pi electron

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pi electron

[′pī i′lek‚trän]
(physical chemistry)
An electron which participates in pi bonding.
References in periodicals archive ?
An interesting result in the docking poses presented by DS 2.5 (Figure 5) is that warfarin has a pi bond interaction with some of the twenty-one amino acids.
We noted that the pi bond in warfarin and in the CYP2C9 complex was not stable after making the comparisons between 5 ns, 7 ns, 14.5 ns, and 16 ns.
This double bond is formed by the overlap of the [sp.sup.2] orbitals of C and O, thus forming a sigma bond and pi bond; this result is confirmed by the angles between Si3-C3-O1 (120.6[degrees]), Si4-C3-O1 (118.6[degrees]), and Si3-C3-Si4 (119.8[degrees]), which are close to the ideal angle of sp hybridization (120[degrees]).