An organometallic half-sandwich supramolecular complex {K(18-Crown-6)(ηn-C6H5B(C6H5)3)} (n = 1-6) exhibiting a reversible breaking-symmetry phase transition and switchable dielectric behaviour.

@article{Yuan2018AnOH,
  title={An organometallic half-sandwich supramolecular complex \{K(18-Crown-6)($\eta$n-C6H5B(C6H5)3)\} (n = 1-6) exhibiting a reversible breaking-symmetry phase transition and switchable dielectric behaviour.},
  author={Guo-Jun Yuan and Dong Shao and Zhi-Yuan Yao and Wenlong Liu and Xiao-Ming Ren},
  journal={Dalton transactions},
  year={2018},
  volume={47 47},
  pages={
          16835-16839
        }
}
A supramolecular crystal, built from a 1 : 1 molar ratio of potassium tetraphenylboron (KBPh4) with 1,4,7,10,13,16-hexaoxacyclooctadecane (18-Crown-6), contains an organometallic half-sandwich superstructure unit {K(18-Crown-6)(ηn-C6H5B(C6H5)3)} (1 with n = 1-6), and shows a reversible phase transition at ∼211 K. The analysis of crystal structures at 173 K in the low-temperature phase, and 293 and 423 K in the high-temperature phase revealed that the breaking-symmetry phase transition is… 
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A supramolecular crystal, [Na(15-crown-5)][BPh4] (1), (15-crown-5 = 1,4,7,10,13-pentaoxacyclopentadecane, NaBPh4 = sodium tetraphenylboron), has been obtained by mixing the ethanol solution of…
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