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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: CCSD(T)/cc-pVQZ

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)/cc-pVQZ
 hartrees
Energy at 0K-116.431450
Energy at 298.15K-116.434640
HF Energy-115.872323
Nuclear repulsion energy63.786933
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)/cc-pVQZ
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 3310 3210        
2 A1 3072 2979        
3 A1 1688 1637        
4 A1 1522 1476        
5 A1 1158 1123        
6 A1 927 898        
7 A2 1021 990        
8 A2 831 805        
9 B1 3144 3049        
10 B1 1107 1074        
11 B1 578 560        
12 B2 3267 3168        
13 B2 1072 1039        
14 B2 1041 1009        
15 B2 794 770        

Unscaled Zero Point Vibrational Energy (zpe) 12264.7 cm-1
Scaled (by 0.9697) Zero Point Vibrational Energy (zpe) 11893.1 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)/cc-pVQZ
ABC
1.00361 0.73111 0.46192

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.863
C2 0.000 0.649 -0.501
C3 0.000 -0.649 -0.501
H4 0.000 1.578 -1.039
H5 0.000 -1.578 -1.039
H6 0.913 0.000 1.453
H7 -0.913 0.000 1.453

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51041.51042.47202.47201.08681.0868
C21.51041.29721.07442.29112.25192.2519
C31.51041.29722.29111.07442.25192.2519
H42.47201.07442.29113.15673.08793.0879
H52.47202.29111.07443.15673.08793.0879
H61.08682.25192.25193.08793.08791.8258
H71.08682.25192.25193.08793.08791.8258

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.571 C1 C2 H4 145.501
C1 C3 C2 64.571 C1 C3 H5 145.501
C2 C1 C3 50.858 C2 C1 H6 119.340
C2 C1 H7 119.340 C2 C3 H5 149.928
C3 C1 H6 119.340 C3 C1 H7 119.340
C3 C2 H4 149.928 H6 C1 H7 114.285
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability