Ca 2 B 18 —A Bicapped Double‐Ring Boron Tube Retaining a Toroidal B 18 Cluster Template

Key Points

• The aim is to design a new molecular structure using a boron tube that supports a toroidal cluster template.
• Synthesis of a bicapped double-ring boron tube
• Incorporation of a toroidal B18 cluster template
• Successfully created a boron tube structure with enhanced stability and potential for material applications.