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Journal of Coordination Chemistry Volume 65, 2012 - Issue 6
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Original Articles

Hydrothermal synthesis, structure, and properties of two new nanosized Ln26 (Ln = Ho, Er) clusters

Lei Chen College of Chemistry and Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, P.R. China
,
Lian Huang College of Chemistry and Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, P.R. China
,
Congling Wang College of Chemistry and Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, P.R. China
,
Jie Fu College of Chemistry and Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, P.R. China
,
Deng Zhang College of Chemistry and Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, P.R. China
,
Dunru Zhu College of Chemistry and Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, P.R. China
&
Yan Xu College of Chemistry and Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, P.R. China; Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, P.R. ChinaCorrespondence[email protected]
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Pages 958-968 | Received 16 Nov 2011, Accepted 09 Jan 2012, Published online: 27 Feb 2012
 
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Abstract

Two new compounds, [Ho26(IN)28(CH3COO)4(CO3)10(OH)26(H2O)18] · 20H2O (1) (HIN = isonicotinic acid) and [Er26(IN)29(CH3COO)3(CO3)10(OH)26(H2O)19] · 26H2O (2), employing the building unit of CO3@Ln26 have been synthesized hydrothermally. Compound 1 crystallizes in the triclinic space group with a = 21.043(4) Å, b = 21.128(5) Å, c = 35.140(8) Å, α = 85.838(3)°, β = 74.909(3)°, γ = 85.414(3)°, V = 15,014(6) Å3, Z = 2; 2 crystallizes in triclinic with a = 20.9968(15) Å, b = 21.1260(15) Å, c = 35.125(3) Å, α = 85.9530(10)°, β = 74.7590(10)°, γ = 85.5020(10)°, V = 14,966.3(18) Å3, Z = 2. In the structures of both compounds, the isonicotinate (IN) is the main ligand while CH3COO− functions as the second ligand to stabilize the Ln26 cluster; plays a very important role in the formation of the spherical Ln26 cluster. The two compounds are isostructural and have been characterized by single-crystal X-ray diffraction, IR absorption spectroscopy, thermogravimetric analysis, ultraviolet excitation, and emission spectrum.

Acknowledgments

We thank the National Natural Science Foundation of China (20971068) for financial support.

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