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All results from a given calculation for CH2SiH2 (silaethylene)

using model chemistry: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-329.715873
Energy at 298.15K-329.719011
HF Energy-329.715873
Nuclear repulsion energy51.037548
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 PBEPBE/6-31G(2df,p)
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 3100 3068 0.00      
2 A1 2192 2170 24.34      
3 A1 1339 1325 4.54      
4 A1 966 956 11.46      
5 A1 898 888 26.84      
6 A2 715 708 0.00      
7 B1 744 736 36.78      
8 B1 402 397 12.48      
9 B2 3195 3162 0.00      
10 B2 2218 2195 72.52      
11 B2 799 791 57.00      
12 B2 452 448 3.09      

Unscaled Zero Point Vibrational Energy (zpe) 8510.0 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 8422.3 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 PBEPBE/6-31G(2df,p)
ABC
3.43877 0.48762 0.42706

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.161
Si2 0.000 0.000 0.554
H3 0.000 0.924 -1.744
H4 0.000 -0.924 -1.744
H5 0.000 1.256 1.354
H6 0.000 -1.256 1.354

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6
C11.71491.09241.09242.81162.8116
Si21.71492.47652.47651.48971.4897
H31.09242.47651.84783.11593.7884
H41.09242.47651.84783.78843.1159
H52.81161.48973.11593.78842.5128
H62.81161.48973.78843.11592.5128

picture of silaethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 Si2 H5 122.498 C1 Si2 H6 122.498
Si2 C1 H3 122.245 Si2 C1 H4 122.245
H3 C1 H4 115.510 H5 Si2 H6 115.004
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.348      
2 Si -0.059      
3 H 0.145      
4 H 0.145      
5 H 0.058      
6 H 0.058      


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 0.283 0.283
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.673 0.000 0.000
y 0.000 -20.127 0.000
z 0.000 0.000 -19.556
Traceless
 xyz
x -2.832 0.000 0.000
y 0.000 0.988 0.000
z 0.000 0.000 1.844
Polar
3z2-r23.688
x2-y2-2.546
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.491 0.000 0.000
y 0.000 4.974 0.000
z 0.000 0.000 7.806


<r2> (average value of r2) Å2
<r2> 39.979
(<r2>)1/2 6.323