A Full-Metal Hollow Cage Cluster Nb12+ Niobespherene Resistant to CO Attack (IMAGE)
Caption
(Left) Typical mass spectra of the cationic niobium clusters produced by a homemade magnetron sputtering (MagS) source and collected by a customized triple quadrupole mass spectrometer (TQMS), and after reacting with different dose of reactants (3% CO in He). The inset shows the intensity of Nbn(CO)m+ (n=7-16, m=0-8) after Nbn+ clusters react with the CO reactant. (Right) A composition of the superatomic 1S and 1Pz orbitals, with 2S and 2Pz orbitals in Nb12+ contributed by s and d orbitals respectively. Also displayed, are the NICS-scan pertaining to cage aromaticity of the Nb12+ cluster, and the localized orbital locator (LOL) projected at the XY plane. The inserts are the stream traces of the induced ring current of Nb12+ when an external magnetic field is applied in the [0, 0, 1] direction.
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