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A new pnictidehalide with van der Waals host–guest interactions exhibiting both geometric spin frustration and resistive humidity sensitivity

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Abstract

A new metal pnictidehalide (Hg6P4)(CrCl6)Cl has been prepared by solid-state reaction. Its structure features a 3-D perovskite-like Image ID:c7nj03351f-t1.gif host octahedral network and discrete octahedral (CrCl6)3− and Cl guest ions assembled by weak van der Waals interactions. The nearest neighboring Cr3+ ions are antiferromagnetically coupled with each other, and the complex can be regarded as a geometric spin frustrated system. Electronic structure, optical dielectric constants and magnetic coupling parameters were calculated using the LDA+U method. The complex exhibits good resistive humidity sensitivity with humidity response as big as four orders of magnitude, quick resistance response, fast recovery, and good reproducibility. The complex provides a new way to realize multifunctional properties driven by weak van der Waals interactions.

Graphical abstract: A new pnictidehalide with van der Waals host–guest interactions exhibiting both geometric spin frustration and resistive humidity sensitivity

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Publication details

The article was received on 04 Sep 2017, accepted on 07 Dec 2017 and first published on 15 Dec 2017


Article type: Paper
DOI: 10.1039/C7NJ03351F
Citation: New J. Chem., 2018, Advance Article
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    A new pnictidehalide with van der Waals host–guest interactions exhibiting both geometric spin frustration and resistive humidity sensitivity

    S. Peng, L. Yang, M. Yao and L. Yu, New J. Chem., 2018, Advance Article , DOI: 10.1039/C7NJ03351F

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