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Spin-Crossover and Slow Magnetic Relaxation Behavior in Hexachlororhenate(IV) Salts of Mn(III) Complexes [Mn(5-Hal-sal2323)]2[ReCl6] (Hal = Cl, Br).

ABSTRACT: The cationic complexes of Mn(III) with the 5-Hal-sal2323 (Hal = Cl, Br) ligands and a paramagnetic doubly charged counterion [ReCl6]2- have been synthesized: [Mn(5-Cl-sal2323)]2[ReCl6] (1) and [Mn(5-Br-sal2323)]2[ReCl6] (2). Their crystal structures and magnetic properties have been studied. These isostructural two-component ionic compounds show a thermally induced spin transition at high temperature associated with the cationic subsystem and a field-induced slow magnetic relaxation of magnetization at cryogenic temperature, associated with the anionic subsystem. The compounds are the first examples of the coexistence of spin crossover and field-induced slow magnetic relaxation in the family of known [MnIII(sal2323)] cationic complexes with various counterions.

SUBMITTER: Tiunova AV 

PROVIDER: S-EPMC9570138 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature

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Spin-Crossover and Slow Magnetic Relaxation Behavior in Hexachlororhenate(IV) Salts of Mn(III) Complexes [Mn(5-Hal-sal<sub>2</sub>323)]<sub>2</sub>[ReCl<sub>6</sub>] (Hal = Cl, Br).

Tiunova Aleksandra V AV   Kazakova Anna V AV   Korchagin Denis V DV   Shilov Gennady V GV   Aldoshin Sergey M SM   Dmitriev Aleksei I AI   Zhidkov Mikhail V MV   Zakharov Konstantin V KV   Yagubskii Eduard B EB  

International journal of molecular sciences 20220928 19

The cationic complexes of Mn(III) with the 5-Hal-sal<sub>2</sub>323 (Hal = Cl, Br) ligands and a paramagnetic doubly charged counterion [ReCl<sub>6</sub>]<sup>2-</sup> have been synthesized: [Mn(5-Cl-sal<sub>2</sub>323)]<sub>2</sub>[ReCl<sub>6</sub>] (<b>1</b>) and [Mn(5-Br-sal<sub>2</sub>323)]<sub>2</sub>[ReCl<sub>6</sub>] (<b>2</b>). Their crystal structures and magnetic properties have been studied. These isostructural two-component ionic compounds show a thermally induced spin transition at  ...[more]

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