Synthesis and phase behaviour of mesomorphic transition-metal complexes of alcoxydithiobenzoates

  1. Adams, H. 3
  2. Albeniz, A.C. 1
  3. Bailey, N.A. 3
  4. Bruce, D.W. 3
  5. Cherodian, A.S. 4
  6. Dhillon, R. 3
  7. Dunmur, D.A. 3
  8. Espinet, P. 1
  9. Feijoo, J.L. 24
  10. Lalinde, E. 3
  11. Maitlis, P.M. 3
  12. Richardson, R.M. 4
  13. Ungar, G. 4
  1. 1 Universidad de Valladolid
    info

    Universidad de Valladolid

    Valladolid, España

    ROR https://ror.org/01fvbaw18

  2. 2 Universidad Simón Bolívar
    info

    Universidad Simón Bolívar

    Caracas, Venezuela

    ROR https://ror.org/01ak5cj98

  3. 3 University of Sheffield
    info

    University of Sheffield

    Sheffield, Reino Unido

    ROR https://ror.org/05krs5044

  4. 4 University of Bristol
    info

    University of Bristol

    Brístol, Reino Unido

    ROR https://ror.org/0524sp257

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Journal:
Journal of Materials Chemistry Print

ISSN: 0959-9428

Year of publication: 1991

Volume: 1

Issue: 5

Pages: 843-855

Type: Article

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Abstract

Reaction of 4-alkoxydithiobenzoates (n-odtb, where n refers to the number of carbon atoms in the alkoxy chain) with divalent salts of nickel, palladium and zinc leads to complexes of the formula [M(n-odtb)2] where M = Ni, Pd and [Zn2(n-odtb)4] which are mesomorphic. The shortest-chain homologues of the Ni and Pd complexes show a nematic phase while at longer chain lengths, an Sc phase is observed. Most homologues of the zinc complexes show a nematic phase with an Sc phase appearing only for the longest homologues. The gold(III) complexes [AuX 2(n-odtb)] are also mesomorphic and show the SA phase. Single-crystal X-ray structure determinations have been carried out for [Pd(8-odtb)2], [Zn2(4-odtb)4] and [Zn 2(8-odtb)4], showing the first to be planar and the last two dinuclear with pseudo five-co-ordinate zinc atoms.