abstract
A series of lanthanide pimelates [Sm(phen)(Hpim)(pim)](n)center dot 1.5nH(2)O (1, phen = 1,10-phenanthroline, H(2)pim = pimelic acid), and [Ln(phen)(pim)](n)center dot nClO(4)center dot nH(2)O [Ln = Gd (2a), Tb (2b), Er (2c)] have been hydrothermally synthesized and characterized structurally by elemental analysis, IR spectroscopy, thermogravimetric analysis and PXRD. Compound 1 contains 1-D neutral [Sm(phen)(Hpim)(pim)](n) chain that is constructed by the linkages of [Sm(phen)] ions and pim(2-) /Hpim(-) ligands, while compounds 2a-c contain 1-D cationic [Ln(phen)(pim)(+)](n) chain with ClO4- ion as counterion. Although a lot of lanthanide coordination polymers were obtained with aliphatic dicarboxylic acids, they usually show neutral frameworks. Compounds 2a-c provide the only examples of cationic lanthanide pimelate frameworks decorated by phen chromophores. The photoluminescent properties of 1 and 2b-c, and magnetic properties of all compounds have been studied. (C) 2017 Elsevier B.V. All rights reserved.
keywords
EARTH COORDINATION POLYMERS; METAL-ORGANIC FRAMEWORKS; CRYSTAL-STRUCTURES; HYDROTHERMAL SYNTHESIS; STRUCTURAL-CHARACTERIZATION; 3-DIMENSIONAL NETWORKS; LUMINESCENT PROPERTIES; MAGNETIC-PROPERTIES; ANION-EXCHANGE; MIL-N
subject category
Chemistry
authors
Jiang, TT; Zhou, J; Li, R; Zou, HH; Fu, LS
our authors
Lianshe Fu
Assistant Researcheracknowledgements
This work was supported by the NNSF of China (Nos. 21671029 and 21601038), the NSF of Chongqing municipality (No. cstc2015j-cyjBX0117), Program for leading talents of scientific and technological innovation in Chongqing municipality (No. CSTCCXLJRC201707), Program for Excellent Talents in Chongqing Higher Education Institutions, Fundacao para a Ciencia e a Tecnologia (FCT, Portugal), the European Union, QREN, FEDER through Programa Operacional Factores de Competitividade (COMPETE), and CICECO-Aveiro Institute of Materials, POCI-01-0145-FEDER-007679 (FCT Ref. UID/CTM/50011/2013), financed by national funds through the FCT/MEC and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement. The authors are also grateful to Chongqing Normal University for financial support (14CSLJ02) and the innovative training program of university student (201610637008).