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: B1B95/daug-cc-pVDZ

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 B1B95/daug-cc-pVDZ
 hartrees
Energy at 0K-4161.241368
Energy at 298.15K 
HF Energy-4161.241368
Nuclear repulsion energy211.103577
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 B1B95/daug-cc-pVDZ
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 215 215 26.33 75.28 0.57 0.73

Unscaled Zero Point Vibrational Energy (zpe) 107.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 107.3 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 B1B95/daug-cc-pVDZ
B
0.07141

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/daug-cc-pVDZ

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
Ga12.5644
As22.5644

picture of Gallium arsenide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.208      
2 As -0.208      


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 -1.383 1.383
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.195 0.000 0.000
y 0.000 -33.195 0.000
z 0.000 0.000 -40.620
Traceless
 xyz
x 3.713 0.000 0.000
y 0.000 3.713 0.000
z 0.000 0.000 -7.426
Polar
3z2-r2-14.851
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 10.153 0.000 0.000
y 0.000 10.153 0.000
z 0.000 0.000 17.962


<r2> (average value of r2) Å2
<r2> 127.392
(<r2>)1/2 11.287

State 2 (1Σ)

Jump to S1C1
Energy calculated at B1B95/daug-cc-pVDZ
 hartrees
Energy at 0K-4161.199897
Energy at 298.15K 
HF Energy-4161.199897
Nuclear repulsion energy211.469098
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 B1B95/daug-cc-pVDZ
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 220 220 26.53 0.00 0.33 0.50

Unscaled Zero Point Vibrational Energy (zpe) 110.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 110.0 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 B1B95/daug-cc-pVDZ
B
0.07166

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/daug-cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 -1.320
As2 0.000 0.000 1.240

Atom - Atom Distances (Å)
  Ga1 As2
Ga12.5599
As22.5599

picture of Gallium arsenide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.149      
2 As -0.149      


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 -1.094 1.094
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.189 0.000 0.000
y 0.000 -29.320 0.000
z 0.000 0.000 -40.383
Traceless
 xyz
x -3.337 0.000 0.000
y 0.000 9.966 0.000
z 0.000 0.000 -6.628
Polar
3z2-r2-13.257
x2-y2-8.869
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.420 0.000 0.000
y 0.000 -37.878 0.000
z 0.000 0.000 18.396


<r2> (average value of r2) Å2
<r2> 127.213
(<r2>)1/2 11.279