Vibrational Frequencies calculated at MP2/3-21G
| 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 |
3087 |
2947 |
5.27 |
|
|
|
| 2 |
A1 |
2198 |
2098 |
62.88 |
|
|
|
| 3 |
A1 |
1412 |
1348 |
12.54 |
|
|
|
| 4 |
A1 |
949 |
905 |
272.99 |
|
|
|
| 5 |
A1 |
690 |
658 |
4.74 |
|
|
|
| 6 |
A2 |
186 |
177 |
0.00 |
|
|
|
| 7 |
E |
3169 |
3025 |
7.96 |
|
|
|
| 7 |
E |
3169 |
3025 |
7.96 |
|
|
|
| 8 |
E |
2199 |
2099 |
155.10 |
|
|
|
| 8 |
E |
2199 |
2099 |
155.10 |
|
|
|
| 9 |
E |
1566 |
1494 |
5.39 |
|
|
|
| 9 |
E |
1566 |
1494 |
5.39 |
|
|
|
| 10 |
E |
979 |
935 |
41.72 |
|
|
|
| 10 |
E |
979 |
935 |
41.72 |
|
|
|
| 11 |
E |
961 |
917 |
87.89 |
|
|
|
| 11 |
E |
961 |
917 |
87.89 |
|
|
|
| 12 |
E |
538 |
513 |
18.38 |
|
|
|
| 12 |
E |
538 |
513 |
18.38 |
|
|
|
Unscaled Zero Point Vibrational Energy (zpe) 13672.1 cm
-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 13050.0 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 MP2/3-21G
Charges (e)
| Number |
Element |
Mulliken |
CHELPG |
AIM |
ESP |
| 1 |
C |
-0.922 |
|
|
-0.658 |
| 2 |
Si |
0.808 |
|
|
0.955 |
| 3 |
H |
0.202 |
|
|
0.145 |
| 4 |
H |
0.202 |
|
|
0.145 |
| 5 |
H |
0.202 |
|
|
0.146 |
| 6 |
H |
-0.164 |
|
|
-0.245 |
| 7 |
H |
-0.164 |
|
|
-0.244 |
| 8 |
H |
-0.164 |
|
|
-0.244 |
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 |
-0.638 |
0.638 |
| CHELPG |
|
|
|
|
| AIM |
|
|
|
|
| ESP |
0.002 |
-0.003 |
-0.595 |
0.595 |
Electric Quadrupole moment
Quadrupole components in D Å
| Primitive |
| | x | y | z |
| x |
-24.117 |
0.000 |
0.000 |
| y |
0.000 |
-24.117 |
0.000 |
| z |
0.000 |
0.000 |
-24.259 |
|
| Traceless |
| | x | y | z |
| x |
0.071 |
0.000 |
0.000 |
| y |
0.000 |
0.071 |
0.000 |
| z |
0.000 |
0.000 |
-0.142 |
|
| Polar |
| 3z2-r2 | -0.284 |
| 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 |
4.503 |
0.000 |
0.000 |
| y |
0.000 |
4.503 |
0.000 |
| z |
0.000 |
0.000 |
5.059 |
<r2> (average value of r
2) Å
2
| <r2> |
52.403 |
| (<r2>)1/2 |
7.239 |