Mei Qu, Fu-Qiang Zhang, Dian-Hui Wang, Huan Li,* Juan-Juan Hou, Xian-Ming Zhang.*
Observation of Non-FCC Copper in Alkynyl‐Protected Cu53 Nanoclusters，
(DOI:10.1002/anie.202001185, 2020, Angewandte Chemie International Edition)
张献明教授团队在 Angewandte Chemie International Edition 杂志上发表最新研究成果。
Abstract
The only feasible access to non‐face‐centered cubic (FCC) copper was by physical vapor deposition under high vacuum. Now, non‐FCC copper is observed in a series of alkynyl‐protected Cu53 nanoclusters (NCs) obtained from solution‐phase synthesis. Determined by single‐crystal X‐ray crystallography, the structures of Cu53(C≡CPhPh)9(dppp)6Cl3(NO3)9 and its two derivatives reveal an ABABC stacking sequence involving 41 Cu atoms. It can be regarded as a mixed FCC and HCP structure, which gives strong evidence that Cu can be arranged in non‐FCC lattice at ambient conditions when proper ligands are provided. Characterization methods including X‐ray absorption fine structure, XPS, ESI‐MS, UV/Vis, Auger spectroscopy, and DFT calculations were carried out. CuII was shown to successively coordinate with introduced ligands and changed to CuI after bonding with phosphine. The following addition of NaBH4 and the aging step further reduced it to the Cu53 NC.
全文链接：https://onlinelibrary.wiley.com/doi/10.1002/anie.202001185
