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: ROHF/aug-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 ROHF/aug-cc-pVDZ
 hartrees
Energy at 0K-4157.387759
Energy at 298.15K 
HF Energy-4157.387759
Nuclear repulsion energy209.172011
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 ROHF/aug-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 214 214 34.69      

Unscaled Zero Point Vibrational Energy (zpe) 107.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 107.2 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 ROHF/aug-cc-pVDZ
B
0.07011

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 -1.334
As2 0.000 0.000 1.254

Atom - Atom Distances (Å)
  Ga1 As2
Ga12.5881
As22.5881

picture of Gallium arsenide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.368      
2 As -0.368      


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 -1.628 1.628
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.807 0.000 0.000
y 0.000 -33.807 0.000
z 0.000 0.000 -42.984
Traceless
 xyz
x 4.589 0.000 0.000
y 0.000 4.589 0.000
z 0.000 0.000 -9.177
Polar
3z2-r2-18.355
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 130.089
(<r2>)1/2 11.406

State 2 (1Σ)

Jump to S1C1
Energy calculated at ROHF/aug-cc-pVDZ
 hartrees
Energy at 0K-4157.330026
Energy at 298.15K 
HF Energy-4157.330026
Nuclear repulsion energy209.977680
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 ROHF/aug-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 39.43      

Unscaled Zero Point Vibrational Energy (zpe) 110.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 110.2 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 ROHF/aug-cc-pVDZ
B
0.07065

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 -1.329
As2 0.000 0.000 1.249

Atom - Atom Distances (Å)
  Ga1 As2
Ga12.5781
As22.5781

picture of Gallium arsenide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ga 0.323      
2 As -0.323      


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 -1.387 1.387
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.183 0.000 0.000
y 0.000 -29.731 0.000
z 0.000 0.000 -42.761
Traceless
 xyz
x -2.936 0.000 0.000
y 0.000 11.241 0.000
z 0.000 0.000 -8.304
Polar
3z2-r2-16.609
x2-y2-9.451
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 129.494
(<r2>)1/2 11.380