Identification of the structural boundary between [Ln(18-crown-6)(NO3)3] and [Ln(NO3)3(H2O)3] · 18-crown-6 Motifs in the lanthanide Series
Jones, Cameron, Junk, Peter C., Smith, Matthew K., and Thomas, Ryan C. (2000) Identification of the structural boundary between [Ln(18-crown-6)(NO3)3] and [Ln(NO3)3(H2O)3] · 18-crown-6 Motifs in the lanthanide Series. Zeitschrift für Anorganische und Allgemeine Chemie, 626 (12). pp. 2491-2497.
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Abstract
Recrystallization of Ln(NO₃)₃ (Ln = Sm, Eu, Yb) in the presence of 18-crown-6 under aqueous conditions yielded [Ln(NO₃)₃(H₂O)₃] · 18-crown-6. X-ray crystallography revealed isomorphous structures for each of the lanthanide complexes where [Ln(NO₃)₃(H₂O)₃] is involved in hydrogen bonding interactions with 18-crown-6. The transition point where the structural motif changes from [Ln(18-crown-6)(NO₃)₃] (with the metal residing in the crown cavity) to [Ln(NO₃)₃(H₂O)₃] · 18-crown-6 has been identified as at the Nd/Sm interface. A similar investigation involving [Ln(tos)₃(H₂O)₆] (tos = p-toluenesulfonate) and 18-crown-6 were resistant to crown incorporation. X-ray studies show extensive intra- and intermolecular hydrogen bonding is present.
| Item ID: | 13059 |
|---|---|
| Item Type: | Article (Research - C1) |
| ISSN: | 1521-3749 |
| Date Deposited: | 16 Jul 2012 03:01 |
| FoR Codes: | 03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030202 f-Block Chemistry @ 100% |
| SEO Codes: | 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100% |
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