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: HSEh1PBE/3-21G

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 HSEh1PBE/3-21G
 hartrees
Energy at 0K-4139.942039
Energy at 298.15K 
HF Energy-4139.942039
Nuclear repulsion energy205.789656
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 HSEh1PBE/3-21G
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 209 201 18.67 695.02 0.24 0.38

Unscaled Zero Point Vibrational Energy (zpe) 104.5 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 100.7 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 HSEh1PBE/3-21G
B
0.06786

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 -1.356
As2 0.000 0.000 1.274

Atom - Atom Distances (Å)
  Ga1 As2
Ga12.6306
As22.6306

picture of Gallium arsenide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.277      
2 As -0.277      


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 -1.488 1.488
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.294 0.000 0.000
y 0.000 -33.294 0.000
z 0.000 0.000 -43.329
Traceless
 xyz
x 5.017 0.000 0.000
y 0.000 5.017 0.000
z 0.000 0.000 -10.034
Polar
3z2-r2-20.068
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 9.480 0.000 0.000
y 0.000 9.480 0.000
z 0.000 0.000 16.586


<r2> (average value of r2) Å2
<r2> 133.496
(<r2>)1/2 11.554

State 2 (1Σ)

Jump to S1C1
Energy calculated at HSEh1PBE/3-21G
 hartrees
Energy at 0K-4139.897111
Energy at 298.15K 
HF Energy-4139.897111
Nuclear repulsion energy206.926465
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 HSEh1PBE/3-21G
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 217 209 18.20 25952.26 0.35 0.52

Unscaled Zero Point Vibrational Energy (zpe) 108.5 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 104.6 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 HSEh1PBE/3-21G
B
0.06861

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 -1.349
As2 0.000 0.000 1.267

Atom - Atom Distances (Å)
  Ga1 As2
Ga12.6161
As22.6161

picture of Gallium arsenide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.219      
2 As -0.219      


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 -0.870 0.870
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.202 0.000 0.000
y 0.000 -38.243 0.000
z 0.000 0.000 -42.963
Traceless
 xyz
x 11.400 0.000 0.000
y 0.000 -2.161 0.000
z 0.000 0.000 -9.240
Polar
3z2-r2-18.480
x2-y29.041
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x -8.049 0.000 0.000
y 0.000 6.224 0.000
z 0.000 0.000 17.088


<r2> (average value of r2) Å2
<r2> 132.386
(<r2>)1/2 11.506