Trinuclear Gold(I) Pyrazolate Complexes Exhibiting Hexagonal Columnar Mesophases with only Three Side Chains

Sung Jee Kim, Seok Ho Kang, Ki Min Park, Heesub Kim, Wang Cheol Zin, Moon Gun Choi, Kimoon Kim

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Abstract

Reaction of long-chain alkyl-substituted pyrazoles with AuCl(SMe2) yields trinuclear gold-(I) pyrazolate complexes, two of which exhibit monotropic mesophases. Optical microscopy and/or X-ray diffraction studies show that these compounds form hexagonal columnar mesophases. They are only the third examples of discotic mesogens possessing only three aliphatic side chains. The X-ray crystal structure of one compound reveals that two molecules form a "dimer" mainly through intermolecular Au-Au interactions. The "dimers" are stacked in a tilted fashion to form columns along the b axis in the crystal phase, which are presumably rearranged to the hexagonal columnar structure in the mesophase.

Original languageEnglish
Pages (from-to)1889-1893
Number of pages5
JournalChemistry of Materials
Volume10
Issue number7
Publication statusPublished - 1998 Dec 1

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All Science Journal Classification (ASJC) codes

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

Cite this

Kim, S. J., Kang, S. H., Park, K. M., Kim, H., Zin, W. C., Choi, M. G., & Kim, K. (1998). Trinuclear Gold(I) Pyrazolate Complexes Exhibiting Hexagonal Columnar Mesophases with only Three Side Chains. Chemistry of Materials, 10(7), 1889-1893.