Self‐Assembly of A Novel Ag48 Cluster Encapsulating an Unprecedented [Mo8O28]8− Anion Template

• Published in: Israel journal of chemistry Vol. 59; no. 3-4; pp. 280 - 285
• Main Authors: Wang, Zhi, Zhuo, Hong‐Yan, Hu, An‐Yi, Su, Hai‐Feng, Zhao, Quan‐Qin, Wang, Xing‐Po, Tung, Chen‐Ho, Sun, Di
• Format: Journal Article
• Language: English
• Published: Haifa Wiley Subscription Services, Inc 01.03.2019
• Subjects: Absorption; Charge transfer; Clusters; Cobalt; Cubes; High-nuclearity silver cluster; Ions; Ligands; Mass spectrometry; POMs template; Silver; solution behavior; X-ray diffraction
• ISSN: 0021-2148; 1869-5868
• DOI: 10.1002/ijch.201800148

A novel silver cluster (SD/Ag48a) co‐protected by p‐MePhS− and CF3COO− ligands with an in‐situ generated unprecedented [Mo8O28]8− template has been synthesized under solvothermal condition. Single‐crystal X‐ray diffraction (SCXRD) and electrospray mass spectrometry (ESI‐MS) were used to determine the atom‐precise structure and solution behavior, respectively. Interestingly, the rare [Mo8O28]8− ion observed in the center of SD/Ag48a consists of 8 edge‐shared {MoO6} octahedra or can be deemed as three {Mo4O4} cubes fused together by sharing faces. The UV‐Vis spetcrum exhibits that a high‐energy (HE) wide absorption centered at ca. 365 nm, which can be assinged to intraligand (IL) π→π* transition absorption, whereas the low‐energy (LE) shoulder peak centered at ca. 500 nm can be ascribed to ligand‐to‐metal‐charge‐transfer (LMCT, S 3p→Ag 5 s) transition.