Mercury(II)-dien complexes (dien ≡ diethylene triamine). First example of dien-bridged Hg(II) dimer. Syntheses, characterization and X-ray crystal structures of [Hg2(dien)3](ClO4)4 and [Hg(dien)(H2O)](PF6)2

Goutam Kumar Patra, Israel Goldberg*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The reaction of mercury(II) acetate with diethylene triamine (dien) in the presence of NaX (X- = ClO4- and PF6-) afforded two completely different products. When the anion is smaller (ClO4-), the product is a dien bridged mercury(II) dimer of the formulation [Hg2(dien)3](ClO4)4 (1), which is a first example of dien-bridged dimeric metal complex of mercury. However, with a larger anion as PF6-, the product is only a monomeric mercury(II) complex [Hg(dien)(H2O)](PF6)2 (2). The complexes 1 and 2 have been characterized by elemental analysis, NMR, IR and FAB mass spectroscopy, as well as by X-ray diffraction analysis. Cyclic voltammetry of 1 and 2 in DMF shows irreversible oxidative voltammograms at a glassy carbon electrode, with E1/2 = 0.030 and 0.026 V versus SCE, respectively, at scan rate 50 mV s-1

Original languageEnglish
Pages (from-to)2195-2199
Number of pages5
JournalPolyhedron
Volume21
Issue number21
DOIs
StatePublished - 15 Sep 2002

Keywords

  • Diethylene triamine
  • Dimer
  • Hg(II) complexes
  • X-ray crystal structures

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