Vibrational Frequencies calculated at B3PW91/6-31G*
| 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 |
3064 |
2931 |
4.35 |
|
|
|
| 2 |
A1 |
2239 |
2142 |
77.89 |
|
|
|
| 3 |
A1 |
1326 |
1269 |
17.82 |
|
|
|
| 4 |
A1 |
941 |
900 |
217.87 |
|
|
|
| 5 |
A1 |
697 |
667 |
7.75 |
|
|
|
| 6 |
A2 |
195 |
186 |
0.00 |
|
|
|
| 7 |
E |
3150 |
3013 |
7.83 |
|
|
|
| 7 |
E |
3150 |
3013 |
7.83 |
|
|
|
| 8 |
E |
2243 |
2146 |
184.12 |
|
|
|
| 8 |
E |
2243 |
2146 |
184.13 |
|
|
|
| 9 |
E |
1491 |
1427 |
4.40 |
|
|
|
| 9 |
E |
1491 |
1427 |
4.40 |
|
|
|
| 10 |
E |
955 |
914 |
40.79 |
|
|
|
| 10 |
E |
955 |
914 |
40.79 |
|
|
|
| 11 |
E |
901 |
862 |
74.14 |
|
|
|
| 11 |
E |
901 |
862 |
74.14 |
|
|
|
| 12 |
E |
519 |
497 |
8.26 |
|
|
|
| 12 |
E |
519 |
497 |
8.26 |
|
|
|
Unscaled Zero Point Vibrational Energy (zpe) 13489.4 cm
-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 12905.3 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 B3PW91/6-31G*
Charges (e)
| Number |
Element |
Mulliken |
CHELPG |
AIM |
ESP |
| 1 |
C |
-0.744 |
|
|
-0.496 |
| 2 |
Si |
0.379 |
|
|
0.663 |
| 3 |
H |
0.196 |
|
|
0.120 |
| 4 |
H |
0.196 |
|
|
0.121 |
| 5 |
H |
0.196 |
|
|
0.121 |
| 6 |
H |
-0.074 |
|
|
-0.177 |
| 7 |
H |
-0.074 |
|
|
-0.176 |
| 8 |
H |
-0.074 |
|
|
-0.176 |
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 |
-0.849 |
0.849 |
| CHELPG |
|
|
|
|
| AIM |
|
|
|
|
| ESP |
-0.002 |
-0.002 |
0.815 |
0.815 |
Electric Quadrupole moment
Quadrupole components in D Å
| Primitive |
| | x | y | z |
| x |
-22.660 |
0.000 |
0.000 |
| y |
0.000 |
-22.660 |
0.000 |
| z |
0.000 |
0.000 |
-22.731 |
|
| Traceless |
| | x | y | z |
| x |
0.035 |
0.000 |
0.000 |
| y |
0.000 |
0.035 |
0.000 |
| z |
0.000 |
0.000 |
-0.070 |
|
| Polar |
| 3z2-r2 | -0.141 |
| x2-y2 | 0.000 |
| 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 |
0.000 |
0.000 |
0.000 |
| y |
0.000 |
0.000 |
0.000 |
| z |
0.000 |
0.000 |
0.000 |
<r2> (average value of r
2) Å
2
| <r2> |
50.313 |
| (<r2>)1/2 |
7.093 |