The reactivity of diphenyllead(IV) dichloride with dissymmetric thiosemicarbazone ligands: obtaining monomers, coordination polymers, and an organoplumboxane

Ester Sesmero, David G. Calatayud, Josefina Perles, Elena López-Torres, M. Antonia Mendiola

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The reaction of PbPh2Cl2 with two dissymmetric thiosemicarbazone ligands containing diacetyl 4-methyl-3-thiosemicarbazone and hydrazonepyridine or hydrazonequinoline arms led to four new mononuclear complexes, [PbPh2(L)] (1 and 3) and [PbPh2Cl(HL)] (2 and 4). Reactions with the hydrazonequinoline ligand strongly depend on the reaction conditions and several unexpected compounds were isolated. At room temperature, in addition to complex 4, the polymeric compound [PbPh2Cl2CH3OH]n (5) was isolated, whereas under heating at reflux a symmetrization took place and a polymer containing diacetyl bis(4-methyl-3-thiosemicarbazone), [PbPh2Cl2(H2ATSM)]n (6) was obtained. When PbPh2Cl2 was heated at reflux in wet dichloromethane with LiOH·H2O, the tetranuclear organoplumboxane [Pb4Ph8Cl4O2] (7) was isolated, which, to the best of our knowledge, is the first organoplumboxane to be crystallographically characterized. All the compounds were thoroughly characterized, including by 207Pb NMR and single-crystal XRD. In addition, the hydrazonequinoline ligand has demonstrated its potential application as a chromophoric probe in the visible region for organolead(IV) species.

Original languageEnglish
Pages (from-to)1044-1053
Number of pages10
JournalEuropean Journal of Inorganic Chemistry
Volume2016
Issue number7
DOIs
Publication statusPublished - 1 Mar 2016

Keywords

  • Coordination modes
  • Lead
  • Organoplumboxane
  • Polymers
  • Structure elucidation

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