resumo
Reaction of lanthanide oxides, cadmium acetate and 3,5-pyrazoledicarboxylic acid under hydrothermal conditions afforded five new isostructural 4d-4f hetero-metal organic frameworks, [Cd(3)Ln(pdc)(3)(H2O)] {H(3)pdc = 3,5-pyrazoledicarboxylic acid, Ln = La (1), Pr (2), Nd (3), Sm (4) and Eu (5)}. All compounds were characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy. The compounds feature a very interesting 3D structure built up from a secondary building unit, [Cd(12)Ln(8)(pdc)(6)], and possess a new topology type and complicated unique tiling. The solid state photoluminescence properties of compounds 3-5 were investigated at room temperature.
palavras-chave
HETEROMETALLIC COORDINATION POLYMERS; CU(II)LN(III) DINUCLEAR UNITS; SINGLE-MOLECULE MAGNET; INORGANIC SUBNETWORK; BUILDING-BLOCKS; EXTENDED ARRAYS; COMPLEXES LN; LUMINESCENCE; CLUSTER; ACID
categoria
Chemistry
autores
Yang, TH; Ferreira, RAS; Carlos, LD; Rocha, J; Shi, FN
nossos autores
Fa-Nian Shi
Investigador
João Rocha
Prof. Catedrático
Luís Carlos
Professor Catedrático
Maria Rute de Amorim e Sá Ferreira André
Professor Catedrático
Tinghai Yang
Bolseiro de pós-DoutoramentoProjectos
agradecimentos
We thank Fundacao para a Ciencia e a Tecnologia (FCT), FEDER, QREN, COMPETE (PEst-C/CTM/LA0011/2013) and (FCT: SFRH/BPD/74582/2010) for financial support. F.-N. SHI acknowledges FCT for PTDC/CTM-NAN/119994/2010. T.-H. Yang acknowledges the Natural Scientific Foundation for Universities in Jiangsu Province (13KJB150013) and the Science and Technology Bureau of Changzhou City (Project no. CJ20110014).