Main-group chemistry
a bonding scheme in which three atoms share four electrons over bonding and nonbonding orbitals, used to explain hypervalent molecules without d-orbitals.In main-group chemistry, three-center four-electron bond refers to a bonding scheme in which three atoms share four electrons over bonding and nonbonding orbitals, used to explain hypervalent molecules without d-orbitals. This meaning comes from Pimentel (1951) in The Journal of Chemical Physics.[1]
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