Crystal Structure and Magnetic Properties of a Hexanuclear Copper(II) Carboxylate

Adner, David; Korb, Marcus; Lochenie, Charles; Weber, Birgit; Lang, Heinrich

doi:10.1002/zaac.201400519

Cited by 3 publications

(1 citation statement)

References 26 publications

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“…Prohibitive electrostatic repulsions between electron-rich O atoms of closely spaced carboxylate moieties are also implausible, as cyclic hexanuclear Cu(II) complexes are known with contiguous ciscarboxylates, such as phenoxyacetate, 34 3,4,5-tri(ethoxy)benzoate, 35 and 2-phenyl-3,6,9-trioxadecanoate. 36 Likewise, cyclic tetranuclear and higher nuclearity complexes with contiguous cis-carboxylates are also known. 18,23,25 Therefore, we tentatively suggest that the absence of highly substituted nanojars (x > 10) is attributable to the diminishing of the stabilizing π−π interactions offered by pyrazolate ligands. )…”

Section: ■ Discussionmentioning

confidence: 83%

Mapping the Intricate Reactivity of Nanojars toward Molecules of Varying Acidity and Their Conjugate Bases Leading To Exchange of Pyrazolate Ligands

Hartman

Mezei

2017

Inorg. Chem.

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A comprehensive reactivity study of nanojars toward 18 different acidic compounds with varying pK, including 12 different carboxylic acids (both aliphatic and aromatic mono- and dicarboxylic acids), p-toluenesulfonic acid, hydrogen sulfate, hydrogen carbonate, carbonic acid, 1-decanethiol, and methanol, as well as four different conjugate bases (formate, acetate, benzoate, 2-bromoethanesulfonate) is carried out with the aid of electrospray-ionization mass spectrometry. Thus, the effect on nanojar substitution and breakdown pattern of a number of variables, such as concentration of reagent (acid or conjugate base), acidity of reagent (pK), effect of acid vs conjugate base, steric effects, aromaticity, incarcerated anion and size of the nanojar, is evaluated. Of the substitution and breakdown products identified by mass spectrometry, acetate-substituted nanojars (BuN)[CO⊂{Cu(μ-OH)(μ-pz)(μ-CHCOO)}] (x = 1 and 2), as well as dimeric complexes (BuN)[Cu(μ-pz)A] (A = CO and SO) have been isolated and characterized by single-crystal X-ray diffraction. This study offers a detailed understanding of the behavior of nanojars of various sizes and with different incarcerated anions in the presence of the above-mentioned compounds at varying concentrations and tests the limits of the pyrazolate/carboxylate structural analogy in multinuclear metal complexes. The results point to the possibility of obtaining functionalized nanojars via pyrazolate/carboxylate ligand exchange, an aid in the design of anion extraction processes using nanojars or similar complexes as extracting agents.

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Section: ■ Discussionmentioning

confidence: 83%

Mapping the Intricate Reactivity of Nanojars toward Molecules of Varying Acidity and Their Conjugate Bases Leading To Exchange of Pyrazolate Ligands

Hartman

Mezei

2017

Inorg. Chem.

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Asperical silver nanoparticles by thermal decomposition of a single-source-precursor

Adner

Noll

Schulze

et al. 2016

Inorganica Chimica Acta

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Novel Cu(ii) complexes withNNO-Schiff base-like ligands – structures and magnetic properties

Dankhoff

Weber

2018

CrystEngComm

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Crystal Structure and Magnetic Properties of a Hexanuclear Copper(II) Carboxylate

Abstract: (1) is described. Single-crystal X-ray structure analysis reveals that the copper(II) ions are arranged in a six-membered ring which adopts a chair-like conformation. The copper(II) ions are bridged by μ 2 -and μ 3 -

Cited by 3 publications

References 26 publications

Mapping the Intricate Reactivity of Nanojars toward Molecules of Varying Acidity and Their Conjugate Bases Leading To Exchange of Pyrazolate Ligands

Mapping the Intricate Reactivity of Nanojars toward Molecules of Varying Acidity and Their Conjugate Bases Leading To Exchange of Pyrazolate Ligands

Asperical silver nanoparticles by thermal decomposition of a single-source-precursor

Novel Cu(ii) complexes withNNO-Schiff base-like ligands – structures and magnetic properties

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