Vibrational Frequencies calculated at mPW1PW91/6-31G*
| 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 |
3082 |
2923 |
3.96 |
|
|
|
| 2 |
A1 |
2254 |
2138 |
77.06 |
|
|
|
| 3 |
A1 |
1334 |
1265 |
19.05 |
|
|
|
| 4 |
A1 |
945 |
896 |
219.47 |
|
|
|
| 5 |
A1 |
703 |
667 |
7.61 |
|
|
|
| 6 |
A2 |
195 |
185 |
0.00 |
|
|
|
| 7 |
E |
3170 |
3006 |
7.02 |
|
|
|
| 7 |
E |
3170 |
3006 |
7.02 |
|
|
|
| 8 |
E |
2258 |
2141 |
183.45 |
|
|
|
| 8 |
E |
2258 |
2141 |
183.47 |
|
|
|
| 9 |
E |
1499 |
1421 |
4.65 |
|
|
|
| 9 |
E |
1499 |
1421 |
4.65 |
|
|
|
| 10 |
E |
959 |
910 |
41.10 |
|
|
|
| 10 |
E |
959 |
910 |
41.10 |
|
|
|
| 11 |
E |
905 |
858 |
75.60 |
|
|
|
| 11 |
E |
905 |
858 |
75.59 |
|
|
|
| 12 |
E |
521 |
494 |
8.45 |
|
|
|
| 12 |
E |
521 |
494 |
8.45 |
|
|
|
Unscaled Zero Point Vibrational Energy (zpe) 13567.6 cm
-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 12866.1 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*
Charges (e)
| Number |
Element |
Mulliken |
CHELPG |
AIM |
ESP |
| 1 |
C |
-0.758 |
|
|
|
| 2 |
Si |
0.378 |
|
|
|
| 3 |
H |
0.199 |
|
|
|
| 4 |
H |
0.199 |
|
|
|
| 5 |
H |
0.199 |
|
|
|
| 6 |
H |
-0.073 |
|
|
|
| 7 |
H |
-0.073 |
|
|
|
| 8 |
H |
-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 |
-0.841 |
0.841 |
| CHELPG |
|
|
|
|
| AIM |
|
|
|
|
| ESP |
|
|
|
|
Electric Quadrupole moment
Quadrupole components in D Å
| Primitive |
| | x | y | z |
| x |
-22.658 |
0.000 |
0.000 |
| y |
0.000 |
-22.658 |
0.000 |
| z |
0.000 |
0.000 |
-22.735 |
|
| Traceless |
| | x | y | z |
| x |
0.038 |
0.000 |
0.000 |
| y |
0.000 |
0.038 |
0.000 |
| z |
0.000 |
0.000 |
-0.076 |
|
| Polar |
| 3z2-r2 | -0.153 |
| 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> |
50.202 |
| (<r2>)1/2 |
7.085 |