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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: CCD/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 CCD/cc-pVDZ
 hartrees
Energy at 0K-116.261482
Energy at 298.15K-116.264695
HF Energy-115.831063
Nuclear repulsion energy63.169641
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-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3335 3191 0.20      
2 A1 3094 2960 54.36      
3 A1 1729 1654 13.72      
4 A1 1524 1458 2.51      
5 A1 1191 1140 0.31      
6 A1 931 891 3.34      
7 A2 1020 976 0.00      
8 A2 840 803 0.00      
9 B1 3170 3033 45.93      
10 B1 1107 1059 2.06      
11 B1 592 566 68.68      
12 B2 3290 3147 0.34      
13 B2 1086 1039 29.52      
14 B2 1049 1003 18.80      
15 B2 808 773 14.32      

Unscaled Zero Point Vibrational Energy (zpe) 12383.0 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 11846.8 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-pVDZ
ABC
0.98152 0.71963 0.45360

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.868
C2 0.000 0.656 -0.504
C3 0.000 -0.656 -0.504
H4 0.000 1.597 -1.051
H5 0.000 -1.597 -1.051
H6 0.923 0.000 1.470
H7 -0.923 0.000 1.470

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.52091.52092.49672.49671.10191.1019
C21.52091.31121.08882.31812.27562.2756
C31.52091.31122.31811.08882.27562.2756
H42.49671.08882.31813.19443.12363.1236
H52.49672.31811.08883.19443.12363.1236
H61.10192.27562.27563.12363.12361.8465
H71.10192.27562.27563.12363.12361.8465

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.465 C1 C2 H4 145.673
C1 C3 C2 64.465 C1 C3 H5 145.673
C2 C1 C3 51.069 C2 C1 H6 119.512
C2 C1 H7 119.512 C2 C3 H5 149.862
C3 C1 H6 119.512 C3 C1 H7 119.512
C3 C2 H4 149.862 H6 C1 H7 113.823
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability