Solution and solid-state structures of lanthanide nitrate complexes with [(MeO)2P(O)]2C(OH)R (R=Me, tBu)

Autor:	Anthony M.J. Lees, Roman A. Kresinski, John M. Charnock, Andrew W.G. Platt
Rok vydání:	2001
Předmět:	Lanthanide Extended X-ray absorption fine structure Chemistry Coordination number Infrared spectroscopy Conductivity Inorganic Chemistry Metal Crystallography visual_art Materials Chemistry visual_art.visual_art_medium Physical and Theoretical Chemistry Absorption (chemistry) Single crystal
Zdroj:	Inorganica Chimica Acta. 312:170-182
ISSN:	0020-1693
DOI:	10.1016/s0020-1693(00)00366-2
Popis:	The complexes Ln(NO3)3La 2 (La=[(MeO)2P(O)]2C(OH)Me; Ln=La–Er) and Ln(NO3)3Lb 2 (Lb=[(MeO)2P(O)]2C(OH)tBu); Ln=La–Lu) have been synthesised. The solid-state structures examined by IR spectroscopy, single crystal X-ray diffraction and extended X-ray absorption fine structure show uniformity across the series up to Dy, the metal being ten coordinate. Solution structures have been examined by 31P NMR spectroscopy, conductivity, electrospray mass spectrometry and EXAFS, and results indicate that solution structures fall into two groups, one for the lighter (La–Sm) and one for the heavier (Eu–Lu) lanthanides. This structural change involves the diphosphonate ligands, which appear to be monodenate for the heavier metals, affording these a coordination number of eight.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3c5406c11c186a03a03d8b5c3276b827 https://doi.org/10.1016/s0020-1693(00)00366-2 Zobrazit plný text záznamu Full Text from ScienceDirect