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

using model chemistry: MP2/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/cc-pVQZ
 hartrees
Energy at 0K-364.939491
Energy at 298.15K 
HF Energy-364.541582
Nuclear repulsion energy63.371750
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 MP2/cc-pVQZ
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 1742 1652 13.00 27.90 0.07 0.12
2 A1 823 780 166.72 37.84 0.22 0.36
3 B2 219 207 141.62 11.94 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1391.6 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 1319.8 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 MP2/cc-pVQZ
ABC
1.72549 0.44073 0.35106

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.794
C2 0.000 0.638 -0.927
C3 0.000 -0.638 -0.927

Atom - Atom Distances (Å)
  Si1 C2 C3
Si11.83521.8352
C21.83521.2760
C31.83521.2760

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 40.688
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability