Vibrational Frequencies calculated at B3PW91/3-21G
| 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 |
3062 |
2943 |
4.97 |
|
|
|
| 2 |
A1 |
2174 |
2090 |
64.87 |
|
|
|
| 3 |
A1 |
1364 |
1311 |
20.03 |
|
|
|
| 4 |
A1 |
910 |
874 |
205.06 |
|
|
|
| 5 |
A1 |
695 |
668 |
4.19 |
|
|
|
| 6 |
A2 |
177 |
170 |
0.00 |
|
|
|
| 7 |
E |
3148 |
3026 |
6.19 |
|
|
|
| 7 |
E |
3148 |
3026 |
6.19 |
|
|
|
| 8 |
E |
2183 |
2099 |
149.36 |
|
|
|
| 8 |
E |
2183 |
2099 |
149.37 |
|
|
|
| 9 |
E |
1529 |
1470 |
8.15 |
|
|
|
| 9 |
E |
1529 |
1470 |
8.15 |
|
|
|
| 10 |
E |
952 |
915 |
1.66 |
|
|
|
| 10 |
E |
952 |
915 |
1.66 |
|
|
|
| 11 |
E |
928 |
892 |
105.92 |
|
|
|
| 11 |
E |
928 |
892 |
105.92 |
|
|
|
| 12 |
E |
529 |
509 |
12.19 |
|
|
|
| 12 |
E |
529 |
509 |
12.19 |
|
|
|
Unscaled Zero Point Vibrational Energy (zpe) 13459.3 cm
-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 12937.0 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 B3PW91/3-21G
Charges (e)
| Number |
Element |
Mulliken |
CHELPG |
AIM |
ESP |
| 1 |
C |
-0.992 |
|
|
|
| 2 |
Si |
0.630 |
|
|
|
| 3 |
H |
0.234 |
|
|
|
| 4 |
H |
0.234 |
|
|
|
| 5 |
H |
0.234 |
|
|
|
| 6 |
H |
-0.114 |
|
|
|
| 7 |
H |
-0.114 |
|
|
|
| 8 |
H |
-0.114 |
|
|
|
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 |
-0.744 |
0.744 |
| CHELPG |
|
|
|
|
| AIM |
|
|
|
|
| ESP |
|
|
|
|
Electric Quadrupole moment
Quadrupole components in D Å
| Primitive |
| | x | y | z |
| x |
-23.314 |
0.000 |
0.000 |
| y |
0.000 |
-23.314 |
0.000 |
| z |
0.000 |
0.000 |
-23.330 |
|
| Traceless |
| | x | y | z |
| x |
0.008 |
0.000 |
0.000 |
| y |
0.000 |
0.008 |
0.000 |
| z |
0.000 |
0.000 |
-0.016 |
|
| Polar |
| 3z2-r2 | -0.032 |
| 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> |
51.511 |
| (<r2>)1/2 |
7.177 |