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All results from a given calculation for Si2H6 (disilane)

using model chemistry: SVWN/cc-pV(T+d)Z

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at SVWN/cc-pV(T+d)Z
 hartrees
Energy at 0K-580.888948
Energy at 298.15K-580.894584
HF Energy-580.888948
Nuclear repulsion energy91.240697
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 SVWN/cc-pV(T+d)Z
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1g 2157 2157 0.00      
2 A1g 848 848 0.00      
3 A1g 433 433 0.00      
4 A1u 139 139 0.00      
5 A2u 2154 2154 71.63      
6 A2u 780 780 378.50      
7 Eg 2170 2170 0.00      
7 Eg 2170 2170 0.00      
8 Eg 887 887 0.00      
8 Eg 887 887 0.00      
9 Eg 594 594 0.00      
9 Eg 594 594 0.00      
10 Eu 2179 2179 112.84      
10 Eu 2179 2179 112.88      
11 Eu 900 900 56.07      
11 Eu 900 900 56.08      
12 Eu 337 337 13.36      
12 Eu 337 337 13.36      

Unscaled Zero Point Vibrational Energy (zpe) 10322.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10322.0 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 SVWN/cc-pV(T+d)Z
ABC
1.42342 0.17248 0.17248

See section I.F.4 to change rotational constant units
Geometric Data calculated at SVWN/cc-pV(T+d)Z

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 1.157
Si2 0.000 0.000 -1.157
H3 0.000 1.399 1.676
H4 -1.212 -0.700 1.676
H5 1.212 -0.700 1.676
H6 0.000 -1.399 -1.676
H7 -1.212 0.700 -1.676
H8 1.212 0.700 -1.676

Atom - Atom Distances (Å)
  Si1 Si2 H3 H4 H5 H6 H7 H8
Si12.31301.49261.49261.49263.15903.15903.1590
Si22.31303.15903.15903.15901.49261.49261.4926
H31.49263.15902.42402.42404.36623.63153.6315
H41.49263.15902.42402.42403.63153.63154.3662
H51.49263.15902.42402.42403.63154.36623.6315
H63.15901.49264.36623.63153.63152.42402.4240
H73.15901.49263.63153.63154.36622.42402.4240
H83.15901.49263.63154.36623.63152.42402.4240

picture of disilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Si1 Si2 H6 110.348 Si1 Si2 H7 110.348
Si1 Si2 H8 110.348 Si2 Si1 H3 110.348
Si2 Si1 H4 110.348 Si2 Si1 H5 110.348
H3 Si1 H4 108.581 H3 Si1 H5 108.581
H4 Si1 H5 108.581 H6 Si2 H7 108.581
H6 Si2 H8 108.581 H7 Si2 H8 108.581
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at SVWN/cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si -0.017      
2 Si -0.017      
3 H 0.006      
4 H 0.006      
5 H 0.006      
6 H 0.006      
7 H 0.006      
8 H 0.006      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.201 0.000 0.000
y 0.000 -31.201 0.000
z 0.000 0.000 -31.980
Traceless
 xyz
x 0.390 0.000 0.000
y 0.000 0.390 0.000
z 0.000 0.000 -0.780
Polar
3z2-r2-1.560
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 8.380 0.000 0.000
y 0.000 8.380 0.000
z 0.000 0.000 11.258


<r2> (average value of r2) Å2
<r2> 85.696
(<r2>)1/2 9.257