Orthogonal Grade-Separated Nanowiring of Molecular Single Chains

Hirotaka Nakajima, Hiroaki Iguchi, Shinya Takaishi, Tetsu Sato, Brian K. Breedlove, Ryuta Ishikawa, Satoshi Kawata, Qingyun Wan, Masanori Wakizaka, Masahiro Yamashita

Research output: Contribution to journalArticlepeer-review


Quasi-one-dimensional (1D) compounds are suitable models to develop future nanodevices. The critical issue is that most of the several hundred reported 1D compounds adopt parallel arrangements. Here, we report the first example of an orthogonal grade-separated arrangement of the halogen-bridged metal complex (MX-Chain) [PtII(en)2][PtIVCl2(en)2][FeIIICl5]2, abbreviated as [Pt(en)2Cl][FeIIICl5] (en = ethylenediamine), which is the first example of that arrangement of molecular single chains. The space group and topology are coincidentally same as alchemists’ gold, Hg3−δAsF6, which aligns as atomic single chains. This molecular nanostructure is very rare and valuable as a three-dimensional (3D) nanowiring model. The hydrogen bond network found in [Pt(en)2Cl][FeIIICl5] represents a new strategy for making such nanostructures. The structural and optical relationships are similar to those of typical Pt(II)/Pt(IV) mixed valent MX-Chains in charge-density-wave (CDW) states. Polarized Raman spectra strongly supported the presence of orthogonal grade-separated chains in CDW states. Thus, this work proved the concept of molecular single-chain grade-separated nanowiring.

Original languageEnglish
Pages (from-to)116-122
Number of pages7
JournalChemistry of Materials
Issue number1
Publication statusPublished - 2023 Jan 10

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry


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