TY - JOUR
T1 - Fluorite topology in lanthanoid coordination polymers with Di- and trimetallic building blocks
AU - Gotthardt, Jan M.
AU - White, Keith F.
AU - Abrahams, Brendan F.
AU - Ritchie, Chris
AU - Boskovic, Colette
PY - 2012/9/5
Y1 - 2012/9/5
N2 - Reaction of the pseudotetrahedral tetracarboxylic acid proligand tetrakis(4-carboxyphenyl)silane (H 4L) with salts of various lanthanoid metals has afforded three new lanthanoid coordination polymers: {[H 3O] 2[Ce 2(L) 2(H 2O) 2]•2DMF•2H 2O} ∞ (1), {[Eu 3L 2(NO 3)(DMF) 4(H 2O)] •0.5DMF•6H 2O} ∞ (2), and {Eu(HL)(DMF) 2(H 2O)]•DMF•2.5H 2O} ∞ (3) (DMF = N,N′-dimethylformamide), which have been structurally characterized by single-crystal X-ray diffraction. Compounds 1 and 2 are both noninterpenetrated three-dimensional networks that display the rare fluorite (CaF 2) topology. In compound 1, the fully deprotonated L 4- ligands act as pseudotetrahedral 4-connecting nodes and dinuclear cerium-carboxylate building blocks act as 8-connecting nodes, while in compound 2 the L 4- ligands and trinuclear europium-carboxylate units are 4- and 8-connecting, respectively. In contrast, compound 3 exhibits a two-dimensional layered structure with triply deprotonated HL 3- ligands acting as 3-connecting units, linking single europium centers within each layer. Gas sorption studies of 2 show a high affinity of the pretreated microcrystalline solid for carbon dioxide gas.
AB - Reaction of the pseudotetrahedral tetracarboxylic acid proligand tetrakis(4-carboxyphenyl)silane (H 4L) with salts of various lanthanoid metals has afforded three new lanthanoid coordination polymers: {[H 3O] 2[Ce 2(L) 2(H 2O) 2]•2DMF•2H 2O} ∞ (1), {[Eu 3L 2(NO 3)(DMF) 4(H 2O)] •0.5DMF•6H 2O} ∞ (2), and {Eu(HL)(DMF) 2(H 2O)]•DMF•2.5H 2O} ∞ (3) (DMF = N,N′-dimethylformamide), which have been structurally characterized by single-crystal X-ray diffraction. Compounds 1 and 2 are both noninterpenetrated three-dimensional networks that display the rare fluorite (CaF 2) topology. In compound 1, the fully deprotonated L 4- ligands act as pseudotetrahedral 4-connecting nodes and dinuclear cerium-carboxylate building blocks act as 8-connecting nodes, while in compound 2 the L 4- ligands and trinuclear europium-carboxylate units are 4- and 8-connecting, respectively. In contrast, compound 3 exhibits a two-dimensional layered structure with triply deprotonated HL 3- ligands acting as 3-connecting units, linking single europium centers within each layer. Gas sorption studies of 2 show a high affinity of the pretreated microcrystalline solid for carbon dioxide gas.
UR - http://www.scopus.com/inward/record.url?scp=84865835776&partnerID=8YFLogxK
U2 - 10.1021/cg3006103
DO - 10.1021/cg3006103
M3 - Article
AN - SCOPUS:84865835776
SN - 1528-7483
VL - 12
SP - 4425
EP - 4430
JO - Crystal Growth & Design
JF - Crystal Growth & Design
IS - 9
ER -