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: HF/TZVP

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 HF/TZVP
 hartrees
Energy at 0K-4157.445635
Energy at 298.15K 
HF Energy-4157.445635
Nuclear repulsion energy209.152621
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 HF/TZVP
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 211 192 28.24 176.08 0.43 0.60

Unscaled Zero Point Vibrational Energy (zpe) 105.6 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 95.9 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 HF/TZVP
B
0.07009

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 -1.335
As2 0.000 0.000 1.254

Atom - Atom Distances (Å)
  Ga1 As2
Ga12.5883
As22.5883

picture of Gallium arsenide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.321      
2 As -0.321      


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 -1.740 1.740
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.263 0.000 0.000
y 0.000 -33.263 0.000
z 0.000 0.000 -43.480
Traceless
 xyz
x 5.109 0.000 0.000
y 0.000 5.109 0.000
z 0.000 0.000 -10.218
Polar
3z2-r2-20.436
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 8.292 0.000 0.000
y 0.000 8.292 0.000
z 0.000 0.000 15.397


<r2> (average value of r2) Å2
<r2> 129.986
(<r2>)1/2 11.401

State 2 (1Σ)

Jump to S1C1
Energy calculated at HF/TZVP
 hartrees
Energy at 0K-4157.383150
Energy at 298.15K 
HF Energy-4157.383150
Nuclear repulsion energy210.909328
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 HF/TZVP
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 225 204 34.72 129.10 0.63 0.77

Unscaled Zero Point Vibrational Energy (zpe) 112.5 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 102.2 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 HF/TZVP
B
0.07128

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 -1.323
As2 0.000 0.000 1.243

Atom - Atom Distances (Å)
  Ga1 As2
Ga12.5667
As22.5667

picture of Gallium arsenide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.280      
2 As -0.280      


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 -1.324 1.324
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.194 0.000 0.000
y 0.000 -29.274 0.000
z 0.000 0.000 -43.080
Traceless
 xyz
x -2.017 0.000 0.000
y 0.000 11.363 0.000
z 0.000 0.000 -9.346
Polar
3z2-r2-18.692
x2-y2-8.920
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.722 0.000 0.000
y 0.000 9.257 0.000
z 0.000 0.000 15.693


<r2> (average value of r2) Å2
<r2> 128.323
(<r2>)1/2 11.328