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Issue 67, 2017
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Slow magnetic relaxation in five-coordinate spin-crossover cobalt(II) complexes

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Abstract

We present the first examples of the coexistence of field induced slow magnetic relaxation and spin-crossover observed in five-coordinate cobalt(II) complexes [Co(12-TMC)(CH3CN)](X)2 (12-TMC = 1,4,7,10-tetramethyl-1,4,7,10-tetraazacyclododecane, X = BF4, 1; PF6, 2). The direct-current (dc) magnetic data show a gradual and incomplete spin-crossover at high temperature. 1 and 2 display frequency- and temperature-dependent alternating-current (ac) magnetic susceptibility under an applied dc field of 2500 Oe, which originates from the S = 1/2 spin state of Co(II) ions.

Graphical abstract: Slow magnetic relaxation in five-coordinate spin-crossover cobalt(ii) complexes

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Publication details

The article was received on 20 Jun 2017, accepted on 17 Jul 2017 and first published on 17 Jul 2017


Article type: Communication
DOI: 10.1039/C7CC04785A
Citation: Chem. Commun., 2017,53, 9304-9307
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    Slow magnetic relaxation in five-coordinate spin-crossover cobalt(II) complexes

    H. Cui, J. Wang, X. Chen and Z. Xue, Chem. Commun., 2017, 53, 9304
    DOI: 10.1039/C7CC04785A

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