Oxoclusters of the lanthanides begin to resemble solid-state materials at very small cluster sizes: Structure and NIR emission from Nd(III)

Santanu Banerjee, G. Ajith Kumar, Richard E. Riman, Thomas J. Emge, John G. Brennan

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

The reaction of Nd(SePh)3 with SeO2 and Hg in pyridine gives the dodecanuclear cluster [(py)18Nd12O 6Se4(Se2)4(SePh)4(Se 2Ph)2Hg2(SePh)4][(Hg(SePh) 3]2. In this compound the 12 Nd(III) ions are stacked in four sets of Nd3, with pairs of tetrahedral oxo ligands separating the Nd3 planes and Se, SeSe, SePh, pyridine, and HgSePh groups encapsulating the oxo core. Both the Nd-O bond lengths and the geometries about the oxo ions are remarkably similar to those found in solid-state Nd 2O3. Near-IR emission experiments indicate that the cluster emission properties are less intense than those of highly emissive (DME)2Nd(SC6F5)3 or (THF) 8Nd8O2Se2(SePh)16 but brighter than the nonemissive solid-state compound Nd2O3. Intensity variations are interpreted in terms of concentration quenching and phonon relaxation.

Original languageEnglish (US)
Pages (from-to)5926-5931
Number of pages6
JournalJournal of the American Chemical Society
Volume129
Issue number18
DOIs
StatePublished - May 9 2007

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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