Synthesis and structural characterization of silver (I)-(D-, L- and DL-) aspartate and silver (I)-(D- and L-) glutamate coordination polymers
Chiral assemblies of metal atoms linked by organic ligands are attracting considerable attention for their unique structural aesthetics and interesting properties. In order to explore the novel helical supramolecular of silver with amino acid complexes and develop the potential applications of them,...
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ndltd-arizona.edu-oai-arizona.openrepository.com-10150-6267992018-02-28T03:00:40Z Synthesis and structural characterization of silver (I)-(D-, L- and DL-) aspartate and silver (I)-(D- and L-) glutamate coordination polymers Zhang Yongtao Zhang Yongtao Zheng, Zhiping Chiral assemblies of metal atoms linked by organic ligands are attracting considerable attention for their unique structural aesthetics and interesting properties. In order to explore the novel helical supramolecular of silver with amino acid complexes and develop the potential applications of them, the silver nitrate and two types of amino acid (L-, D- and DL-) aspartic acid and (L- and D-) glutamic acid are used to generate chiral silver(I) coordination polymers. In this work, five coordination polymers, {[Ag3(D-Asp)2(NO3)]}n. nH2O (1), {[Ag3(L-Asp)2(NO3)]}n. nH2O (2), {[Ag4(DL-Asp)2(NO3)2]}n.2nH2O (3), {[Ag4(D-Glu)2(NO3)2]}n· 2nH2O (4) and {[Ag4(L-Glu)2(NO3)2]}n· 2nH2O (5) are synthesized under hydrothermal conditions. The X-Ray Diffraction and related software were used for measuring and analyzing the crystal structures. X-ray single crystal structure analysis shows that the complexes (1) and (2) are a pair of six-helix bundle with a helical pitch of 70.6 Å. The adjacent helices are connected by argentophilic Ag-Ag interactions to form sextuple. The D-Asp and L-Asp in complex (3) generate achiral layers. Moreover, the L-Glu ligands in complexes (4) and D-Glu ligands in (5) combine with Ag(I) ions, and both the two structures have no charity. However, complex (4) and (5) are a pair of 3D structural enantiomer. 2017-12 text Electronic Thesis http://hdl.handle.net/10150/626799 http://arizona.openrepository.com/arizona/handle/10150/626799 en_US Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. The University of Arizona. |
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Chiral assemblies of metal atoms linked by organic ligands are attracting considerable attention for their unique structural aesthetics and interesting properties. In order to explore the novel helical supramolecular of silver with amino acid complexes and develop the potential applications of them, the silver nitrate and two types of amino acid (L-, D- and DL-) aspartic acid and (L- and D-) glutamic acid are used to generate chiral silver(I) coordination polymers. In this work, five coordination polymers, {[Ag3(D-Asp)2(NO3)]}n. nH2O (1), {[Ag3(L-Asp)2(NO3)]}n. nH2O (2), {[Ag4(DL-Asp)2(NO3)2]}n.2nH2O (3), {[Ag4(D-Glu)2(NO3)2]}n· 2nH2O (4) and {[Ag4(L-Glu)2(NO3)2]}n· 2nH2O (5) are synthesized under hydrothermal conditions. The X-Ray Diffraction and related software were used for measuring and analyzing the crystal structures. X-ray single crystal structure analysis shows that the complexes (1) and (2) are a pair of six-helix bundle with a helical pitch of 70.6 Å. The adjacent helices are connected by argentophilic Ag-Ag interactions to form sextuple. The D-Asp and L-Asp in complex (3) generate achiral layers. Moreover, the L-Glu ligands in complexes (4) and D-Glu ligands in (5) combine with Ag(I) ions, and both the two structures have no charity. However, complex (4) and (5) are a pair of 3D structural enantiomer. |
author2 |
Zheng, Zhiping |
author_facet |
Zheng, Zhiping Zhang Yongtao Zhang Yongtao |
author |
Zhang Yongtao Zhang Yongtao |
spellingShingle |
Zhang Yongtao Zhang Yongtao Synthesis and structural characterization of silver (I)-(D-, L- and DL-) aspartate and silver (I)-(D- and L-) glutamate coordination polymers |
author_sort |
Zhang Yongtao |
title |
Synthesis and structural characterization of silver (I)-(D-, L- and DL-) aspartate and silver (I)-(D- and L-) glutamate coordination polymers |
title_short |
Synthesis and structural characterization of silver (I)-(D-, L- and DL-) aspartate and silver (I)-(D- and L-) glutamate coordination polymers |
title_full |
Synthesis and structural characterization of silver (I)-(D-, L- and DL-) aspartate and silver (I)-(D- and L-) glutamate coordination polymers |
title_fullStr |
Synthesis and structural characterization of silver (I)-(D-, L- and DL-) aspartate and silver (I)-(D- and L-) glutamate coordination polymers |
title_full_unstemmed |
Synthesis and structural characterization of silver (I)-(D-, L- and DL-) aspartate and silver (I)-(D- and L-) glutamate coordination polymers |
title_sort |
synthesis and structural characterization of silver (i)-(d-, l- and dl-) aspartate and silver (i)-(d- and l-) glutamate coordination polymers |
publisher |
The University of Arizona. |
publishDate |
2017 |
url |
http://hdl.handle.net/10150/626799 http://arizona.openrepository.com/arizona/handle/10150/626799 |
work_keys_str_mv |
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1718615129588760576 |