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

using model chemistry: QCISD(T)/TZVP

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 QCISD(T)/TZVP
 hartrees
Energy at 0K-326.822284
Energy at 298.15K-326.820544
HF Energy-326.633405
Nuclear repulsion energy25.565371
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 QCISD(T)/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 958 923        

Unscaled Zero Point Vibrational Energy (zpe) 479.0 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 461.4 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 QCISD(T)/TZVP
B
0.66414

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.522
C2 0.000 0.000 -1.217

Atom - Atom Distances (Å)
  Si1 C2
Si11.7385
C21.7385

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 QCISD(T)/TZVP
 hartrees
Energy at 0K-326.801696
Energy at 298.15K-326.799970
HF Energy-326.521222
Nuclear repulsion energy26.560930
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 QCISD(T)/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 1033 995        

Unscaled Zero Point Vibrational Energy (zpe) 516.6 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 497.6 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 QCISD(T)/TZVP
B
0.71688

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.502
C2 0.000 0.000 -1.171

Atom - Atom Distances (Å)
  Si1 C2
Si11.6734
C21.6734

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