A new paradigmatic lanthanide coordination chemistry: Assembling lanthanide-hydroxo clusters under physiological or higher-pH conditions

Rui Yao Wang, Tian Zhu Jin, Zhi Ping Zheng

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

High-nuclearity lanthanide-hydroxo complexes were prepared via limited hydrolysis of lanthanides using α-amino acids or EDTA as supporting ligands. These novel substances, synthesized under physiological or even higher-pH conditions, exist as tetranuclear cuboid [Ln 43-OH 4] 8+ core-containing clusters. With appropriate halide templates, "wheel-like" supramolecular structures composed of four or five vertex-sharing [Ln 43-OH) 4] 8+ units are formed. The face-capped octahedral [Ln 66-O)(μ 3-OH) 8] 8+ cluster centering on an interstitial μ 6-O ligand is another stable form of lanthanide-hydroxo complexes and can be self-assembled via direct hydrolysis of lanthanide nitrates and perchlorates. The significant influence of pH conditions on lanthanide coordination chemistry is further illustrated by a new paradigmatic lanthanide-EDTA chemistry, wherein unprecedented multinuclear Ln-EDTA cluster complexes are realized.

Original languageEnglish (US)
Pages (from-to)1481-1492
Number of pages12
JournalActa Chimica Sinica
Volume58
Issue number12
StatePublished - Dec 1 2000

ASJC Scopus subject areas

  • Chemistry(all)

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