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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: CCSD(T)/aug-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(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-116.298331
Energy at 298.15K-116.301435
HF Energy-115.833244
Nuclear repulsion energy62.845981
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(T)/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 3292 3169        
2 A1 3058 2943        
3 A1 1659 1597        
4 A1 1499 1443        
5 A1 1143 1101        
6 A1 910 876        
7 A2 1001 963        
8 A2 754 726        
9 B1 3134 3017        
10 B1 1078 1038        
11 B1 528 508        
12 B2 3249 3127        
13 B2 1048 1009        
14 B2 1012 974        
15 B2 769 740        

Unscaled Zero Point Vibrational Energy (zpe) 12066.9 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 11614.4 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 CCSD(T)/aug-cc-pVDZ
ABC
0.97141 0.71159 0.44842

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.875
C2 0.000 0.660 -0.507
C3 0.000 -0.660 -0.507
H4 0.000 1.601 -1.057
H5 0.000 -1.601 -1.057
H6 0.925 0.000 1.472
H7 -0.925 0.000 1.472

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.53181.53182.50912.50911.10121.1012
C21.53181.32061.08952.32702.28252.2825
C31.53181.32062.32701.08952.28252.2825
H42.50911.08952.32703.20153.13303.1330
H52.50912.32701.08953.20153.13303.1330
H61.10122.28252.28253.13303.13301.8503
H71.10122.28252.28253.13303.13301.8503

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 145.855
C1 C3 C2 64.465 C1 C3 H5 145.855
C2 C1 C3 51.069 C2 C1 H6 119.297
C2 C1 H7 119.297 C2 C3 H5 149.679
C3 C1 H6 119.297 C3 C1 H7 119.297
C3 C2 H4 149.679 H6 C1 H7 114.318
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability