Chapter5 Bonding in Polyatomic Molecules
Chapter5 Bonding in Polyatomic Molecules
Chapter5 Bonding in Polyatomic Molecules
Orbital hybridization - sp
sp _ hybrid =
1 ( 2 s + 2 px ) 2
sp _ hybrid =
Hybrid orbitals generated by mixing the characters of atomic orbitals
1 ( 2 s 2 px ) 2
sp 2 _ hybrid =
1 2 2 s + 2 px 3 3
sp 2 _ hybrid =
1 1 1 2 s 2 px + 2 p y 3 6 2
sp 2 _ hybrid =
1 1 1 2 s 2 px 2 p y 3 6 2
sp3 hybrid orbitals one s and three p atomic orbitals mix to form a set of four orbitals with different directional properties
sp 3 _ hybrid = sp 3 _ hybrid =
1 2 s + 2 px + 2 p y + 2 p z 2 1 2 s + 2 p x 2 p y 2 p z 2
) )
sp 3 _ hybrid = sp 3 _ hybrid =
1 2 s 2 p x + 2 p y 2 p z 2 1 2 s 2 p x 2 p y 2 p z 2
) )
sp3d hybrid orbitals one s, three p, and one d atomic orbitals mix to form a set of five orbitals with different directional properties
[Ni(CN)5]3-
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C3 2 2 S3 3 S3 C3 3 S3 1 Unique, S32
The resulting wavefunction contributions from the S3 and S32 operations are 3 and 2, respectively.
1 S3 2 Unique, S3 1
3 h
2 S3 2
1 S3 2 2 3
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The presence of the resonance contributions account for the partial double bond character in BF3
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SF6
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Find number of unchanged radial 2p orbitals that are unchanged under each Oh symmetry operation. 1 C2 Note the C2 axis bisect the planes containing 4 p orbitals. The C2 axis contains no 2p orbitals.
4 6
C2
E 6
C3 0
C2 0
C4 2
C2 i S4 (C42) 2 0 0
S6 0
h 4
d 2
Use the reduction formula to find the resulting symmetries: a1g, t1u, eg Could derive the equations for the LGOs for the F6 fragment.
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(a1g ) =
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