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All results from a given calculation for GaAs (Gallium arsenide)

using model chemistry: MP2/3-21G

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 MP2/3-21G
 hartrees
Energy at 0K-4137.337897
Energy at 298.15K 
HF Energy-4137.289090
Nuclear repulsion energy202.851054
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 MP2/3-21G
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 202 193 20.33 7764.94 0.10 0.18

Unscaled Zero Point Vibrational Energy (zpe) 100.8 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 96.2 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 MP2/3-21G
B
0.06593

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 -1.376
As2 0.000 0.000 1.293

Atom - Atom Distances (Å)
  Ga1 As2
Ga12.6687
As22.6687

picture of Gallium arsenide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (1Σ)

Jump to S1C1
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-4137.287963
Energy at 298.15K 
HF Energy-4137.227980
Nuclear repulsion energy204.226360
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 MP2/3-21G
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 208 199 19.10 1269.46 0.43 0.60

Unscaled Zero Point Vibrational Energy (zpe) 104.1 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 99.4 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 MP2/3-21G
B
0.06683

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ga1 0.000 0.000 -1.367
As2 0.000 0.000 1.284

Atom - Atom Distances (Å)
  Ga1 As2
Ga12.6507
As22.6507

picture of Gallium arsenide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability