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

using model chemistry: B2PLYP=FULLultrafine/3-21G*

19 10 17 12 22

States and conformations

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

Conformer 1 (D*H)

Jump to S1C2
Energy calculated at B2PLYP=FULLultrafine/3-21G*
 hartrees
Energy at 0K-718.571685
Energy at 298.15K 
HF Energy-718.519327
Nuclear repulsion energy91.828230
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 B2PLYP=FULLultrafine/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 Σg 284 284 0.00 448.57 0.09 0.16
2 Σu 411 411 109.79 0.00 0.00 0.00
3 Πu 16i 16i 52.64 0.00 0.75 0.86
3 Πu 16i 16i 52.64 0.00 0.54 0.70

Unscaled Zero Point Vibrational Energy (zpe) 331.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 331.5 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 B2PLYP=FULLultrafine/3-21G*
B
0.06488

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G*

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 2.377
Na3 0.000 0.000 -2.377

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.37712.3771
Na22.37714.7542
Na32.37714.7542

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 B2PLYP=FULLultrafine/3-21G*
 hartrees
Energy at 0K-718.573255
Energy at 298.15K 
HF Energy-718.518693
Nuclear repulsion energy93.080293
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 B2PLYP=FULLultrafine/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 A1 299 299 8.15      
2 A1 67 67 25.45      
3 B2 373 373 80.17      

Unscaled Zero Point Vibrational Energy (zpe) 369.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 369.6 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 B2PLYP=FULLultrafine/3-21G*
ABC
0.52324 0.08937 0.07633

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.757
Na2 0.000 2.025 -0.550
Na3 0.000 -2.025 -0.550

Atom - Atom Distances (Å)
  S1 Na2 Na3
S12.41052.4105
Na22.41054.0508
Na32.41054.0508

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 114.330
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability