Interlayer Spacing of k-(BEDT-TTF)2Cu(NCS)2

Yousuke Watanabe, Takahiko Sasaki, Hideki Sato, Naoki Toyota

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


From low-temperature X-ray diffraction measurements, the interlayer spacing d100 of the layered organic superconductor k-{BEDT-TTF)2Cu(NCS)2 is revealed to take a maximum around 100K. Since d100=a-sinβ (a is the monoclinic lattice parameter and P the angle between the a- and c-axes), this anomalous maximum is due to the combined effect of the monotonous increasing a and decreasing sinβ (β>90°) with decreasing temperatures. This result can be attributed to the structural changes in the hydrogen bonding between the terminal ethylene CH2 and the counter anion molecule -SCN-Cu-NCS-.

Original languageEnglish
Pages (from-to)2118-2121
Number of pages4
JournalJournal of the Physical Society of Japan
Issue number7
Publication statusPublished - 1991 Jan


  • hydrogen bonding
  • k-{BEDT-TTF)2Cu(NCS)2
  • lattice parameter
  • low-temperature X-ray diffraction
  • organic superconductor


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