TY - JOUR
T1 - Rare Silver-Histidine Cluster Complex and Its Single-Crystal-to-Single-Crystal Phase-Transition Behavior
AU - Liu, Qingxin
AU - Wu, Yinglan
AU - Feng, Min
AU - Chen, Wanmin
AU - Zheng, Zhiping
AU - Feng, Min
N1 - Funding Information:
This work was financially supported by the National Natural Science Foundation of China (Grant No. 21971106), the Shenzhen Nobel Prize Scientists Laboratory Project (Grant No. C17783101), the Stable Support Project of Key Research Plan of Shenzhen , startup fund from SUSTech (Grant Nos. Y01216127, Y01216227), Shenzhen Postdoctoral Research Fund (Grant Nos. K21217521, K21217512), the Stable Support Plan Program of Shenzhen Natural Science Fund (Grant No. 20200925161141006), and Guangdong Basic and Applied Basic Research Foundation (Grant No. 2021A1515110855).
Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.
PY - 2022/3/8
Y1 - 2022/3/8
N2 - Silver complexes with proteinogenic amino acid ligands are of interest for biomedical and antimicrobial applications. In this work, we obtained {[Ag7(l-his)4](NO3)3·3H2O}0.2{[Ag8(l-his)4(H2O)2](NO3)4·3H2O}0.8(1) and {[Ag7(d-his)4](NO3)3·3H2O}0.2{[Ag8(d-his)4(H2O)2](NO3)4·3H2O}0.8(2), which represent the first example of any Ag-exclusive complex featuring a cluster-type core motif and with only proteinogenic amino acid ligands. Upon immersion into acetonitrile, an interesting single-crystal-to-single-crystal transformation occurred to produce a new cluster complex of the formula [Ag8(l-his)4(NO3)(H2O)](NO3)3(3). Using a racemic mixture of histidine, the reaction under otherwise identical conditions led to the production of the second example of a three-dimensional (3D) network structured Ag-exclusive complex with only a proteinogenic amino acid ligand. Compared with other Ag-histidine complexes in the literature, the significance of reaction conditions, particularly the Ag/histidine ratio and pH of the reaction mixture, is revealed. Temperature-dependent emission of 1 and 2 at 440 nm characteristic of silver-philophilic interactions was also observed.
AB - Silver complexes with proteinogenic amino acid ligands are of interest for biomedical and antimicrobial applications. In this work, we obtained {[Ag7(l-his)4](NO3)3·3H2O}0.2{[Ag8(l-his)4(H2O)2](NO3)4·3H2O}0.8(1) and {[Ag7(d-his)4](NO3)3·3H2O}0.2{[Ag8(d-his)4(H2O)2](NO3)4·3H2O}0.8(2), which represent the first example of any Ag-exclusive complex featuring a cluster-type core motif and with only proteinogenic amino acid ligands. Upon immersion into acetonitrile, an interesting single-crystal-to-single-crystal transformation occurred to produce a new cluster complex of the formula [Ag8(l-his)4(NO3)(H2O)](NO3)3(3). Using a racemic mixture of histidine, the reaction under otherwise identical conditions led to the production of the second example of a three-dimensional (3D) network structured Ag-exclusive complex with only a proteinogenic amino acid ligand. Compared with other Ag-histidine complexes in the literature, the significance of reaction conditions, particularly the Ag/histidine ratio and pH of the reaction mixture, is revealed. Temperature-dependent emission of 1 and 2 at 440 nm characteristic of silver-philophilic interactions was also observed.
UR - http://www.scopus.com/inward/record.url?scp=85125663545&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85125663545&partnerID=8YFLogxK
U2 - 10.1021/acsomega.2c00094
DO - 10.1021/acsomega.2c00094
M3 - Article
AN - SCOPUS:85125663545
VL - 7
SP - 8141
EP - 8149
JO - ACS Omega
JF - ACS Omega
SN - 2470-1343
IS - 9
ER -