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Synthesis, structure and fluorescence properties of a novel 3D Sr(II) coordination polymer
被引:3
|作者:
Tan, Yu-Hui
[1
]
Xu, Qing
[1
]
Gu, Zhi-Feng
[1
]
Gao, Ji-Xing
[1
]
Wang, Bin
[1
]
Liu, Yi
[1
]
Yang, Chang-Shan
[1
]
Tang, Yun-Zhi
[1
]
机构:
[1] Jiangxi Univ Sci & Technol, Sch Met & Chem Engn, Ganzhou 341000, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Strontium complex;
2,2 '-bipyridine-5,5 '-dicarboxylic acid;
Fluorescence properties;
METAL-ORGANIC FRAMEWORKS;
2+3 CYCLOADDITION SYNTHESIS;
MAGNETIC-PROPERTIES;
ACID;
LIGANDS;
LUMINESCENCE;
ENANTIOMERS;
DERIVATIVES;
NETWORKS;
D O I:
10.1016/j.molstruc.2016.04.074
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Solvothermal reaction of 2,2'-bipyridine-5,5'-dicarboxylic acid (H(2)bpdc) and SrCl2 affords a novel coordination polymer [Sr(Hbpdc)(2)](n) 1. X-ray structure determination shows that I exhibits a novel three-dimensional network. The unique Sr (II) cation sits on a two-fold axis and coordinated by four O-atom donors from four Hbptc(-) ligands and four N-atom donors from two Hbptc(-) ligands in distorted dodecahedral geometry. In 1 each Sr (II) cation connects to six different Hbptc(-) ligands and each Hbptc(-) ligand bridges three different Sr (II) cations which results in the formation of a three-dimensional polymeric structure. Corresponding to the free ligand, the fluorescent emission of complex 1 display remarkable "Einstain" shifts, which may be attributed to the coordination interaction of Sr atoms, thus reduce the rigidity of pyridyl rings. (C) 2016 Elsevier B.V. All rights reserved.
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页码:346 / 350
页数:5
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