What is bent rule? Please explain
What is bent rule? Please explain
Bent's Rule describes and explains the relationship between the orbital hybridisations of central atoms in molecules and the electro-negativities of substituents. The rule was stated by Henry Bent as follows:
"Atomic s character concentrates in orbitals directed toward electro-positive substituents". For example - molecular geometry can be explained and predicted by changing the substituent group. In the molecule Me2XCl2, (X=main group elements C, Si, Ge, Sn, Pb), the bond angle Cl-X-Cl is smaller than C-X-C bond angle. With the highly electronegative halogen substituent, Cl, more p character is concentrated on the central atom in X-Cl than X-C bonds.
We know that the s- orbital is closer to the nucleus and so as the s-character in a hybrid orbital increase, its electronegativity increases too.
Bent's Rule describes and explains the relationship between the orbital hybridisations of central atoms in molecules and the electro-negativities of substituents. The rule was stated by Henry Bent as follows:
"Atomic s character concentrates in orbitals directed toward electro-positive substituents". For example - molecular geometry can be explained and predicted by changing the substituent group. In the molecule Me2XCl2, (X=main group elements C, Si, Ge, Sn, Pb), the bond angle Cl-X-Cl is smaller than C-X-C bond angle. With the highly electronegative halogen substituent, Cl, more p character is concentrated on the central atom in X-Cl than X-C bonds.
We know that the s- orbital is closer to the nucleus and so as the s-character in a hybrid orbital increase, its electronegativity increases too.
