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

using model chemistry: G2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at G2
 hartrees
Energy at 0K-364.971760
Energy at 298.15K-364.967890
HF Energy-364.477694
Nuclear repulsion energy63.597911
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 HF/6-31G*
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 1992 1877 45.44 37.19 0.07 0.13
2 A1 849 800 183.11 31.48 0.37 0.54
3 B2 338i 319i 72.63 8.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1251.5 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 1179.1 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=FULL/6-31G*
ABC
1.70164 0.44258 0.35123

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.793
C2 0.000 0.642 -0.925
C3 0.000 -0.642 -0.925

Atom - Atom Distances (Å)
  Si1 C2 C3
Si11.83341.8334
C21.83341.2850
C31.83341.2850

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 39.896
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability