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

using model chemistry: QCISD/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/daug-cc-pVDZ
 hartrees
Energy at 0K-364.849201
Energy at 298.15K 
HF Energy-364.506041
Nuclear repulsion energy62.078598
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/daug-cc-pVDZ
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 1773 1773 30.18      
2 A1 778 778 156.16      
3 B2 185i 185i 102.10      

Unscaled Zero Point Vibrational Energy (zpe) 1182.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1182.9 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/daug-cc-pVDZ
ABC
1.67889 0.42008 0.33601

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.813
C2 0.000 0.647 -0.949
C3 0.000 -0.647 -0.949

Atom - Atom Distances (Å)
  Si1 C2 C3
Si11.87751.8775
C21.87751.2936
C31.87751.2936

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 40.305
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability