Bowl-shaped molybdenum complexes containing tris(3-p-methoxyphenylpyrazol-1-yl)borate (TpAn). Crystal structures of [Mo(TpAn)(NO)(Cl)(NHC6H4-p-CH3)] and [Mo(TpAn)(NO)(Cl){NHC6H4-p-N(CH 3)2}]

José A. Campo, Mercedes Cano*, José V. Heras, M. Cristina Lagunas, Elena Pinilla, M. Rosario Torres

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

New arylamide complexes of the type [Mo(TpAn)(NO)(Cl)(NHC6H4-p-R)] (TpAn = hydrotris(3-p-methoxyphenylpyrazol-1-yl)borate; R = CH3O (1), N(CH3)2 (2), Cl (3), CH3 (4)) have been prepared in order to deduce the influence different arylamide para-substituents have on their molecular structure and properties. The single-crystal X-ray structures of [Mo(TpAn)(NO)(Cl){NHC6H4-p-N(CH 3)2}] (2) and [Mo(TpAn)(NO)(Cl)(NHC6H4-p-CH3)] (4) have been solved, both of them having a characteristic bowl-like molecular shape. The influence of electronic and steric factors on the shape of the bowl cavity is discussed. Both compounds have a columnar packing arrangement with molecular interpenetrating between neighbouring columns. Given that columnar stacking could be appropriate for liquid crystal materials, new related complexes bearing long-chain substituted arylamide ligands [Mo(TpAn)(NO)(Cl)(NHC6H4-p-CnH 2n+1)] (n = 6, 10, 12, 14, 16; 5-9) have been prepared.

Original languageEnglish
Pages (from-to)2997-3005
Number of pages9
JournalPolyhedron
Volume20
Issue number24-25
DOIs
Publication statusPublished - 15 Nov 2001
Externally publishedYes

Keywords

  • Arylamide ligands
  • Bowl-shaped molecules
  • Molybdenum
  • Trispyrazolylborate

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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