标题:[Au-18(dppm)(6)Cl-4](4+): a phosphine-protected gold nanocluster with rich charge states
作者:Zhang, Shan-Shan; Senanayake, Ravithree D.; Zhao, Quan-Qin; Su, Hai-Feng; Aikens, Christine M.; Wang, Xing-Po; Tung, Chen-Ho; Sun, Di; 更多
作者机构:[Zhang, Shan-Shan; Zhao, Quan-Qin; Wang, Xing-Po; Tung, Chen-Ho; Sun, Di] Shandong Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Colloid & Interfac 更多
通讯作者:Su, HaiFeng;Wang, XP;Sun, D;Wang, XP;Sun, D;Aikens, CM;Su, HF;Sun, D;Su, HF;Sun, D
通讯作者地址:[Wang, XP; Sun, D]Shandong Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Shandong, Peoples R China;[Wang, X 更多
来源:DALTON TRANSACTIONS
出版年:2019
卷:48
期:11
页码:3635-3640
DOI:10.1039/c9dt00042a
摘要:A diphosphine-protected 18-gold-atom nanocluster was isolated via a facile reduction of an Au-I precursor by NaBH4. Its composition was identified as {[Au-18(dppm)(6)Cl-4](4+)center dot C6H6 center dot 3Cl center dot PF6} (SD/Au18, SD = SunDi; dppm = bis-(diphenylphosphino) methane) by X-ray single crystal structural analysis. This nanocluster possesses a prolate shape and is built from an Au-10 kernel (bi-octahedral Au-6 units sharing one edge) fused with two Au-7 caps via sharing six gold atoms. The identity of the Au-18 cluster is further demonstrated by ESI-MS. The number of valence electrons of [Au-18(dppm)(6)Cl-4](4+) is 10 (n* = 18-4-4), which does not match with the known magic numbers according to the spherical jellium model, and elongated models must be considered. The special stability of the Au-18 cluster likely arises from geometrical factors in the metallic core. Two charge states are reported for this system. This work not only presents the structure elucidation of a diphosphine-protected Au-18 nanocluster, but also provides an important insight into the growth pattern of gold nanoclusters and the charge states they can achieve.
收录类别:EI;SCOPUS;SCIE
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062854806&doi=10.1039%2fc9dt00042a&partnerID=40&md5=bb45a0bcc9fabb1c5aec4148eb9e8e38
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