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

using model chemistry: MP4=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 MP4=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-721.992316
Energy at 298.15K 
HF Energy-721.291056
Nuclear repulsion energy90.473158
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 MP4=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 283 283        
2 Σu 434 434        
3 Πu 27i 27i        
3 Πu 27i 27i        

Unscaled Zero Point Vibrational Energy (zpe) 331.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 331.4 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 MP4=FULL/6-311+G(3df,2p)
B
0.06298

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=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
S12.41282.4128
Na22.41284.8257
Na32.41284.8257

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 MP4=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-721.992947
Energy at 298.15K 
HF Energy-721.290141
Nuclear repulsion energy91.270516
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 MP4=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 305 305        
2 A1 41 41        
3 B2 402 402        

Unscaled Zero Point Vibrational Energy (zpe) 373.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 373.9 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 MP4=FULL/6-311+G(3df,2p)
ABC
0.77820 0.07695 0.07003

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.620
Na2 0.000 2.183 -0.451
Na3 0.000 -2.183 -0.451

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.43172.4317
Na22.43174.3655
Na32.43174.3655

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 127.696
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability