Materials Research Letters (Jul 2022)

Telltale diamagnetism at 50 K of a coordination polymer system

  • Jun He,
  • Xinhe Ye,
  • Zhiqing Liu,
  • Liangming Tang,
  • Jieying Hu,
  • Zhengtao Xu

DOI
https://doi.org/10.1080/21663831.2022.2057822
Journal volume & issue
Vol. 10, no. 7
pp. 496 – 500

Abstract

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The synthesis of coordination polymers (e.g. Prussian blue) is as old as modern chemistry itself, but never stops surprising people. We here report superconductivity observed of a designer coordination polymer system sporting the chemically soft mercaptan and hard carboxyl groups. The mercapto-carboxyl (dubbed Mercarb, or QiuSuo in Mandarin Pinyin) synergy hints at Daoism and here carries over from the molecular to the solid state: the soft sulfur donors bond with Co2+/Ni2+ (or other transition metal ions) to afford 2D sheets for charge transport, while the interlayer metal-carboxylate domain is more ionic and mediates the transition into the superconductive state.

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