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

using model chemistry: CCSD/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 CCSD/TZVP
 hartrees
Energy at 0K-326.811105
Energy at 298.15K-326.809365
HF Energy-326.633241
Nuclear repulsion energy25.639495
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/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 957 913 16.84      

Unscaled Zero Point Vibrational Energy (zpe) 478.4 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 456.6 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/TZVP
B
0.66786

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.520
C2 0.000 0.000 -1.214

Atom - Atom Distances (Å)
  Si1 C2
Si11.7337
C21.7337

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/TZVP
 hartrees
Energy at 0K-326.774661
Energy at 298.15K-326.772938
HF Energy-326.521628
Nuclear repulsion energy26.694327
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/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 1053 1005 2.20      

Unscaled Zero Point Vibrational Energy (zpe) 526.5 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 502.5 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 CCSD/TZVP
B
0.72394

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.500
C2 0.000 0.000 -1.166

Atom - Atom Distances (Å)
  Si1 C2
Si11.6652
C21.6652

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