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All results from a given calculation for Na2S (Sodium sulfide)

using model chemistry: MP2=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no D*H 1ΣG
1 2 yes C2V 1A1

Conformer 1 (D*H)

Jump to S1C2
Energy calculated at MP2=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-721.962857
Energy at 298.15K 
HF Energy-721.291056
Nuclear repulsion energy90.474456
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=FULL/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 283 267 0.00 153.12 0.07 0.13
2 Σu 434 409 123.81 0.00 0.00 0.00
3 Πu 23i 21i 71.67 0.00 0.00 0.00
3 Πu 23i 21i 71.67 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 336.0 cm-1
Scaled (by 0.9427) Zero Point Vibrational Energy (zpe) 316.7 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=FULL/6-311+G(3df,2p)
B
0.06298

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311+G(3df,2p)

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.000
Na2 0.000 0.000 2.413
Na3 0.000 0.000 -2.413

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.41272.4127
Na22.41274.8254
Na32.41274.8254

picture of Sodium sulfide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Na2 S1 Na3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP2=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-721.963157
Energy at 298.15K 
HF Energy-721.290545
Nuclear repulsion energy91.057615
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=FULL/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 300 283 12.36 249.55 0.05 0.10
2 A1 32 30 49.01 7.43 0.24 0.39
3 B2 412 388 105.77 5.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 372.2 cm-1
Scaled (by 0.9427) Zero Point Vibrational Energy (zpe) 350.9 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 MP2=FULL/6-311+G(3df,2p)
ABC
1.04996 0.07284 0.06812

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.534
Na2 0.000 2.243 -0.389
Na3 0.000 -2.243 -0.389

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.42582.4258
Na22.42584.4869
Na32.42584.4869

picture of Sodium sulfide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Na2 S1 Na3 135.287
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability