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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: CCSD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at CCSD/aug-cc-pVTZ
 hartrees
Energy at 0K-116.380355
Energy at 298.15K-116.383587
HF Energy-115.866017
Nuclear repulsion energy63.863989
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 CCSD/aug-cc-pVTZ
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 3328 3181 0.38      
2 A1 3088 2952 56.18      
3 A1 1720 1644 18.75      
4 A1 1541 1473 0.94      
5 A1 1174 1122 0.00      
6 A1 940 898 3.72      
7 A2 1031 986 0.00      
8 A2 856 818 0.00      
9 B1 3157 3017 33.74      
10 B1 1116 1067 1.78      
11 B1 600 573 81.67      
12 B2 3281 3136 0.76      
13 B2 1089 1041 20.23      
14 B2 1055 1008 32.30      
15 B2 809 773 16.08      

Unscaled Zero Point Vibrational Energy (zpe) 12391.7 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 11843.9 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 CCSD/aug-cc-pVTZ
ABC
1.00740 0.73197 0.46300

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.863
C2 0.000 0.647 -0.500
C3 0.000 -0.647 -0.500
H4 0.000 1.576 -1.038
H5 0.000 -1.576 -1.038
H6 0.912 0.000 1.453
H7 -0.912 0.000 1.453

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50901.50902.46952.46951.08641.0864
C21.50901.29411.07372.28752.25072.2507
C31.50901.29412.28751.07372.25072.2507
H42.46951.07372.28753.15263.08583.0858
H52.46952.28751.07373.15263.08583.0858
H61.08642.25072.25073.08583.08581.8245
H71.08642.25072.25073.08583.08581.8245

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.609 C1 C2 H4 145.451
C1 C3 C2 64.609 C1 C3 H5 145.451
C2 C1 C3 50.782 C2 C1 H6 119.380
C2 C1 H7 119.380 C2 C3 H5 149.940
C3 C1 H6 119.380 C3 C1 H7 119.380
C3 C2 H4 149.940 H6 C1 H7 114.216
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability