Vibrational Frequencies calculated at mPW1PW91/3-21G
Mode Number |
Symmetry |
Frequency (cm-1) |
Scaled Frequency (cm-1) |
IR Intensities (km mol-1) |
Raman Act (Å4/u) |
Dep P |
Dep U |
1 |
A' |
3673 |
3506 |
38.02 |
126.61 |
0.30 |
0.47 |
2 |
A' |
2256 |
2154 |
118.93 |
106.67 |
0.24 |
0.39 |
3 |
A' |
2187 |
2088 |
129.74 |
163.11 |
0.09 |
0.16 |
4 |
A' |
1050 |
1002 |
181.24 |
17.84 |
0.67 |
0.80 |
5 |
A' |
956 |
912 |
98.94 |
14.93 |
0.72 |
0.84 |
6 |
A' |
928 |
886 |
61.22 |
40.73 |
0.75 |
0.86 |
7 |
A' |
793 |
757 |
153.14 |
8.83 |
0.11 |
0.20 |
8 |
A' |
726 |
693 |
100.37 |
7.18 |
0.74 |
0.85 |
9 |
A" |
2178 |
2079 |
220.96 |
68.09 |
0.75 |
0.86 |
10 |
A" |
898 |
857 |
79.36 |
39.29 |
0.75 |
0.86 |
11 |
A" |
733 |
700 |
98.26 |
14.09 |
0.75 |
0.86 |
12 |
A" |
278 |
265 |
156.53 |
3.93 |
0.75 |
0.86 |
Unscaled Zero Point Vibrational Energy (zpe) 8327.9 cm
-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 7949.8 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 mPW1PW91/3-21G
Charges (e)
Number |
Element |
Mulliken |
CHELPG |
AIM |
ESP |
1 |
Si |
0.788 |
|
|
|
2 |
O |
-0.714 |
|
|
|
3 |
H |
-0.133 |
|
|
|
4 |
H |
-0.162 |
|
|
|
5 |
H |
-0.162 |
|
|
|
6 |
H |
0.382 |
|
|
|
Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section
VII.A.3)
|
x |
y |
z |
Total |
|
-1.704 |
0.038 |
0.000 |
1.705 |
CHELPG |
|
|
|
|
AIM |
|
|
|
|
ESP |
|
|
|
|
Electric Quadrupole moment
Quadrupole components in D Å
Primitive |
| x | y | z |
x |
-20.312 |
-3.466 |
0.000 |
y |
-3.466 |
-20.593 |
0.000 |
z |
0.000 |
0.000 |
-22.188 |
|
Traceless |
| x | y | z |
x |
1.079 |
-3.466 |
0.000 |
y |
-3.466 |
0.657 |
0.000 |
z |
0.000 |
0.000 |
-1.736 |
|
Polar |
3z2-r2 | -3.471 |
x2-y2 | 0.281 |
xy | -3.466 |
xz | 0.000 |
yz | 0.000 |
|
Polarizabilities
Components of the polarizability tensor.
Units are
Å
3 (Angstrom cubed)
Change units.
|
x |
y |
z |
x |
3.485 |
-0.187 |
0.000 |
y |
-0.187 |
3.700 |
0.000 |
z |
0.000 |
0.000 |
3.162 |
<r2> (average value of r
2) Å
2
<r2> |
40.755 |
(<r2>)1/2 |
6.384 |