Liquid‐crystalline Compounds, 86. The First Disc‐Shaped Dinuclear Platinum Mesogen


Praefcke K., Bilgin B. , Pickardt J., Borowski M.

CHEMISCHE BERICHTE, vol.127, no.8, pp.1543-1545, 1994 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 127 Issue: 8
  • Publication Date: 1994
  • Doi Number: 10.1002/cber.19941270832
  • Journal Name: CHEMISCHE BERICHTE
  • Journal Indexes: Science Citation Index Expanded
  • Page Numbers: pp.1543-1545
  • Keywords: CYCLOPLATINATION, LIQUID CRYSTALS, MESOPHASES, MESOPHASE INDUCTION, METALLOMESOGENS, LIQUID-CRYSTALS, PHASE, METALLOMESOGENS, DERIVATIVES, MESOPHASES, COMPLEXES, SYSTEMS

Abstract

The cycloplatination of the tetrasubstituted imine 1 leads to the diplatinum organyl 3 as the main reaction product, which represents the first example of a new class of metallomesogens exhibiting monotropically a nematic-discotic phase. An X-ray crystal structure of this anti-isomer 3 has been performed. Furthermore, this platinomesogen also shows the induction of a hexagonal columnar mesophase (D ho ) on doping with 2,4,7-trinitrofluorenone as an electron acceptor. Compared to the analogous palladomesogen the two mesophases observed are more stable in the case of the platinum liquid crystal