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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: CCD/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 CCD/cc-pVTZ
 hartrees
Energy at 0K-116.370601
Energy at 298.15K-116.373849
HF Energy-115.865336
Nuclear repulsion energy63.935176
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 CCD/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 3345 3124 0.44      
2 A1 3098 2893 55.64      
3 A1 1737 1622 16.34      
4 A1 1547 1444 1.36      
5 A1 1184 1105 0.04      
6 A1 945 882 3.96      
7 A2 1036 967 0.00      
8 A2 867 810 0.00      
9 B1 3170 2960 36.99      
10 B1 1127 1053 2.03      
11 B1 605 565 79.21      
12 B2 3296 3078 0.65      
13 B2 1100 1027 22.19      
14 B2 1066 995 31.33      
15 B2 817 763 15.59      

Unscaled Zero Point Vibrational Energy (zpe) 12469.9 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 11643.2 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 CCD/cc-pVTZ
ABC
1.01026 0.73323 0.46401

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.862
C2 0.000 0.646 -0.500
C3 0.000 -0.646 -0.500
H4 0.000 1.575 -1.037
H5 0.000 -1.575 -1.037
H6 0.911 0.000 1.452
H7 -0.911 0.000 1.452

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50741.50742.46692.46691.08561.0856
C21.50741.29201.07272.28462.24912.2491
C31.50741.29202.28461.07272.24912.2491
H42.46691.07272.28463.14933.08313.0831
H52.46692.28461.07273.14933.08313.0831
H61.08562.24912.24913.08313.08311.8224
H71.08562.24912.24913.08313.08311.8224

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.625 C1 C2 H4 145.414
C1 C3 C2 64.625 C1 C3 H5 145.414
C2 C1 C3 50.750 C2 C1 H6 119.416
C2 C1 H7 119.416 C2 C3 H5 149.960
C3 C1 H6 119.416 C3 C1 H7 119.416
C3 C2 H4 149.960 H6 C1 H7 114.142
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability