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All results from a given calculation for SiC (silicon monocarbide)

using model chemistry: CCSD/cc-pV(T+d)Z

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 3Σ
2 1 yes C*V 1Σ

State 1 (3Σ)

Jump to S2C1
Energy calculated at CCSD/cc-pV(T+d)Z
 hartrees
Energy at 0K-326.852290
Energy at 298.15K-326.850554
HF Energy-326.645816
Nuclear repulsion energy25.852883
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 CCSD/cc-pV(T+d)Z
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 975 975 14.95      

Unscaled Zero Point Vibrational Energy (zpe) 487.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 487.6 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 CCSD/cc-pV(T+d)Z
B
0.67902

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pV(T+d)Z

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.516
C2 0.000 0.000 -1.204

Atom - Atom Distances (Å)
  Si1 C2
Si11.7194
C21.7194

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (1Σ)

Jump to S1C1
Energy calculated at CCSD/cc-pV(T+d)Z
 hartrees
Energy at 0K-326.815913
Energy at 298.15K-326.814192
HF Energy-326.536035
Nuclear repulsion energy26.897815
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 CCSD/cc-pV(T+d)Z
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 1069 1069 2.55      

Unscaled Zero Point Vibrational Energy (zpe) 534.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 534.4 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 CCSD/cc-pV(T+d)Z
B
0.73502

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pV(T+d)Z

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.496
C2 0.000 0.000 -1.157

Atom - Atom Distances (Å)
  Si1 C2
Si11.6526
C21.6526

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability