Vibrational Frequencies calculated at B3PW91/6-311+G(3df,2p)
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' |
3938 |
3769 |
92.75 |
76.44 |
0.21 |
0.35 |
2 |
A' |
2256 |
2160 |
97.13 |
124.79 |
0.19 |
0.32 |
3 |
A' |
2209 |
2115 |
90.24 |
216.76 |
0.06 |
0.11 |
4 |
A' |
988 |
946 |
174.16 |
2.05 |
0.74 |
0.85 |
5 |
A' |
966 |
925 |
87.96 |
6.86 |
0.74 |
0.85 |
6 |
A' |
902 |
864 |
15.31 |
7.13 |
0.40 |
0.57 |
7 |
A' |
834 |
798 |
181.22 |
6.35 |
0.22 |
0.36 |
8 |
A' |
680 |
651 |
65.17 |
3.19 |
0.69 |
0.82 |
9 |
A" |
2205 |
2111 |
163.84 |
64.85 |
0.75 |
0.86 |
10 |
A" |
948 |
907 |
66.62 |
7.88 |
0.75 |
0.86 |
11 |
A" |
714 |
684 |
60.79 |
6.01 |
0.75 |
0.86 |
12 |
A" |
187 |
179 |
98.71 |
0.63 |
0.75 |
0.86 |
Unscaled Zero Point Vibrational Energy (zpe) 8413.3 cm
-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 8054.1 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 B3PW91/6-311+G(3df,2p)
Charges (e)
Number |
Element |
Mulliken |
CHELPG |
AIM |
ESP |
1 |
Si |
0.535 |
|
|
|
2 |
O |
-0.505 |
|
|
|
3 |
H |
-0.073 |
|
|
|
4 |
H |
-0.080 |
|
|
|
5 |
H |
-0.080 |
|
|
|
6 |
H |
0.202 |
|
|
|
Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section
VII.A.3)
|
x |
y |
z |
Total |
|
-1.296 |
0.075 |
0.000 |
1.298 |
CHELPG |
|
|
|
|
AIM |
|
|
|
|
ESP |
|
|
|
|
Electric Quadrupole moment
Quadrupole components in D Å
Primitive |
| x | y | z |
x |
-19.928 |
-2.928 |
0.000 |
y |
-2.928 |
-20.453 |
0.000 |
z |
0.000 |
0.000 |
-21.858 |
|
Traceless |
| x | y | z |
x |
1.228 |
-2.928 |
0.000 |
y |
-2.928 |
0.439 |
0.000 |
z |
0.000 |
0.000 |
-1.667 |
|
Polar |
3z2-r2 | -3.334 |
x2-y2 | 0.525 |
xy | -2.928 |
xz | 0.000 |
yz | 0.000 |
|
Polarizabilities
Components of the polarizability tensor.
Units are
Å
3 (Angstrom cubed)
Change units.
|
x |
y |
z |
x |
4.783 |
-0.023 |
0.000 |
y |
-0.023 |
4.869 |
0.000 |
z |
0.000 |
0.000 |
4.749 |
<r2> (average value of r
2) Å
2
<r2> |
39.167 |
(<r2>)1/2 |
6.258 |