return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for GaAs (Gallium arsenide)

using model chemistry: ROHF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 3Π
2 1 yes C*V 1Σ

State 1 (3Π)

Jump to S2C1
Energy calculated at ROHF/Def2TZVPP
 hartrees
Energy at 0K-4157.444810
Energy at 298.15K 
HF Energy-4157.444810
Nuclear repulsion energy209.878565
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 ROHF/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 218 218 30.95      

Unscaled Zero Point Vibrational Energy (zpe) 108.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 108.8 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 ROHF/Def2TZVPP
B
0.07058

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/Def2TZVPP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 -1.330
As2 0.000 0.000 1.249

Atom - Atom Distances (Å)
  Ga1 As2
Ga12.5793
As22.5793

picture of Gallium arsenide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.361      
2 As -0.361      


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 -1.506 1.506
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.395 0.000 0.000
y 0.000 -33.395 0.000
z 0.000 0.000 -42.635
Traceless
 xyz
x 4.620 0.000 0.000
y 0.000 4.620 0.000
z 0.000 0.000 -9.239
Polar
3z2-r2-18.479
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 129.125
(<r2>)1/2 11.363

State 2 (1Σ)

Jump to S1C1
Energy calculated at ROHF/Def2TZVPP
 hartrees
Energy at 0K-4157.387853
Energy at 298.15K 
HF Energy-4157.387853
Nuclear repulsion energy211.127644
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 ROHF/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 226 226 34.17      

Unscaled Zero Point Vibrational Energy (zpe) 113.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 113.0 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 ROHF/Def2TZVPP
B
0.07142

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/Def2TZVPP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 -1.322
As2 0.000 0.000 1.242

Atom - Atom Distances (Å)
  Ga1 As2
Ga12.5641
As22.5641

picture of Gallium arsenide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.304      
2 As -0.304      


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 -1.161 1.161
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.416 0.000 0.000
y 0.000 -38.133 0.000
z 0.000 0.000 -42.444
Traceless
 xyz
x 10.873 0.000 0.000
y 0.000 -2.203 0.000
z 0.000 0.000 -8.670
Polar
3z2-r2-17.341
x2-y28.717
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 127.989
(<r2>)1/2 11.313