Researchers isolated a previously missing carbon cage made of seventy-two atoms, without inserting a metal or attaching exterior groups. Structural measurements confirmed a flattened, sixfold-symmetric molecule. The peer-reviewed laboratory study examines why this form survives and how its electrical conductance changes with contact geometry, without establishing a practical electronic device.
A peer-reviewed chemistry study reports pristine isolation of a carbon cage containing seventy-two atoms. The molecule belongs to the fullerene family of closed carbon structures, but this particular form had remained missing from isolated samples. It was separated without a metal inside the cage or added chemical groups on its surface, allowing measurements of the unmodified carbon framework itself.[1]
Crystal diffraction and carbon nuclear magnetic resonance measurements confirmed a flattened cage with sixfold symmetry. Its pentagons do not share edges, satisfying the isolated pentagon rule. Calculated energy alone did not explain why this form survived when other lower-energy forms were not captured. The authors instead examined resistance to surface addition reactions. That argument concerns chemical survival alongside energy, rather than claiming that every predicted cage is equally accessible experimentally.[1]
In a single-molecule junction between gold electrodes, stretching the contact changed the measured electrical conductance markedly. Calculations tied the difference to how the cage connected to the electrodes. The result demonstrates a geometry-sensitive laboratory junction, not a finished electronic component. Practical production, operating lifetime and performance in an integrated device remain outside what these isolation and contact measurements establish.[1]
