Solvent/Anion-Induced Structural Modification in a Discrete {Co14} Clusters

We present here a nested [Co4 ⊂Co10] cluster consist of an inner [Co4(μ3-OH)4] cubane and a [Co10(dpbt)6Cl12] adamantane periphery, formulated as [Co14(μ3-OH)4(dpbt)6Cl12]·14CH3CH2OH (1) (here, H2dpbt ligand= 5,5′-di­(pyridin-2 -yl)-3,3′-bi­(1,2,4-triazole)). After suitable modifications in the aspe...

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Bibliographic Details
Published in:Crystal growth & design 2020-02, Vol.20 (2), p.964-972
Main Authors: Yao, Peng-Fei, Li, Hai-Ye, Bian, He-Dong, Liang, Hong, Huang, Fu-Ping
Format: Article
Language:English
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Summary:We present here a nested [Co4 ⊂Co10] cluster consist of an inner [Co4(μ3-OH)4] cubane and a [Co10(dpbt)6Cl12] adamantane periphery, formulated as [Co14(μ3-OH)4(dpbt)6Cl12]·14CH3CH2OH (1) (here, H2dpbt ligand= 5,5′-di­(pyridin-2 -yl)-3,3′-bi­(1,2,4-triazole)). After suitable modifications in the aspects of solvent and substitutional anion reaction conditions, three crystalline {Co14} clusters with the same skeleton of 1, formulated as [Co14(μ3-OH)4(dpbt)6Cl12]·11CH3CN (2), [Co14(μ3-OH)4(dpbt)6Cl12]·6CH3CH2COCH3 (3), and [Co14(μ3-OH)4(dpbt)6 Cl12] ·4CH3COCH3 (4), and a bromo-derivative {Co14} cluster, [Co14(μ3-OH)4 (dpbt)6Br12]·4CH3CH2OH (5), consist of an [Co10(dpbt)6Br12] adamantane periphery, respectively. The procedure of the structural modification from 1 to 4, can be intuitionally tracked by scanning electron microscope (SEM). Besides, all the compounds 1–5 exhibit spin-glass-like relaxation between 3 and 12 K, as well as canted antiferromagnetic behavior with the canting angles of 1.27, 0.32, 1.89, 0.20, and 0.24°, respectively.
ISSN:1528-7483
1528-7505
DOI:10.1021/acs.cgd.9b01320