Figure 4: Molecular orbital analysis.
From: A monotopic aluminum telluride with an Al=Te double bond stabilized by N-heterocyclic carbenes

Optimized structure and selected molecular orbitals of 3, the LUMO, HOMO and HOMO–1 ((a–d) stick models). Te, yellow; Al, pink; N, blue; C, grey. Hydrogen atoms have been omitted for clarity.