Yotnoi, Bunlawee and Rujiwatra, Apinpus and Reddy, MLP and Sarma, Debajit and Natarajan, Srinivasan (2011) Lanthanide Sulfate Frameworks: Synthesis, Structure, and Optical Properties. In: Crystal Growth & Design, 11 (4). pp. 1347-1356.
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Abstract
Layered lanthanide sulfate compounds with three different structures have been prepared and characterized. The compounds C10H10N2] La(SO4)(2)]center dot 2H(2)O (I), C10H10N2] La(SO4)(2)(H2O)(2)](2) (Ha), C10H10N2]Pr(SO4)(2)(H2O)(2)](2) (IIb), C10H10N2]Nd-2(SO4)(4)(H2O)(2)](2) (IIIa), C10H10N2]Sm-2(SO4)(4)(H2O)(2)](2) (IIIb), and C10H10N2]Eu-2(SO4)(4)(H2O)(2)] 2 (IIIC) have anionic lanthanide sulfate layers separated by protonated bipyridine molecules. The layers are formed by the connectivity between the lanthanide polyhedra and sulfate tetrahedra. The formation of a two-dimensional La-O-La layer (la), Pr-O-Pr chains (IIb), and a tetramer cluster (IIIa) is noteworthy. The compounds exhibit honeycomb (I), square (IIa, IIb), and honeycomb (IIIa-IIIc) net arrangements, when the connectivity between the lanthanide ions is considered. Optical studies indicate the observation of characteristic metal-centered emission at room temperature. The Nd compound (IIIa) exhibits a two-photon upconversion behavior.
Item Type: | Journal Article |
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Publication: | Crystal Growth & Design |
Publisher: | American Chemical Society |
Additional Information: | Copyright of this article belongs to American Chemical Society. |
Department/Centre: | Division of Chemical Sciences > Solid State & Structural Chemistry Unit |
Date Deposited: | 19 Apr 2011 07:26 |
Last Modified: | 19 Apr 2011 07:26 |
URI: | http://eprints.iisc.ac.in/id/eprint/36972 |
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