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

using model chemistry: MP2=FULL/aug-cc-pVDZ

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 MP2=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-113.717890
Energy at 298.15K 
HF Energy-113.365119
Nuclear repulsion energy36.133466
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=FULL/aug-cc-pVDZ
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 1183 1146 0.00      
2 Σu 2127 2062 493.33      
3 Πu 70i 68i 24.37      
3 Πu 70i 68i 24.37      

Unscaled Zero Point Vibrational Energy (zpe) 1585.3 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 1536.4 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/aug-cc-pVDZ
B
0.40431

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVDZ

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 1.318
C3 0.000 0.000 -1.318

Atom - Atom Distances (Å)
  C1 C2 C3
C11.31811.3181
C21.31812.6361
C31.31812.6361

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 MP2=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-113.717899
Energy at 298.15K 
HF Energy-113.365184
Nuclear repulsion energy36.153444
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=FULL/aug-cc-pVDZ
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 1188 1152 0.00      
2 A1 94 91 23.46      
3 B2 2125 2060 490.21      

Unscaled Zero Point Vibrational Energy (zpe) 1704.0 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 1651.5 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/aug-cc-pVDZ
ABC
294.97241 0.40610 0.40554

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.056
C2 0.000 1.315 -0.028
C3 0.000 -1.315 -0.028

Atom - Atom Distances (Å)
  C1 C2 C3
C11.31791.3179
C21.31792.6303
C31.31792.6303

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 172.646
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability