A new heteroleptic oxalate-based compound: poly[[2-(aminomethyl)pyridine]di-μ6-oxalato-chromium(III)potassium(I)]

Tsobnang, Patrice Kenfack; Wenger, Emmanuel; Ponou, Siméon; Dahaoui, Slimane; Ngolui, John Lambi; Lecomte, Claude

doi:10.1107/s205322961303088x

Cited by 3 publications

(1 citation statement)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the flexibility of the resulting architecture could be very efficient for water vapor sorption selectivity since pores could be opened only under precise conditions, which could be related to the nature and the concentration of a particular gas. The (oxalato)metalate ions {M[(C 2 O 4 ) n ] n − M = Cr 3+ , Fe 3+ , Al 3+ , Zr 4+ , U 4+ , n = 3, 2} and their derivatives − occupy a great place among the units used to build these materials. For instance, Sutter and co-workers have developed many hydride open architectures by linking these anionic complexes to appropriate organic cations through charge-assisted hydrogen bonds .…”

Section: Introductionmentioning

confidence: 99%

Water Vapor Single-Gas Selectivity via Flexibility of Three Potential Materials for Autonomous Indoor Humidity Control

Tsobnang

Hastürk

Fröhlich

et al. 2019

Crystal Growth & Design

Self Cite

View full text Add to dashboard Cite

Two new isostructural porous supramolecular materials {[Cu 2 (amp) 4 Cl][M(C 2 O 4 ) 3 ]•6H 2 O} n (amp = 2-aminomethylpyridine), designated as II and III for M = Cr(III) and M = Fe(III) respectively, have been synthesized by a self-assembly process of two ionic complexes [Cu 2 (amp) 4 Cl] 3+ and [M(C 2 O 4 ) 3 ] 3− , M = Fe(III) and Cr(III). They build heterometallic hydrogenbonded-, oxalato-and chlorido-bridged zigzag chains with interchain hydrogen bonds and π−π interactions. This results in supramolecular potentially porous architectures exhibiting large channels filled with hexameric water clusters. Their activated phases, II′ and III′, can readsorb the water molecules to regenerate the initial materials which are stable for many water adsorption and desorption cycles like that of their homologous catena-{ [(Co(amp) 3 ][Cr(C 2 O 4 ) 3 ]•6H 2 O} (I′). The three materials I′, II′, and III′ exhibit water adsorption and desorption isotherms having a sigmoidal shape and resulting in the combination of a type I(b) profile followed by an S-shaped type V isotherm with hysteresis. At 20 °C, the steep water sorption of the S-shaped isotherm occurs at 0.1P/P 0 for II′ and III′. This water sorption behavior is quite different from the related compound I′, where a gate opening and closure process is involved, giving a type V isotherm with a pronounced H1-type hysteresis loop with parallel and steep adsorption (at 0.25P/P 0 ) and desorption branches (at 0.17P/P 0 ). The water adsorption capacities of the three materials I′, II′, and III′ are 17, 12, and 11 wt %, respectively. Temperature does not have a great effect on their water sorption properties, and they all exclude N 2 and CO 2 gases in the low pressure range. Compounds II′ and III′ are classified among the materials for which the dehumidification and the humidification trigger points are the same or too close (10% relative humidity (r.H.) in their case), while I′ shows a good potential to be used for automatic indoor control in the range of 15−25% r.H. recommended for many activities. All the differences observed in the water sorption properties of the three materials are related to (i) the type of water cluster which is built in each material, (ii) the strength of the hydrogen bonds within each water cluster and between the clusters and its host, and (iii) the strength of the intrahost interactions which keep the pores of the material closed.

show abstract

Section: Introductionmentioning

confidence: 99%

Water Vapor Single-Gas Selectivity via Flexibility of Three Potential Materials for Autonomous Indoor Humidity Control

Tsobnang

Hastürk

Fröhlich

et al. 2019

Crystal Growth & Design

Self Cite

View full text Add to dashboard Cite

show abstract

Synthesis, characterization, and antimicrobial properties of two new Bis(oxalato)metalate(III) hybrid salts with 2,2’-bipyridinium cation

Momha,

Heinen,

Tsobnang

et al. 2025

Journal of Molecular Structure

View full text Add to dashboard Cite

Synthesis, Characterization and Thermal Analysis of an Organic-Inorganic Hybrid Salt Involving Trans-Diaquabis(oxalato-κ2O1,O2)chromate(III) Complex Anion with Piperidinium as Counter Cation

Ndong¹,

Signé²,

Kenfack³

et al. 2020

CSTA

Self Cite

View full text Add to dashboard Cite

A new organic-inorganic hybrid salt pipéridinium trans-diaquabis(oxalato)chromate(III) tetrahydrate, (C 5 H 10 NH 2 )[Cr(C 2 O 4 ) 2 (H 2 O) 2 ]•4H 2 O (1), has been synthesized in water and characterized by FTIR and UV-Vis spectroscopies, elemental and thermal analyses and by single-crystal X-ray diffraction. 1 crystallizes in the orthorhombic non-centrosymmetric space group Cmc2 1 with the unit cell parameters a = 7.4329(3), b = 9.9356(5), c = 23.6756(11) Å, α = β = γ = 90˚, V = 1748.45(14) Å 3 and Z = 4. The structure of 1 consists of [Cr(C 2 O 4 ) 2 (H 2 O) 2 ] − mononuclear anions, piperidinium cations and uncoordinated water molecules. The Cr III ion in the complex [Cr(C 2 O 4 ) 2 (H 2 O) 2 ] − is coordinated in a slightly distorted octahedral environment by four O atoms from two chelating oxalate dianions in the equatorial plane, and two O atoms from trans-coordinated water molecules occupying the apical positions. In the crystal, N-H⋯O and O-H⋯O hydrogen bond interactions connect the components into a 3-D framework. The IR spectrum of 1 is consistent with the presence of the various molecular building constituents, namely oxalato and aqua ligands, piperidinium cations and solvent water molecules. The UV-Vis spectrum shows two absorption bands around 564 and 416 nm which are

show abstract

A new heteroleptic oxalate-based compound: poly[[2-(aminomethyl)pyridine]di-μ₆-oxalato-chromium(III)potassium(I)]

Cited by 3 publications

References 29 publications

Water Vapor Single-Gas Selectivity via Flexibility of Three Potential Materials for Autonomous Indoor Humidity Control

Water Vapor Single-Gas Selectivity via Flexibility of Three Potential Materials for Autonomous Indoor Humidity Control

Synthesis, characterization, and antimicrobial properties of two new Bis(oxalato)metalate(III) hybrid salts with 2,2’-bipyridinium cation

Synthesis, Characterization and Thermal Analysis of an Organic-Inorganic Hybrid Salt Involving <i>Trans</i>-Diaquabis(oxalato-κ<sup>2</sup><i>O</i><sup>1</sup>,<i>O</i><sup>2</sup>)chromate(III) Complex Anion with Piperidinium as Counter Cation

Contact Info

Product

Resources

About