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All results from a given calculation for CH2SiH2 (silaethylene)

using model chemistry: B3LYPultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYPultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-329.992845
Energy at 298.15K-329.996123
HF Energy-329.992845
Nuclear repulsion energy51.392865
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 B3LYPultrafine/aug-cc-pVTZ
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 3148 3046 0.36      
2 A1 2263 2189 32.54      
3 A1 1399 1353 8.67      
4 A1 993 961 24.15      
5 A1 933 903 25.30      
6 A2 730 707 0.00      
7 B1 781 756 44.33      
8 B1 464 449 18.62      
9 B2 3232 3126 0.01      
10 B2 2285 2210 81.76      
11 B2 832 805 57.78      
12 B2 482 466 8.57      

Unscaled Zero Point Vibrational Energy (zpe) 8770.4 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 8485.4 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 B3LYPultrafine/aug-cc-pVTZ
ABC
3.51652 0.49291 0.43231

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.156
Si2 0.000 0.000 0.550
H3 0.000 0.913 -1.735
H4 0.000 -0.913 -1.735
H5 0.000 1.240 1.350
H6 0.000 -1.240 1.350

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6
C11.70581.08151.08152.79572.7957
Si21.70582.46072.46071.47581.4758
H31.08152.46071.82683.10183.7621
H41.08152.46071.82683.76213.1018
H52.79571.47583.10183.76212.4809
H62.79571.47583.76213.10182.4809

picture of silaethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 Si2 H5 122.807 C1 Si2 H6 122.807
Si2 C1 H3 122.372 Si2 C1 H4 122.372
H3 C1 H4 115.257 H5 Si2 H6 114.386
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.930      
2 Si 0.479      
3 H 0.339      
4 H 0.339      
5 H -0.113      
6 H -0.113      


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 0.777 0.777
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.104 0.000 0.000
y 0.000 -20.820 0.000
z 0.000 0.000 -20.566
Traceless
 xyz
x -2.412 0.000 0.000
y 0.000 1.015 0.000
z 0.000 0.000 1.396
Polar
3z2-r22.793
x2-y2-2.285
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.329 0.000 0.000
y 0.000 6.152 0.000
z 0.000 0.000 9.129


<r2> (average value of r2) Å2
<r2> 40.070
(<r2>)1/2 6.330