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Pyrazolonato complexes of lead. Crystal structures of bis(1-phenyl-3-methyl-4-acetyl pyrazolonato)lead(II) and bis(1-phenyl-3-methyl-4-butanoylpyrazolonato)lead(II) |
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| Authors: | B. Augustus Uzoukwu P. U. Adiukwu Salih S. Al-Juaid Peter B. Hitchcock J. David Smith |
| Affiliation: | a Department of Pure and Industrial Chemistry, University of Port Harcourt, Port Harcourt, Nigeria b Department of Chemistry, Rivers State University of Science and Technology, Port Harcourt, Nigeria c The School of Chemistry and Molecular Science, The University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, UK |
| Abstract: | The structures of the complexes [PbL2], L = 1-phenyl-3-methyl-4-acylpyrazolonato, RCOC10H8N2O, R = Me (2) or Pr (3), have been determined by X-ray diffraction studies. Compound 2 is monoclinic, space group P21, A = 11.285(4), B = 14.727(4), C = 20.749(5) Å, β = 95.83(3)°, R = 0.039 for 4486 reflections, and 3 is monoclinic, space group C2/c, A = 27.528(11), B = 7.245(11), C = 14.264(7) Å, β = 113.6(3)°, R = 0.021 for 2118 reflections. There are three different lead environments in 2 but only one in 3. In each case the lead atom makes four strong bonds to oxygen and two weaker bonds to either oxygen or nitrogen in adjacent molecules. |
| Keywords: | Crystal structures lead complexes Pyrazolonato complexes |
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