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

using model chemistry: MP2/6-311G*

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 MP2/6-311G*
 hartrees
Energy at 0K-721.429122
Energy at 298.15K 
HF Energy-721.286264
Nuclear repulsion energy90.035279
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 MP2/6-311G*
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 285 271 0.00 194.60 0.10 0.19
2 Σu 431 409 127.56 0.00 0.00 0.00
3 Πu 55i 52i 80.46 0.00 0.00 0.00
3 Πu 55i 52i 80.46 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 303.4 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 288.3 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 MP2/6-311G*
B
0.06237

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

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 2.424
Na3 0.000 0.000 -2.424

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.42442.4244
Na22.42444.8489
Na32.42444.8489

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 MP2/6-311G*
 hartrees
Energy at 0K-721.431814
Energy at 298.15K 
HF Energy-721.283743
Nuclear repulsion energy91.492550
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 MP2/6-311G*
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 319 303 16.06 374.07 0.04 0.09
2 A1 61 58 29.74 20.97 0.39 0.56
3 B2 395 376 92.25 10.83 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 387.5 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 368.3 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 MP2/6-311G*
ABC
0.57500 0.08308 0.07259

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.722
Na2 0.000 2.101 -0.525
Na3 0.000 -2.101 -0.525

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.44282.4428
Na22.44284.2013
Na32.44284.2013

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 118.618
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability