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All results from a given calculation for C3 (carbon trimer)

using model chemistry: MP3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no D*H 1Σg
1 2 yes C2V 1A1

Conformer 1 (D*H)

Jump to S1C2
Energy calculated at MP3/TZVP
 hartrees
Energy at 0K-113.740250
Energy at 298.15K 
HF Energy-113.388228
Nuclear repulsion energy37.107145
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 MP3/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 Σg 1294 1210 0.00      
2 Σu 2248 2102 991.44      
3 Πu 201i 188i 7.12      
3 Πu 201i 188i 7.12      

Unscaled Zero Point Vibrational Energy (zpe) 1569.4 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 1467.7 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 MP3/TZVP
B
0.42640

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/TZVP

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.000 0.000 1.283
C3 0.000 0.000 -1.283

Atom - Atom Distances (Å)
  C1 C2 C3
C11.28351.2835
C21.28352.5669
C31.28352.5669

picture of carbon trimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C2 C1 C3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP3/TZVP
 hartrees
Energy at 0K-113.740553
Energy at 298.15K 
HF Energy-113.387672
Nuclear repulsion energy37.210762
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 MP3/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 A1 1328 1242 2.05      
2 A1 124 116 6.22      
3 B2 2225 2081 927.37      

Unscaled Zero Point Vibrational Energy (zpe) 1838.4 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 1719.2 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 MP3/TZVP
ABC
42.15040 0.43946 0.43493

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.149
C2 0.000 1.264 -0.075
C3 0.000 -1.264 -0.075

Atom - Atom Distances (Å)
  C1 C2 C3
C11.28391.2839
C21.28392.5285
C31.28392.5285

picture of carbon trimer state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C2 C1 C3 159.941
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability