Formation of very large rings in polymeric lanthanide complexes of N,N′-p-phenylenedimethylenebis(pyrrolidin-2-one)

Autor:	Stephan Menzer, Andrew T. Ross, David M.L. Goodgame, David J. Williams
Rok vydání:	1996
Předmět:	Lanthanide Denticity Crystal structure Triclinic crystal system Inorganic Chemistry Metal Crystallography Perchlorate chemistry.chemical_compound chemistry visual_art Materials Chemistry visual_art.visual_art_medium Physical and Theoretical Chemistry Single crystal Monoclinic crystal system
Zdroj:	Inorganica Chimica Acta. 251:141-149
ISSN:	0020-1693
DOI:	10.1016/s0020-1693(96)05266-8
Popis:	The synthesis is reported of N,N′-p-phenylenedimethylenebis(pyrrolidin)-2-one) (p-XBPYR), a range of lanthanide (Ln) complexes of types Ln2(NO3)6(p-XBPYR)3 and Ln(p-XBPYR)3(ClO4)3(H2O)3, and the compounds Y2(NO3)6(p-XBPYR)3 and Pr(p-XBPYR)3(ClO4)3·0.5(CH3CN). Single crystal X-ray diffraction studies show that crystals of [Tb2(NO3)6(p-XBPYR)3] are triclinic, space group P 1 , a=8.624(2), b=9.558(2), c=18.294(3) A , α=85.15(2), β=86.76(2), γ=81.18(2)°, Z=2 . The p-XBPYR ligands bridge Tb centres so as to form sheets of contiguous 78-membered rings. Crystal of Pr(p-XBPYR)3(ClO4)3·0.5(CH3CN) are monoclinic, space group P2/n, a=14.063(1), b=11.500(1), c=18.388(1) A , β=91.10(2)°, Z=2 . The p-XBPYR ligands again bridge the metal centres but in this case a complex array of 52- and 26-membered rings is formed. Each Pr atom has a bidentate perchlorate group bonded to it, but the other perchlorates are present as anions in the lattice.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1d598239f4c2ff075848221e81b581a7 https://doi.org/10.1016/s0020-1693(96)05266-8 Zobrazit plný text záznamu Full Text from ScienceDirect