing magnetic characteristics of spin‐canting . To date, a large number of Co(II/III) clusters, Co 7 , Co 8 ,, Co 9 , Co 10 , Co 11 , Co 12 ,, Co 13 , Co 14 ,, Co 15 , Co 16 , Co 18 , Co 19 , Co 20 , Co 24 , Co 27 /Co 28 , Co 32 , Co 36 and Co 52 , have been reported.…”

Section: Introductionmentioning

confidence: 99%

A New Hourglass-Shaped Co(II)₁₅ Cluster Constructed From [1, 1′-Biphenyl]-2,2′-dicarboxylic Acid: Syntheses, Structures and Magnetic Properties

Feng

Shang

et al. 2017

ChemistrySelect

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A new Co(II)15 cluster, [Co15(L)9(OH)12(EtOH)8(H2O)4] (1) (H2L= [1, 1′‐biphenyl]‐2,2′‐dicarboxylic acid), has been synthesized from the reaction of H2L and Co(NO3)2.6H2O under solvothermal condition and characterized by X‐ray single crystal diffraction, IR spectra, thermogravimetric analysis, Powder X‐ray diffraction (PXRD), X‐ray photoelectron spectroscopy (XPS), and elemental analysis. The results show that the coordination chemistry of the multi‐dentate ligand H2L on Co(II) ion with the exist of μ3‐bridging mode of hydroxyl groups and the μ2‐carboxyl oxygen atom in the complex 1. The magnetic investigations of complex 1 has shown antiferromagnetic interactions between the cobalt centers, which indicate that complex 1 may be a good candidate for magnetic material.

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A {CoII9CoIII3} dodecanuclear cluster based on o-vanillin oxime: Synthesis, structures and properties

Cited by 8 publications

References 82 publications

Linear, Planar, Orbicular, and Macrocyclic Multinuclear Zinc (Meth)acrylate Complexes

Linear, Planar, Orbicular, and Macrocyclic Multinuclear Zinc (Meth)acrylate Complexes

A Linear Trinuclear Acetate Bridged Cobalt Complex Containing Pyridine-Based Bicompartmental Ligand: Synthesis, Structural, Magnetic, and Electrocatalytic Oxygen Evolution Studies

A New Hourglass-Shaped Co(II)₁₅ Cluster Constructed From [1, 1′-Biphenyl]-2,2′-dicarboxylic Acid: Syntheses, Structures and Magnetic Properties

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A {CoII9CoIII3} dodecanuclear cluster based on o-vanillin oxime: Synthesis, structures and properties

Cited by 8 publications

References 82 publications

Linear, Planar, Orbicular, and Macrocyclic Multinuclear Zinc (Meth)acrylate Complexes

Linear, Planar, Orbicular, and Macrocyclic Multinuclear Zinc (Meth)acrylate Complexes

A Linear Trinuclear Acetate Bridged Cobalt Complex Containing Pyridine-Based Bicompartmental Ligand: Synthesis, Structural, Magnetic, and Electrocatalytic Oxygen Evolution Studies

A New Hourglass-Shaped Co(II)15 Cluster Constructed From [1, 1′-Biphenyl]-2,2′-dicarboxylic Acid: Syntheses, Structures and Magnetic Properties

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A New Hourglass-Shaped Co(II)₁₅ Cluster Constructed From [1, 1′-Biphenyl]-2,2′-dicarboxylic Acid: Syntheses, Structures and Magnetic Properties