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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: QCISD(T)/aug-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 QCISD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-116.405699
Energy at 298.15K-116.408883
HF Energy-115.865200
Nuclear repulsion energy63.617868
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 QCISD(T)/aug-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 3297 3188        
2 A1 3066 2964        
3 A1 1676 1620        
4 A1 1520 1470        
5 A1 1151 1113        
6 A1 925 894        
7 A2 1018 984        
8 A2 824 796        
9 B1 3136 3032        
10 B1 1099 1062        
11 B1 576 557        
12 B2 3252 3144        
13 B2 1068 1032        
14 B2 1032 998        
15 B2 787 761        

Unscaled Zero Point Vibrational Energy (zpe) 12212.8 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 11807.3 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 QCISD(T)/aug-cc-pVTZ
ABC
0.99782 0.72732 0.45935

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.866
C2 0.000 0.651 -0.502
C3 0.000 -0.651 -0.502
H4 0.000 1.582 -1.041
H5 0.000 -1.582 -1.041
H6 0.915 0.000 1.456
H7 -0.915 0.000 1.456

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51501.51502.47802.47801.08831.0883
C21.51501.30151.07612.29692.25682.2568
C31.51501.30152.29691.07612.25682.2568
H42.47801.07612.29693.16393.09423.0942
H52.47802.29691.07613.16393.09423.0942
H61.08832.25682.25683.09423.09421.8295
H71.08832.25682.25683.09423.09421.8295

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.562 C1 C2 H4 145.510
C1 C3 C2 64.562 C1 C3 H5 145.510
C2 C1 C3 50.875 C2 C1 H6 119.292
C2 C1 H7 119.292 C2 C3 H5 149.928
C3 C1 H6 119.292 C3 C1 H7 119.292
C3 C2 H4 149.928 H6 C1 H7 114.389
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability