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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: CCSD/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 CCSD/cc-pVDZ
 hartrees
Energy at 0K-116.264299
Energy at 298.15K-116.267498
HF Energy-115.830834
Nuclear repulsion energy63.116388
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/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 3328 3152 0.14      
2 A1 3088 2925 55.37      
3 A1 1715 1625 14.63      
4 A1 1520 1440 2.45      
5 A1 1185 1122 0.30      
6 A1 928 879 3.16      
7 A2 1017 963 0.00      
8 A2 828 784 0.00      
9 B1 3162 2996 46.30      
10 B1 1103 1045 1.99      
11 B1 587 556 68.00      
12 B2 3283 3110 0.26      
13 B2 1080 1023 32.93      
14 B2 1044 989 17.62      
15 B2 801 758 14.23      

Unscaled Zero Point Vibrational Energy (zpe) 12333.6 cm-1
Scaled (by 0.9473) Zero Point Vibrational Energy (zpe) 11683.6 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/cc-pVDZ
ABC
0.97926 0.71879 0.45281

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.869
C2 0.000 0.657 -0.504
C3 0.000 -0.657 -0.504
H4 0.000 1.598 -1.052
H5 0.000 -1.598 -1.052
H6 0.924 0.000 1.470
H7 -0.924 0.000 1.470

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.52211.52212.49852.49851.10221.1022
C21.52211.31321.08912.32022.27682.2768
C31.52211.31322.32021.08912.27682.2768
H42.49851.08912.32023.19633.12543.1254
H52.49852.32021.08913.19633.12543.1254
H61.10222.27682.27683.12543.12541.8470
H71.10222.27682.27683.12543.12541.8470

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.444 C1 C2 H4 145.727
C1 C3 C2 64.444 C1 C3 H5 145.727
C2 C1 C3 51.111 C2 C1 H6 119.499
C2 C1 H7 119.499 C2 C3 H5 149.829
C3 C1 H6 119.499 C3 C1 H7 119.499
C3 C2 H4 149.829 H6 C1 H7 113.842
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability