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All results from a given calculation for SiCl3CH3 (methyltrichlorosilane)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-55.068055
Energy at 298.15K-55.071163
HF Energy-55.068055
Nuclear repulsion energy78.792065
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HF/CEP-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3221 2903 8.47      
2 A1 1482 1336 21.51      
3 A1 759 684 46.30      
4 A1 406 366 29.24      
5 A1 212 191 29.68      
6 A2 161 145 0.00      
7 E 3336 3007 2.39      
7 E 3336 3007 2.39      
8 E 1573 1418 12.56      
8 E 1573 1418 12.56      
9 E 980 884 92.54      
9 E 980 884 92.54      
10 E 539 486 152.02      
10 E 539 486 152.03      
11 E 206 186 9.41      
11 E 206 186 9.41      
12 E 144 130 1.63      
12 E 144 130 1.63      

Unscaled Zero Point Vibrational Energy (zpe) 9898.6 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 8922.6 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.
Rotational Constants (cm-1) from geometry optimized at HF/CEP-31G
ABC
0.05287 0.05287 0.03918

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.297
C2 0.000 0.000 2.181
Cl3 0.000 2.018 -0.488
Cl4 1.747 -1.009 -0.488
Cl5 -1.747 -1.009 -0.488
H6 0.000 -1.022 2.552
H7 0.885 0.511 2.552
H8 -0.885 0.511 2.552

Atom - Atom Distances (Å)
  Si1 C2 Cl3 Cl4 Cl5 H6 H7 H8
Si11.88412.16522.16522.16522.47572.47572.4757
C21.88413.34613.34613.34611.08731.08731.0873
Cl32.16523.34613.49483.49484.29913.50653.5065
Cl42.16523.34613.49483.49483.50653.50654.2991
Cl52.16523.34613.49483.49483.50654.29913.5065
H62.47571.08734.29913.50653.50651.77031.7703
H72.47571.08733.50653.50654.29911.77031.7703
H82.47571.08733.50654.29913.50651.77031.7703

picture of methyltrichlorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 C2 H6 109.938 Si1 C2 H7 109.938
Si1 C2 H8 109.938 C2 Si1 Cl3 111.264
C2 Si1 Cl4 111.264 C2 Si1 Cl5 111.264
Cl3 Si1 Cl4 107.620 Cl3 Si1 Cl5 107.620
Cl4 Si1 Cl5 107.620 H6 C2 H7 109.000
H6 C2 H8 109.000 H7 C2 H8 109.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.666      
2 C -0.538      
3 Cl -0.241      
4 Cl -0.241      
5 Cl -0.241      
6 H 0.199      
7 H 0.199      
8 H 0.199      


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 4.045 4.045
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -63.072 0.000 0.000
y 0.000 -63.072 0.000
z 0.000 0.000 -53.068
Traceless
 xyz
x -5.002 0.000 0.000
y 0.000 -5.002 0.000
z 0.000 0.000 10.003
Polar
3z2-r220.007
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.864 0.000 0.000
y 0.000 8.864 0.000
z 0.000 0.000 6.593


<r2> (average value of r2) Å2
<r2> 169.864
(<r2>)1/2 13.033