Abstract
A novel tetranuclear silver coordination compound with the formula [Ag4(bdmpza)4]×10H2O (bdmpza = bis(3,5-dimethylpyrazol-1-yl)acetate) was synthesized by a reaction between an aqueous solution of silver nitrate and an aqueous solution prepared by bis(3,5-dimethylpyrazol-1-yl)acetic acid and potassium hydroxide (1:1 molar ratio). The obtained compound was characterized by elemental analysis, coupled thermogravimetric-mass spectrometry analysis, vibrational IR spectroscopy, and its crystal structure was determined by single-crystal X-ray diffraction method. Furthermore, the obtained crystal structure was additionally evaluated by Hirshfeld surface analysis.
Highlights
Due to the modelling of active sites of some zinc enzymes, and of active sites of the non-heme iron enzymes, which are required in oxygen activation, diverse tripodal heteroscorpionate N,N,O ligands have been prepared in last decades
To the aqueous solution of silver nitrate, AgNO3, (0.10 mmol, i.e. 1.0 mL of 0.10 M solution) 1.0 mL of the aqueous solution prepared of bis(3,5-dimethylpyrazol-1-yl)acetic acid (0.040 mmol) and potassium hydroxide (0.040 mmol) was added
The asymmetric unit consists of half of the coordination moiety and five water molecules, while the other half is formed by an inversion centre
Summary
Due to the modelling of active sites of some zinc enzymes, and of active sites of the non-heme iron enzymes, which are required in oxygen activation, diverse tripodal heteroscorpionate N,N,O ligands have been prepared in last decades Such type of compounds can serve as suitable structural mimics for the facial 2-His-1-carboxylate triad, since they express high binding affinity to occupy a trigonal face of coordination polyhedron.[1,2,3,4] Numerous compounds based on bis(pyrazol-1-yl)acetate with pyrazolyl rings substituted at 3 and 5 positions are reported.[5]. Počkaj and Kitanovski: A Novel Tetranuclear Silver Compound with bis(3,5-dimethylpyrazol-1-yl)acetate:
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