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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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 Type:||Article (Refereed Research - C1)|
|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%|
|Deposited On:||16 Jul 2012 13:01|
|Last Modified:||04 Dec 2012 14:51|
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