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All results from a given calculation for SiC2 (Silicon dicarbide)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-364.970708
Energy at 298.15K-364.966845
HF Energy-364.479574
Nuclear repulsion energy63.500907
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 1985 1985 46.59 37.14 0.06 0.12
2 A1 846 846 179.35 31.83 0.36 0.53
3 B2 343i 343i 74.36 7.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1244.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1244.2 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 CBS-Q
ABC
1.67753 0.43847 0.34761

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.798
C2 0.000 0.629 -0.930
C3 0.000 -0.629 -0.930

Atom - Atom Distances (Å)
  Si1 C2 C3
Si11.83871.8387
C21.83871.2573
C31.83871.2573

picture of Silicon dicarbide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C2 Si1 C3 39.985
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability