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: BLYP/6-31G**

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 BLYP/6-31G**
 hartrees
Energy at 0K-4156.699475
Energy at 298.15K 
HF Energy-4156.699475
Nuclear repulsion energy210.993612
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 BLYP/6-31G**
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 205 203 18.79 4815.06 0.16 0.27

Unscaled Zero Point Vibrational Energy (zpe) 102.2 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 101.5 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 BLYP/6-31G**
B
0.07133

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G**

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
Ga12.5657
As22.5657

picture of Gallium arsenide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.091      
2 As -0.091      


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 -0.779 0.779
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.019 0.000 0.000
y 0.000 -33.019 0.000
z 0.000 0.000 -40.455
Traceless
 xyz
x 3.718 0.000 0.000
y 0.000 3.718 0.000
z 0.000 0.000 -7.436
Polar
3z2-r2-14.871
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 10.433 0.000 0.000
y 0.000 10.433 0.000
z 0.000 0.000 16.172


<r2> (average value of r2) Å2
<r2> 127.394
(<r2>)1/2 11.287

State 2 (1Σ)

Jump to S1C1
Energy calculated at BLYP/6-31G**
 hartrees
Energy at 0K-4156.660547
Energy at 298.15K 
HF Energy-4156.660547
Nuclear repulsion energy211.295919
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 BLYP/6-31G**
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 210 208 16.76 59.66 0.73 0.84

Unscaled Zero Point Vibrational Energy (zpe) 104.8 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 103.9 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 BLYP/6-31G**
B
0.07154

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G**

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
Ga12.5620
As22.5620

picture of Gallium arsenide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.039      
2 As -0.039      


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 -0.331 0.331
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.528 0.000 0.000
y 0.000 -29.235 0.000
z 0.000 0.000 -40.126
Traceless
 xyz
x -2.848 0.000 0.000
y 0.000 9.593 0.000
z 0.000 0.000 -6.745
Polar
3z2-r2-13.490
x2-y2-8.294
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.433 0.000 0.000
y 0.000 10.433 0.000
z 0.000 0.000 16.172


<r2> (average value of r2) Å2
<r2> 127.176
(<r2>)1/2 11.277