Synthesis and Structure of a Trigonal Planar Complex with Pyrazole Ligands, [Cu(3,5-Ph2PzH)3][Cl]


The crystal structure of a trigonal planar copper(I) complex, [Cu-(3,5-Ph2PzH)3][Cl], is reported. In the title compound, one nitrogen atom from each pyrazole ligand is coordinated to the copper(I) ion and each N–H of the pyrazoles forms a hydrogen-bond with the chloride resulting in a trigonal planar geometry about the copper(I) ion. The complex crystallizes in the trigonal space group R \(\overline 3\) with a = b = 13.031(1) Å, c = 37.3187(9) Å, α = β = 90o, γ = 120o , V = 5464.5(2) Å3, Z = 6.

Graphical Abstract

A trigonal planar copper(I) complex with three pyrazole ligands is reported in which the hydrogens of the bound pyrazole ligands are hydrogen bonded with the chloride counter ion.

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Fig. 1


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We thank the National Science Foundation (Grant No. CHE-103689) for funding the X-ray diffractometer at Illinois State University. Two of the authors (J. Lugo and T. Ch-G) are grateful to the Ronald E. McNair program (IAUPR-SG; CFDA No. 84.217A grant) for an undergraduate scholarship and financial support.

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Correspondence to Tulio Chavez-Gil or Christopher G. Hamaker.

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Chavez-Gil, T., Lugo, J., Cedeño, D.L. et al. Synthesis and Structure of a Trigonal Planar Complex with Pyrazole Ligands, [Cu(3,5-Ph2PzH)3][Cl]. J Chem Crystallogr 45, 189–192 (2015).

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  • Pyrazole
  • Crystal structure
  • Copper
  • Hydrolysis
  • Hydrogen bonding