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

using model chemistry: MP2/6-311+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 MP2/6-311+G(3df,2p)
 hartrees
Energy at 0K-721.489293
Energy at 298.15K 
HF Energy-721.291029
Nuclear repulsion energy89.438943
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 MP2/6-311+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 276 260 0.00 161.60 0.07 0.14
2 Σu 423 399 125.98 0.00 0.00 0.00
3 Πu 25i 24i 73.91 0.00 0.00 0.00
3 Πu 25i 24i 73.91 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 323.9 cm-1
Scaled (by 0.9434) Zero Point Vibrational Energy (zpe) 305.5 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 MP2/6-311+G(3df,2p)
B
0.06155

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311+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 2.441
Na3 0.000 0.000 -2.441

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.44062.4406
Na22.44064.8812
Na32.44064.8812

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 MP2/6-311+G(3df,2p)
 hartrees
Energy at 0K-721.489623
Energy at 298.15K 
HF Energy-721.290567
Nuclear repulsion energy89.960421
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 MP2/6-311+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 291 274 11.85 252.78 0.05 0.10
2 A1 33 31 53.02 7.06 0.22 0.36
3 B2 403 380 108.07 5.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 363.4 cm-1
Scaled (by 0.9434) Zero Point Vibrational Energy (zpe) 342.8 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 MP2/6-311+G(3df,2p)
ABC
1.12765 0.07021 0.06609

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.515
Na2 0.000 2.285 -0.375
Na3 0.000 -2.285 -0.375

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.45252.4525
Na22.45254.5704
Na32.45254.5704

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 137.427
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability