Wei Tao, Jin Fei, Guan Runnan, Huang Jing, Chen Muqing, Li Qunxiang, Yang Shangfeng
Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, 230026, China.
School of Materials and Chemical Engineering, Anhui Jianzhu University, Hefei, Anhui, 230601, China.
Angew Chem Int Ed Engl. 2018 Aug 6;57(32):10273-10277. doi: 10.1002/anie.201800630. Epub 2018 Mar 7.
Rare-earth metals have been mostly entrapped into fullerene cages to form endohedral clusterfullerenes, whereas non-Group-3 transition metals that can form clusterfullerenes are limited to titanium (Ti) and vanadium (V), and both are exclusively entrapped within an I -C cage. Non-Group-3 transition-metal-containing endohedral fullerenes based on a C cage with D symmetry, V Sc N@D -C (x=1, 2), have now been synthesized, which exhibit two variable cluster compositions. The molecular structure of VSc N@D -C was unambiguously determined by X-ray crystallography. According to a comparative study with the reported Ti- and V-containing clusterfullerenes based on a I -C cage and the analogous D -C -based metal nitride clusterfullerenes containing rare-earth metals only, the decisive role of the non-Group-3 transition metal on the formation of the corresponding D -C -based clusterfullerenes is unraveled.
稀土金属大多被包裹在富勒烯笼中形成内嵌簇富勒烯，而能够形成簇富勒烯的非3族过渡金属仅限于钛（Ti）和钒（V），且二者都仅被包裹在I -C笼内。基于具有D对称性的C笼的含非3族过渡金属的内嵌富勒烯V Sc N@D -C（x = 1, 2）现已合成，其呈现出两种可变的簇组成。VSc N@D -C的分子结构通过X射线晶体学得以明确确定。通过与已报道的基于I -C笼的含Ti和V的簇富勒烯以及仅含稀土金属的类似的基于D -C的金属氮化物簇富勒烯进行对比研究，揭示了非3族过渡金属在相应的基于D -C的簇富勒烯形成过程中的决定性作用。
