Synthesis, crystal structures and luminescent properties of two 4d-4f Ln-Ag heterometallic coordination polymers based on anion template

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.02.019· OSTI ID:21504064

Fan, Le-Qing ^[1]; Chen, Yuan ^[1]; Wu, Ji-Huai ^[1]; Huang, Yun-Fang ^[1]

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1. Institute of Materials Physical Chemistry, and the Key Laboratory for Functional Materials of Fujian Higher Education, Huaqiao University, Quanzhou, Fujian 362021 (China)

Two new 4d-4f Ln-Ag heterometallic coordination polymers, {l_brace}[Ln{sub 3}Ag{sub 5}(IN){sub 10}(H{sub 2}O){sub 7}].4(ClO{sub 4}).4(H{sub 2}O){r_brace}{sub n} (Ln=Eu (1) and Sm (2), HIN=isonicotinic acid), have been synthesized under hydrothermal conditions by reactions of Ln{sub 2}O{sub 3}, AgNO{sub 3}, HIN and HClO{sub 4}, and characterized by elemental analysis, IR, thermal analysis and single-crystal X-ray diffraction. It is proved that HClO{sub 4} not only adjusts the pH value of the reaction mixture, but also acts as anion template. The structure determination reveals that 1 and 2 are isostructural and feature a novel two-dimensional (2D) layered hetrometallic structure constructed from one-dimensional Ln-carboxylate chains and pillared Ag(IN){sub 2} units. The 2D layers are further interlinked through Ag...Ag and Ag...O(ClO{sub 4}{sup -}) multiple weak interactions, which form a rare Ag-ClO{sub 4} ribbon in lanthanide-transition metal coordination polymers, to give rise to a three-dimensional supramolecular architecture. Moreover, the luminescent properties of these two compounds have also been investigated at room temperature. -- Graphical abstract: Two new anion-templated 2D 4d-4f Ln-Ag heterometallic coordination polymers based on novel lanthanide-carboxylate chains and pillared Ag(IN){sub 2} units, {l_brace}[Ln{sub 3}Ag{sub 5}(IN){sub 10}(H{sub 2}O){sub 7}].4(ClO{sub 4}).4(H{sub 2}O){r_brace}{sub n} (Ln=Eu (1) and Sm (2), HIN=isonicotinic acid), have been hydrothermally synthesized and structurally characterized. 1 and 2 exhibit good luminescent properties. Display Omitted Research highlights: > Two 2D Eu (Sm)-Ag coordination polymers templated by perchlorate anion have been synthesized. > Polymers consist of novel 1D lanthanide-carboxylate chains. > In both structures, there are rare Ag...Ag and Ag...O(ClO{sub 4}{sup -}) multiple weak interactions. > Both compounds exhibit good luminescent properties.

• OSTI ID: 21504064
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 4 Vol. 184; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ANIONS
BASIC INTERACTIONS
CHARGED PARTICLES
CHLORINE COMPOUNDS
COHERENT SCATTERING
COMPLEXES
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
EMISSION
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROTHERMAL SYNTHESIS
INORGANIC ACIDS
INORGANIC COMPOUNDS
INTERACTIONS
IONS
LAYERS
LUMINESCENCE
MONOCRYSTALS
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PERCHLORATES
PERCHLORIC ACID
PHOTON EMISSION
POLYMERS
RARE EARTH COMPLEXES
SCATTERING
SILVER COMPOUNDS
SILVER NITRATES
SYNTHESIS
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
THERMAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS
WEAK INTERACTIONS
X-RAY DIFFRACTION