Different Silver Nanoparticles in One Crystal: Ag210 (i PrPhS)71 (Ph3 P)5 Cl and Ag211 (i PrPhS)71 (Ph3 P)6 Cl

• Published in: Angewandte Chemie International Edition Vol. 58; no. 1; pp. 195 - 199
• Main Authors: Liu, Jun-Yan, Alkan, Fahri, Wang, Zhi, Zhang, Zhen-Yi, Kurmoo, Mohamedally, Yan, Zier, Zhao, Quan-Qin, Aikens, Christine M, Tung, Chen-Ho, Sun, Di
• Format: Journal Article
• Language: English
• Published: 02.01.2019
• ISSN: 1521-3773
• DOI: 10.1002/anie.201810772

Two pure silver nanoparticles (Ag210 (i PrPhS)71 (Ph3 P)5 Cl and Ag211 (i PrPhS)71 (Ph3 P)6 Cl labeled as SD/Ag210 and SD/Ag211 (SD=SunDi), were found to co-crystallize in forming compound 1. Single-crystal X-ray diffraction (SCXRD) revealed that they differ by only one Ag(PPh3 ). Their four-shell nanoparticles consist of three pure Ag metal shells (Ag19 @Ag52 @Ag45 ) shielded by a silver-organic Ag89 (i PrPhS)71 Cl[Ag(Ph3 P)]n outermost shell. The number (n) of Ag(Ph3 P) is five for SD/Ag210 and six for SD/Ag211. The pseudo-fivefold symmetric Ag nanoparticles exhibit surface plasmon absorption similar to a true metallic state but at the nanoscale. This work exemplifies the important effects of phosphine in stabilizing large silver nanoparticles; and offers a platform to investigate the origin of differences in nanoscale metal materials, even differing by only one metal atom; it also sheds light on the regioselective binding of auxiliary Ph3 P on the surface of silver nanoparticles.