Carbon cage isomers and magnetic Dy⋯Dy interactions in Dy₂O@C₈₈ and Dy₂C₂@C₈₈ metallofullerenes

Abstract

Three isomers of Dy2O@C88 and two isomers of Dy2C2@C88 were synthesized and structurally characterized by single-crystal X-ray diffraction, vibrational spectroscopy, and DFT calculations. Both types of clusterfullerenes feature 4-fold electron...

Structure and single-molecule conductance of two endohedral metallofullerenes with large C88cage

“…After inspecting literature, a metal carbide metallofullerene Lu 2 C 2 @ D 2 (35)-C 88 28 and a dimetallofullerene Sm 2 @ D 2 (35)-C 88 , 29 both show almost identical features with Ce 2 O@C 88 . And taking comparison to the recently reported isomers of Dy 2 O@ D 2 (35)-C 88 and Dy 2 C 2 @ D 2 (35)-C 88 , 26 they also show similar absorption features with that of Ce 2 O@C 88 . These results demonstrated that Ce 2 O@C 88 adopts a D 2 (35)-C 88 cage.…”

“…These results indicate the structural similarity between Dy 2 O@C 88 and Ce 2 O@C 88 . 26 Other new types of metal oxide cluster fullerenes have also been reported recently, such as Ho 2 @C 2n (2n = 74, 92, 84), 12,30 Tb 2 O@C 74 , 31 and Lu 2 O@C 80 . 32 Unlike the variable cluster forms observed for Sc, such as Sc 2 O, Sc 2 O 3 , and Sc 4 O 2 , these newly reported molecules adopt an endohedral form identical to that of M 2 O.…”

“…21–25 Recently, Chen et al isolated several Dy 2 O@C 88 isomers with single-molecule magnet properties. 26 These results show that C 88 -based large metallofullerenes are potential materials owing to their relatively high yields and definite structures. However, their electronic properties have not been evaluated.…”

A quest for ideal electric field-driven MX@C70 endohedral fullerene memristors: which MX fits the best?

“…Furthermore, various endohedral fullerenes with the general formula of M 2 X@C n have also been prepared to date. [29][30][31][32] Although the large-scale synthesis of the MX@C 70 systems studied here seems to be inaccessible at the moment, molecular surgery methods come across as a step in the right direction. [33][34][35][36] Very recently, Gao et al 37 successfully performed insertion of LiF and [BeF] + into an open-cage C 60 fullerene.…”

“…Furthermore, various endohedral fullerenes with the general formula of M 2 X@C n have also been prepared to date. 29–32…”