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3 center 4 electrons bond By Malik Xufyan

Application of three-center-four-electron bonding for structural and stability predictions of main group hypervalent molecules: the fulfillment of octet shell rule - ScienceDirect

3 center 2 electron bond(3c-2e), 3 center 4 electron bond(3c-4e)

What is a 3c-4e bond? - Quora

Application of three-center-four-electron bonding for structural and stability predictions of main group hypervalent molecules: the fulfillment of octet shell rule - ScienceDirect

Three-center four-electron bond - Wikipedia

3c-4e (3 centered - 4 electron) bond

3c/4e σ̂-Type Long-Bonding: A Novel Transitional Motif toward the Metallic Delocalization Limit

3c-4e (3 centered - 4 electron) bond

Halogen-based hypervalent molecules feature a 3c–4e bonding