Larger the size of halide, lesser will be the effective overlap of orbitals of boron and halogen. Hence BI3 will be most acidic while BF3 be the least.
Larger the size of halide, lesser will be the effective overlap of orbitals of boron and halogen. Hence BI3 will be most acidic while BF3 be the least.
The Lewis acid is really the boron atom because that’s the electronegative atom in the molecule. Polarized bonds in which boron’s substituents are more electronegative than boron leave the boron with a partial positive charge, increasing its electronegativity. All your compounds are halides of boron. Which halogen substituent is the most electronegative? Look up aluminum halides while you’re at it.
The Lewis acid is really the boron atom because that’s the electronegative atom in the molecule. Polarized bonds in which boron’s substituents are more electronegative than boron leave the boron with a partial positive charge, increasing its electronegativity. All your compounds are halides of boron. Which halogen substituent is the most electronegative? Look up aluminum halides while you’re at it.
People will think of BF3 as strongest lewis acid, but BI3 is stongest due to back bonding.
People will think of BF3 as strongest lewis acid, but BI3 is stongest due to back bonding.
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Larger the size of halide, lesser will be the effective overlap of orbitals of boron and halogen. Hence BI3 will be most acidic while BF3 be the least.
Larger the size of halide, lesser will be the effective overlap of orbitals of boron and halogen. Hence BI3 will be most acidic while BF3 be the least.
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BI3>BBR3>BCl3>BF3, decreasing order of Lewis acid strength. This is due to decreasing order of extent of ppi-ppi back bonding.
BI3>BBR3>BCl3>BF3, decreasing order of Lewis acid strength. This is due to decreasing order of extent of ppi-ppi back bonding.
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The Lewis acid is really the boron atom because that’s the electronegative atom in the molecule. Polarized bonds in which boron’s substituents are more electronegative than boron leave the boron with a partial positive charge, increasing its electronegativity. All your compounds are halides of boron. Which halogen substituent is the most electronegative? Look up aluminum halides while you’re at it.
The Lewis acid is really the boron atom because that’s the electronegative atom in the molecule. Polarized bonds in which boron’s substituents are more electronegative than boron leave the boron with a partial positive charge, increasing its electronegativity. All your compounds are halides of boron. Which halogen substituent is the most electronegative? Look up aluminum halides while you’re at it.
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BI3 is the strongest lewis acid because the conjugate base of BI3 is most stable among all the other’s,so it's considered as strongest lewis acid.
BI3 is the strongest lewis acid because the conjugate base of BI3 is most stable among all the other’s,so it's considered as strongest lewis acid.
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