Vibrational Frequencies calculated at mPW1PW91/6-31G(2df,p)
| Mode Number |
Symmetry |
Frequency (cm-1) |
Scaled Frequency (cm-1) |
IR Intensities (km mol-1) |
Raman Act (Å4/u) |
Dep P |
Dep U |
| 1 |
A1 |
1836 |
1753 |
23.07 |
26.07 |
0.05 |
0.10 |
| 2 |
A1 |
822 |
785 |
137.84 |
30.05 |
0.29 |
0.45 |
| 3 |
B2 |
175 |
167 |
85.93 |
9.90 |
0.75 |
0.86 |
Unscaled Zero Point Vibrational Energy (zpe) 1416.4 cm
-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 1352.3 cm
-1
See section
III.C.1 List or set vibrational scaling factors
to change the scale factors used here.
See section
III.C.2
Calculate a vibrational scaling factor for a given set of molecules
to determine the least squares best scaling factor.
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p)
Charges (e)
| Number |
Element |
Mulliken |
CHELPG |
AIM |
ESP |
| 1 |
Si |
0.147 |
|
|
|
| 2 |
C |
-0.073 |
|
|
|
| 3 |
C |
-0.073 |
|
|
|
Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section
VII.A.3)
| |
x |
y |
z |
Total |
| |
0.000 |
0.000 |
1.970 |
1.970 |
| CHELPG |
|
|
|
|
| AIM |
|
|
|
|
| ESP |
|
|
|
|
Electric Quadrupole moment
Quadrupole components in D Å
| Primitive |
| | x | y | z |
| x |
-22.466 |
0.000 |
0.000 |
| y |
0.000 |
-25.488 |
0.000 |
| z |
0.000 |
0.000 |
-24.777 |
|
| Traceless |
| | x | y | z |
| x |
2.666 |
0.000 |
0.000 |
| y |
0.000 |
-1.866 |
0.000 |
| z |
0.000 |
0.000 |
-0.799 |
|
| Polar |
| 3z2-r2 | -1.599 |
| x2-y2 | 3.021 |
| xy | 0.000 |
| xz | 0.000 |
| yz | 0.000 |
|
Polarizabilities
Components of the polarizability tensor.
Units are
Å
3 (Angstrom cubed)
Change units.
| |
x |
y |
z |
| x |
4.434 |
0.000 |
0.000 |
| y |
0.000 |
5.838 |
0.000 |
| z |
0.000 |
0.000 |
6.812 |
<r2> (average value of r
2) Å
2
| <r2> |
39.144 |
| (<r2>)1/2 |
6.256 |