Syntheses and crystal structures of lanthanide complexes of new 15-membered macrocyclic ligands with three pendant acetato groups

Ying Ming Yao, Qi Shen, Wing Tak Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Two new 15-membered functionalized macrocycles, dioxopolyazacycloalkanes with three pendant acetate groups, have been synthesized by the condensation reaction of DTPA dianhydride (DTPA = diethylenetriaminepentaacetic acid) with 1,2-diaminopropane, (15-DTPA-1, 2-pn), or 1, 2-diaminocyclohexane, (15-DTPA-1,2-cy). Their lanthanide complexes [Ln(15-DTPA-1,2-pn) (H2O)]2[Ln = Eu (1), Gd (2)] and [Ln(15-DTPA-1,2-cy) (H2O)]2[Ln = Eu (3), Gd (4)] were also prepared. Single crystal X-ray diffraction analyses of complexes 2 and 4 show that they hare dimeric structures in solid state; each metal ion is nine-coordinated in a distorted tricapped-trigonal prism. In complex 4, the coexistence of two diastereoisomeric molecules in the crystal lattice was observed.
Original languageEnglish
Pages (from-to)1213-1218
Number of pages6
JournalChinese Journal of Chemistry
Volume21
Issue number9
Publication statusPublished - 1 Sep 2003
Externally publishedYes

Keywords

  • Crystal structure
  • Lanthanide complex
  • Macrocyclic ligand
  • Synthesis

ASJC Scopus subject areas

  • Chemistry(all)

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