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Synthesis and coordination to the coinage metals of a trimethylpyrazolyl substituted 3-arylacetylacetone

Steven van Terwingen,N. Nachtigall,U. Englert

Published 2021 in Zeitschrift für Kristallographie - Crystalline Materials

ABSTRACT

Abstract The ligand 3-(4-(1,3,5-trimethyl-1H-pyrazol-4-yl)phenyl)acetylacetone (1) combines a Pearson hard O,O′ chelating acetylacetone donor with a softer pyrazole N donor bridged by a phenylene spacer. Deprotonation and coordination to CuII leads to a square planar bis-acetylacetonato complex; interpreting the close proximity of an adjacent complex’s pyrazole moiety as an η 2 ${{\eta}}^{2}$ coordination to the axial CuII position leads to a two dimensional extended structure. The N donor capabilities are proven by coordination to AgPF6 and AuCl; for AgI a cationic linear bis-pyrazole complex as a toluene solvate is obtained with toluene-pyrazole π-interactions and an essentially uncoordinated PF 6 - ${{\mathrm{PF}}_{6}}^{-}$ anion. In the case of AuCl a neutral linear coordination compound with one chlorido and one pyrazole ligand 1 is obtained. Comparing the dihedral angles with a closely related but shorter ligand reveals a larger rotational degree of freedom in 1, allowing for richer architectures in emerging coordination polymers.

PUBLICATION RECORD

  • Publication year

    2021

  • Venue

    Zeitschrift für Kristallographie - Crystalline Materials

  • Publication date

    2021-11-29

  • Fields of study

    Not labeled

  • Identifiers
    DOI 10.1515/zkri-2021-2059
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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