Trivalent Lanthanide Chalcogenolates: Ln(SePh)3, Ln2(EPh)6, Ln4(SPh)12, and [Ln(EPh)3]n (E = S, Se). How Metal, Chalcogen, and Solvent Influence Structure

Autor:	Deborah Freedman, Thomas J. Emge, Jongseong Lee, Jonathan Melman, F. H. Long, Meggan Brewer, John G. Brennan, Lei Sun
Rok vydání:	1998
Předmět:	Lanthanide Chemistry Stereochemistry Metal ions in aqueous solution Ion Inorganic Chemistry Solvent Metal Crystallography chemistry.chemical_compound Chalcogen visual_art Pyridine visual_art.visual_art_medium Physical and Theoretical Chemistry Spectroscopy
Zdroj:	Inorganic Chemistry. 37:2512-2519
ISSN:	1520-510X 0020-1669
DOI:	10.1021/ic9716161
Popis:	A series of trivalent lanthanide (Ln) benzenechalcogenolate (EPh, E = S, Se) complexes have been prepared and structurally characterized in an attempt to evaluate how metal size, chalcogen, and solvent influence structure and physical properties. The compounds [(py)3Ln(SPh)3]2 (Ln = Ho (1) and Tm (2)), [(py)2Sm(SPh)3]4 (3), [(THF)Sm(SPh)3]4n (4), (THF)3Ln(SePh)3 (Ln = Tm (5), Ho (6), Er (7)), [(py)3Sm(SePh)3]2 (8), and [(THF)4Ln3(SePh)9]n (Ln = Pr (9), Nd (10), and Sm (11)) were isolated and characterized by IR, NMR, and UV−visible spectroscopy. Compounds 2−4, 7, 8, and 10 have also been characterized by low-temperature single-crystal X-ray diffraction. Three trends in structure are clear. First, the tendency to form oligomeric structures is found to increase with the size of the lanthanide ion. Second, thiolates bridge metal ions to form polynuclear structures more effectively than selenolates. Finally, pyridine displaces bridging chalcogenolates to form less extended structures more effectively than THF...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::14cb5abdb08414fec9f60de0a98dd1f4 https://doi.org/10.1021/ic9716161 Zobrazit plný text záznamu