A MnIII2NiII single-chain magnet separated by a thick isolating network of BPh4- anions

Hitoshi Miyasaka; Ayumi Saitoh; Masahiro Yamashita; Rodolphe Clérac

doi:10.1039/b718036e

A Mn^III₂Ni^II single-chain magnet separated by a thick isolating network of BPh₄^- anions

Hitoshi Miyasaka, Ayumi Saitoh, Masahiro Yamashita, Rodolphe Clérac

IMR - Materials Development Division

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50 Citations (Scopus)

Abstract

The assembly reaction of a Mn(iii) salen-type dimeric complex, [Mn ^III₂(saltmen)₂(H₂O) ₂](ClO₄)₂ (saltmen^2- = N,N′-(1,1,2,2-tetramethylethylene)bis(salycylideneiminate)), and a Ni(ii) oximato complex, [Ni^II(pao)₂(phen)] (pao^- = pyridine-2-aldoximate; phen = 1,10-phenanthroline), in the presence of NaBPh₄ yielded a heterometallic chain of [Mn^III ₂(saltmen)₂Ni^II(pao)₂(phen)] (BPh₄)₂ (Mn₂Ni-BPh₄) having a [-Mn^III-ON-Ni^II-NO-Mn^III-(O_Ph) ₂-] repeating unit surrounded by a "zeolite-like" network of BPh₄^- anions. Thanks to such bulky ion-walls, each chain is not only structurally separated with a nearest inter-chain metal⋯metal distance of 14.4 Å (Mn⋯Ni) but also magnetically extremely well isolated. This magnetic isolation and the ferromagnetic interactions between S = 3 anisotropic units constituting the chain play key roles that induce single-chain magnet behavior in this system.

Original language	English
Pages (from-to)	2422-2427
Number of pages	6
Journal	Dalton Transactions
Issue number	18
DOIs	https://doi.org/10.1039/b718036e
Publication status	Published - 2008

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title = "A MnIII2NiII single-chain magnet separated by a thick isolating network of BPh4- anions",

abstract = "The assembly reaction of a Mn(iii) salen-type dimeric complex, [Mn III2(saltmen)2(H2O) 2](ClO4)2 (saltmen2- = N,N′-(1,1,2,2-tetramethylethylene)bis(salycylideneiminate)), and a Ni(ii) oximato complex, [NiII(pao)2(phen)] (pao- = pyridine-2-aldoximate; phen = 1,10-phenanthroline), in the presence of NaBPh4 yielded a heterometallic chain of [MnIII 2(saltmen)2NiII(pao)2(phen)] (BPh4)2 (Mn2Ni-BPh4) having a [-MnIII-ON-NiII-NO-MnIII-(OPh) 2-] repeating unit surrounded by a {"}zeolite-like{"} network of BPh4- anions. Thanks to such bulky ion-walls, each chain is not only structurally separated with a nearest inter-chain metal⋯metal distance of 14.4 {\AA} (Mn⋯Ni) but also magnetically extremely well isolated. This magnetic isolation and the ferromagnetic interactions between S = 3 anisotropic units constituting the chain play key roles that induce single-chain magnet behavior in this system.",

author = "Hitoshi Miyasaka and Ayumi Saitoh and Masahiro Yamashita and Rodolphe Cl{\'e}rac",

year = "2008",

doi = "10.1039/b718036e",

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T1 - A MnIII2NiII single-chain magnet separated by a thick isolating network of BPh4- anions

AU - Miyasaka, Hitoshi

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AU - Yamashita, Masahiro

AU - Clérac, Rodolphe

PY - 2008

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N2 - The assembly reaction of a Mn(iii) salen-type dimeric complex, [Mn III2(saltmen)2(H2O) 2](ClO4)2 (saltmen2- = N,N′-(1,1,2,2-tetramethylethylene)bis(salycylideneiminate)), and a Ni(ii) oximato complex, [NiII(pao)2(phen)] (pao- = pyridine-2-aldoximate; phen = 1,10-phenanthroline), in the presence of NaBPh4 yielded a heterometallic chain of [MnIII 2(saltmen)2NiII(pao)2(phen)] (BPh4)2 (Mn2Ni-BPh4) having a [-MnIII-ON-NiII-NO-MnIII-(OPh) 2-] repeating unit surrounded by a "zeolite-like" network of BPh4- anions. Thanks to such bulky ion-walls, each chain is not only structurally separated with a nearest inter-chain metal⋯metal distance of 14.4 Å (Mn⋯Ni) but also magnetically extremely well isolated. This magnetic isolation and the ferromagnetic interactions between S = 3 anisotropic units constituting the chain play key roles that induce single-chain magnet behavior in this system.

AB - The assembly reaction of a Mn(iii) salen-type dimeric complex, [Mn III2(saltmen)2(H2O) 2](ClO4)2 (saltmen2- = N,N′-(1,1,2,2-tetramethylethylene)bis(salycylideneiminate)), and a Ni(ii) oximato complex, [NiII(pao)2(phen)] (pao- = pyridine-2-aldoximate; phen = 1,10-phenanthroline), in the presence of NaBPh4 yielded a heterometallic chain of [MnIII 2(saltmen)2NiII(pao)2(phen)] (BPh4)2 (Mn2Ni-BPh4) having a [-MnIII-ON-NiII-NO-MnIII-(OPh) 2-] repeating unit surrounded by a "zeolite-like" network of BPh4- anions. Thanks to such bulky ion-walls, each chain is not only structurally separated with a nearest inter-chain metal⋯metal distance of 14.4 Å (Mn⋯Ni) but also magnetically extremely well isolated. This magnetic isolation and the ferromagnetic interactions between S = 3 anisotropic units constituting the chain play key roles that induce single-chain magnet behavior in this system.

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A Mn^III₂Ni^II single-chain magnet separated by a thick isolating network of BPh₄^- anions

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