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

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

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

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

Exploring the role of the 3-center–4-electron bond in hypervalent λ 3 -iodanes using the methodology of domain averaged Fermi holes - Physical Chemistry Chemical Physics (RSC Publishing) DOI:10.1039/C5CP05343A

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

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

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

The bonding picture in hypervalent XF3 (X = Cl, Br, I, At) fluorides revisited with quantum chemical topology - Amaouch - 2017 - Journal of Computational Chemistry - Wiley Online Library

3 center 4 electrons bond By Malik Xufyan

Three-center four-electron bond - Wikipedia

Exploring the role of the 3-center–4-electron bond in hypervalent λ 3 -iodanes using the methodology of domain averaged Fermi holes - Physical Chemistry Chemical Physics (RSC Publishing) DOI:10.1039/C5CP05343A

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

3 center 4 electrons bond By Malik Xufyan

3 center 4 electrons bond By Malik Xufyan