Heavy metal complexes of macrocyclic trithioethers

Monte L. Helm, Kristi D. Loveday, Charles M. Combs, Elizabeth L. Bentzen, Donald G. VanDerveer, Robin D. Rogers, Gregory J. Grant

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


We report here two crystal structures of heavy metal complexes containing macrocyclic trithioethers. The trithioether, 10S3 (1,4,7-trithiacyclodecane) complexes Pb(II) to form a compound of the formula [Pb(10S3)](ClO 4)2(H2O) (Compound 1). This behavior contrasts the related trithioether 9S3 (1,4,7-trithianonane), which readily forms a bis Pb(II) complex. Crystals of Compound 1 consist of [Pb(10S3)(H 2O)]2+ units and perchlorate anions which are weakly bound to the Pb2+ center. The two perchlorate anions serve as bidentate ligands to a single lead(II) center. However, a third oxygen in one of the perchlorates also serves as a bridging group between two lead(II) centers, linking the [Pb(10S3)(H2O)]2+ units into zigzag chains. Thus, a highly irregular nine-coordinate (S3O6) environment around the Pb2+ion is formed by the three sulfur donors from the 10S3 ligand, one coordinated water, and five oxygens from three different perchlorate anions. Also, the lone pair electrons on the Pb center are stereochemically active. Compound 2, [Cd(9S3)2](ClO 4)2 · 2 CH3NO2, forms a distorted octahedral structure with unusual hexakis(thioether) coordination to the Cd(II) center. Bond distances and angles are very comparable to those found in the structure of the tetrafluoroborate salt of the complex cation. (1): P21/c, a = 9.1720(6) Å, b = 15.7687(11) Å, c = 11.8427(8) Å, β= 93.0180(10)°, V = 1710.4 (2) Å3, Z = 4; (2): P21/c, a = 10.4305(10) Å, b = 15.2059(6) Å, c = 9.4919(7) Å, β = 99.324(9)°, V = 1485.6(2) Å3, Z = 2.

Original languageEnglish
Pages (from-to)447-455
Number of pages9
JournalJournal of Chemical Crystallography
Issue number5-6
Publication statusPublished - Jun 2003


  • 1,4,7-trithiacyclononane
  • Cadmium complexes
  • Crown thioethers
  • Lead complexes
  • Stereochemically active lone pair

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Heavy metal complexes of macrocyclic trithioethers'. Together they form a unique fingerprint.

Cite this