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Air-stable diradical dications with ferromagnetic interaction exceeding the thermal energy at room temperature: from a monomer to a dimer

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Abstract

Two tetraazacyclophane dications (12+ and 22+) with different remote substituents have been synthesized, isolated and characterized. Their electronic structures and physical property were studied by various spectroscopic techniques, single crystal X-ray diffraction, super conducting quantum interference device (SQUID) measurements and theoretical calculations. The dications have triplet ground states with ferromagnetic interaction exceeding the thermal energy at room temperature. The solid-state structures of these species were tunable by substituent effect, with 12+ as a monomer and 22+ as a dimer.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (21525102, 21690062), and the Natural Science Foundation of Jiangsu Province (BK20140014). We are grateful to the High Performance Computing Center of Nanjing University for doing the numerical calculations in this paper on its IBM Blade cluster system.

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Authors and Affiliations

  1. State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China

    Wenqing Wang, Lei Wang, Sheng Chen, Wenbang Yang & Xinping Wang

  2. School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai’an, 223300, China

    Zaichao Zhang

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  1. Wenqing Wang
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  2. Lei Wang
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  3. Sheng Chen
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  4. Wenbang Yang
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  5. Zaichao Zhang
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  6. Xinping Wang
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Correspondence to Xinping Wang.

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11426_2017_9101_MOESM1_ESM.doc

Air-Stable Diradical Dications with Ferromagnetic Interaction Exceeding the Thermal Energy at Room Temperature: From a Monomer to a Dimer

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Wang, W., Wang, L., Chen, S. et al. Air-stable diradical dications with ferromagnetic interaction exceeding the thermal energy at room temperature: from a monomer to a dimer. Sci. China Chem. 61, 300–305 (2018). https://doi.org/10.1007/s11426-017-9101-5

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  • DOI: https://doi.org/10.1007/s11426-017-9101-5

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