Different dimensionality in Mn(II), Co(II) and Ni(II) aminoisophthalate metal–organic compounds: Synthesis, characterization and gas adsorption properties

Günay, Handan; Çolak, Alper Tolga; Yeşılel, Okan Zafer; Keskin, Seda; Büyükgüngör, Orhan

doi:10.1016/j.poly.2012.08.071

Cited by 11 publications

(4 citation statements)

References 38 publications

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“…Finally, the presence of an intense and well-defined charge transfer band at 410 nm in the UV–vis spectrum is consistent with a metal-to-ligand charge transfer band where a d-based electron in the e orbital is excited into the vacancy in the low-lying π orbital (Figure ). Thus, the assignment as a high-spin d 7 Co(II) complex of a noninnocent ligand is consistent with X-ray crystallographic metrics, measured values of magnetic susceptibility, EPR, IR, and UV–vis absorption spectra and corroborated by a wealth of existing literature on the geometric behavior of Co(II) vs Co(III) coordination complexes. − …”

Section: Resultssupporting

confidence: 80%

“…The long 2.02 Å contact in the title complex is more consistent with a neutral nitrogen donor to Co(II). For analogous pyridine–monoimine chemistry, this value falls in between the observed length for Co(III)–N Py distances (∼1.97 Å) and those for Co(II)–N Py complexes (2.08–2.21 Å). − Finally, the pseudotetrahedral environment about the metal atom is inconsistent with Co(III), which prefers octahedral ligation. A recent report from Lippard et al provides useful benchmarks for tetrahedral Co(III) in an amide/imine ligation environment.…”

Section: Resultsmentioning

confidence: 70%

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Synthesis and Structure of 2,5-Bis[N-(2,6-mesityl)iminomethyl]pyrrolylcobalt(II): Evidence for One-Electron-Oxidized, Redox Noninnocent Ligand Behavior

et al. 2017

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The title complex Co(Mespyr)Cl is prepared from CoCl and (Mespyr)H. Instead of the expected (Mespyr)CoCl complex, a complex with formula (Mespyr)CoCl is isolated wherein the angle strain of the Mespyr ligand results in metal ligation by only two of the three ligand donor atoms. Careful examination of structural, spectroscopic, and magnetic features indicates this compound is best described as a complex of high-spin Co(II) with a neutral radical ligand.

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 70%

Synthesis and Structure of 2,5-Bis[N-(2,6-mesityl)iminomethyl]pyrrolylcobalt(II): Evidence for One-Electron-Oxidized, Redox Noninnocent Ligand Behavior

et al. 2017

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“…(15) Å] bonds in the carboxylate group indicates a delocalized bonding arrangement, rather than localized single and double bonds. These values are in satisfactory agreement with those found in the literature [12][13][14][15]. As a result of the delocalization of the electron density Zn ion surrounding, O1-Zn1-N1, N1-Zn1-O5, C1-N1-Zn1, C7-O1-Zn1 angles are 92.79(6)°, 92.65(6)°, 121.28(12)°, 128.57(13)°, respectively.…”

Section: Introductionsupporting

confidence: 91%

Synthesis, X-ray structural characterization, NLO, MEP, NBO and HOMO-LUMO analysis using DFT study of Zn(II)bis(3,4 dimethoxybenzoate)bis(nicotinamide) dihydrate

Kaya

Demi̇rci̇oğlu

Kaya

et al. 2014

Heterocyclic Communications

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Synthesis, X-ray structural characterization, NLO, MEP, NBO and HOMO-LUMO analysis using DFT study of Zn(II)bis(3,4 dimethoxybenzoate) bis(nicotinamide) dihydrateAbstract: A single crystal of Zn(II)bis(3,4 dimethoxybenzoate)bis(nicotinamide) dihydrate, formulated as C 30 H 38 N 4 O 14 Zn, (I) has been obtained. According to experimental data, the complex can be characterized in the solid state as mononuclear, with a distorted octahedral stereochemistry. The distorted octahedral stereochemistry adopted by the complex was further confirmed by X-ray structure analysis of the current study, which consists of a six-coordinate Zn atom in a distorted octahedral environment constructed from two N atoms and four O atoms. The title compound crystallizes in the monoclinic space group C 2/c with a = 27.9248(18) Å, b = 8.5941(4) Å, c = 14.8344(11) Å, α = 90°, β = 108.651(5)°, γ = 90°, Z = 4. The molecular structure and geometry were also optimized using the B3LYP density functional theory method employing the 6-31G (d) basis set. Molecular electrostatic potential, frontier molecular orbital analysis, nonlinear optical properties and natural bond analysis for the title molecule are also described from the computational process.

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“…The amount of NH 2 IPA ligated to per Zr 6 node gradually increases with the NH 2 IPA concentration, and reaches a value of 1.32 at 300 mmol/L. Interestingly, the number of charge-balanced −OH groups connected to per Zr 6 node diminishes following NH 2 IPA integration, implying their involvement in the PSM reactions. − The thermogravimetry analysis sheds further light on the PSM process (Figures d and S4). The weight loss linked to coordinated NH 2 IPA decomposition (425–500 °C) increases from G808 to G808-NH 2 , while weight loss corresponding to dehydroxylation of the Z 6 clusters (315–410 °C) decreases concomitantly, , suggesting that the Zr–OH/Zr–OH 2 groups may be the main sites for NH 2 IPA substitution.…”

Section: Resultsmentioning

confidence: 89%

Enhanced Adsorption and Mass Transfer of Hierarchically Porous Zr-MOF Nanoarchitectures toward Toxic Chemical Removal

Wang¹,

Su²,

Zhao³

et al. 2021

ACS Appl. Mater. Interfaces

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Zirconium-based metal−organic frameworks (Zr-MOFs) have shown tremendous prospects as highly efficient adsorbents against toxic chemicals under ambient conditions. Here, we report for the f irst time the enhanced toxic chemical adsorption and mass transfer properties of hierarchically porous Zr-MOF nanoarchitectures. A general and scalable sol−gel-based strategy combined with facile ambient pressure drying (APD) was utilized to construct MOF-808, MOF-808-NH 2 , and UiO-66-NH 2 xerogel monoliths, denoted as G808, G808-NH 2 , and G66-NH 2 , respectively. The resulting Zr-MOF xerogels demonstrated 3D porous networks assembled by nanocrystal aggregates, with substantially higher mesoporosities than the precipitate analogues. Microbreakthrough tests on powders and tube breakthrough experiments on engineered granules were conducted at different relative humidities to comprehensively evaluate the NO 2 adsorption capabilities. The Zr-MOF xerogels showed considerably better NO 2 removal abilities than the precipitates, whether intrinsically or under simulated respirator canister/protection filter environment conditions. Multiple physicochemical characterizations were conducted to illuminate the NO 2 filtration mechanisms. Analysis on adsorption kinetics and mass transfer patterns in Zr-MOF xerogels was further performed to visualize the underlying structure−activity relationship using the gravimetric uptake and zero length column methods with cyclohexane and acetaldehyde as probes. The results revealed that the synergy of hierarchical porosities and nanosized crystals could effectively expedite the intracrystalline diffusion for the G66-NH 2 xerogel as well as alleviate the surface resistance for the G808-NH 2 xerogel, which led to accelerated overall adsorption uptake and thus enhanced performance toward toxic chemical removal.

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Different dimensionality in Mn(II), Co(II) and Ni(II) aminoisophthalate metal–organic compounds: Synthesis, characterization and gas adsorption properties

Cited by 11 publications

References 38 publications

Synthesis and Structure of 2,5-Bis[N-(2,6-mesityl)iminomethyl]pyrrolylcobalt(II): Evidence for One-Electron-Oxidized, Redox Noninnocent Ligand Behavior

Synthesis and Structure of 2,5-Bis[N-(2,6-mesityl)iminomethyl]pyrrolylcobalt(II): Evidence for One-Electron-Oxidized, Redox Noninnocent Ligand Behavior

Synthesis, X-ray structural characterization, NLO, MEP, NBO and HOMO-LUMO analysis using DFT study of Zn(II)bis(3,4 dimethoxybenzoate)bis(nicotinamide) dihydrate

Enhanced Adsorption and Mass Transfer of Hierarchically Porous Zr-MOF Nanoarchitectures toward Toxic Chemical Removal

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