Akutsu Minoru, Koyasu Kiichirou, Atobe Junko, Hosoya Natsuki, Miyajima Ken, Mitsui Masaaki, Nakajima Atsushi
J Phys Chem A. 2006 Nov 9;110(44):12073-6. doi: 10.1021/jp065161p.
The geometric and electronic structures of aluminum binary clusters, AlnX (X = Si and P), have been investigated, using mass spectrometry, anion photoelectron spectroscopy, photoionization spectroscopy, and theoretical calculations. Both experimental and theoretical results show that Al12Si has a high ionization energy and low electron affinity and Al12P has a low ionization energy, both with the icosahedral structure having a central Si or P atom, revealing that Al12Si and Al12P exhibit rare-gas-like and alkali superatoms, respectively. Experiments confirmed the possibility that the change in the total number of valence electrons on substitution could produce ionically bound binary superatom complexes, the binary cluster salts Al12P+ F- and Al12B- Cs+.
利用质谱、负离子光电子能谱、光电离光谱和理论计算，对铝二元团簇AlnX（X = Si和P）的几何结构和电子结构进行了研究。实验和理论结果均表明，Al12Si具有高电离能和低电子亲和能，Al12P具有低电离能，二者均为具有中心Si或P原子的二十面体结构，这表明Al12Si和Al12P分别表现出类稀有气体和碱金属超原子的性质。实验证实了取代时价电子总数的变化可能产生离子键合的二元超原子络合物，即二元团簇盐Al12P+F-和Al12B-Cs+的可能性。
