Three ion-pair complexes containing bis(maleonitriledithiolate)copper(II) anion and substituted 4-dimethylaminopyridinium: Syntheses, crystal structures, and magnetic properties

Ion-pair compounds of phenyl-substituted viologen dications with [M(mnt) 2 ] dianions were prepared and characterized. (Benzyl viologen)[M(mnt) 2 ] (M = Cu (1), Ni (2), Pt (3)) and (phenyl viologen)[Cu(mnt) 2 ] (4) exhibited mixed-stack crystal structures, whereas (dinitrophenyl viologen)[Cu(mnt) 2 ] (5) exhibited no π-π interactions. Magnetic susceptibility measurements revealed that 1 exhibits a ferromagnetic exchange interaction (Weiss constant θ = +0.9 K), possibly mediated by the diamagnetic cation. Antiferromagnetic interactions were observed for 4 (θ = −2.0 K) and 5 (θ = −2.9 K), whereas 2 and 3 were diamagnetic. Absorption bands assignable to charge transfer were observed in the mixed-stack salts in the visible to near-infrared region.

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Assembled structures and magnetic properties of viologen–[M(mnt)2] charge-transfer salts (mnt = maleonitriledithiolate; M = Cu, Ni, Pt)

Mochida

Funasako

Kishida

et al. 2012

Inorganica Chimica Acta

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Two new salts containing bis(maleonitriledithiolate)nickel(III)/copper(II) anion and substituted N,N′-dibenzylpiperidinium: Syntheses, crystal structures and magnetic properties

Liang

Yang

et al. 2012

Inorganica Chimica Acta

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Three ion–pair complexes containing bis(maleonitriledithiolate)copper(II) anion and substituted 2-aminopyridinium cations: Syntheses, crystal structures, and magnetic properties

Yin

et al. 2016

Journal of Molecular Structure

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Three ion-pair complexes containing bis(maleonitriledithiolate)copper(II) anion and substituted 4-dimethylaminopyridinium: Syntheses, crystal structures, and magnetic properties

Cited by 10 publications

References 28 publications

Assembled structures and magnetic properties of viologen–[M(mnt)2] charge-transfer salts (mnt = maleonitriledithiolate; M = Cu, Ni, Pt)

Assembled structures and magnetic properties of viologen–[M(mnt)2] charge-transfer salts (mnt = maleonitriledithiolate; M = Cu, Ni, Pt)

Two new salts containing bis(maleonitriledithiolate)nickel(III)/copper(II) anion and substituted N,N′-dibenzylpiperidinium: Syntheses, crystal structures and magnetic properties

Three ion–pair complexes containing bis(maleonitriledithiolate)copper(II) anion and substituted 2-aminopyridinium cations: Syntheses, crystal structures, and magnetic properties

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