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: B2PLYP/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 B2PLYP/Def2TZVPP
 hartrees
Energy at 0K-4159.953873
Energy at 298.15K 
HF Energy-4159.818834
Nuclear repulsion energy211.326414
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 B2PLYP/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 216 216 23.01 74.88 0.56 0.72

Unscaled Zero Point Vibrational Energy (zpe) 108.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 108.2 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 B2PLYP/Def2TZVPP
B
0.07156

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/Def2TZVPP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 -1.321
As2 0.000 0.000 1.241

Atom - Atom Distances (Å)
  Ga1 As2
Ga12.5617
As22.5617

picture of Gallium arsenide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.275      
2 As -0.275      


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 -1.284 1.284
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.111 0.000 0.000
y 0.000 -33.111 0.000
z 0.000 0.000 -40.663
Traceless
 xyz
x 3.776 0.000 0.000
y 0.000 3.776 0.000
z 0.000 0.000 -7.552
Polar
3z2-r2-15.103
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 8.490 0.000 0.000
y 0.000 8.490 0.000
z 0.000 0.000 15.868


<r2> (average value of r2) Å2
<r2> 127.138
(<r2>)1/2 11.276

State 2 (1Σ)

Jump to S1C1
Energy calculated at B2PLYP/Def2TZVPP
 hartrees
Energy at 0K-4159.913133
Energy at 298.15K 
HF Energy-4159.772128
Nuclear repulsion energy212.116883
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 B2PLYP/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 223 223 21.94 19536.10 0.36 0.53

Unscaled Zero Point Vibrational Energy (zpe) 111.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 111.6 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 B2PLYP/Def2TZVPP
B
0.07210

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/Def2TZVPP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 -1.316
As2 0.000 0.000 1.236

Atom - Atom Distances (Å)
  Ga1 As2
Ga12.5521
As22.5521

picture of Gallium arsenide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.213      
2 As -0.213      


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 -0.856 0.856
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.364 0.000 0.000
y 0.000 -37.646 0.000
z 0.000 0.000 -40.435
Traceless
 xyz
x 9.676 0.000 0.000
y 0.000 -2.746 0.000
z 0.000 0.000 -6.930
Polar
3z2-r2-13.861
x2-y28.281
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 16.878 0.000 0.000
y 0.000 7.816 0.000
z 0.000 0.000 16.385


<r2> (average value of r2) Å2
<r2> 126.474
(<r2>)1/2 11.246