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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: QCISD(T)=FULL/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 QCISD(T)=FULL/cc-pVDZ
 hartrees
Energy at 0K-116.288188
Energy at 298.15K-116.291348
HF Energy-115.830115
Nuclear repulsion energy62.965327
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)=FULL/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 3308 3172        
2 A1 3075 2949        
3 A1 1678 1609        
4 A1 1506 1445        
5 A1 1169 1121        
6 A1 917 880        
7 A2 1008 967        
8 A2 801 768        
9 B1 3151 3022        
10 B1 1090 1046        
11 B1 567 544        
12 B2 3264 3131        
13 B2 1065 1021        
14 B2 1027 985        
15 B2 784 752        

Unscaled Zero Point Vibrational Energy (zpe) 12205.1 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 11704.7 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)=FULL/cc-pVDZ
ABC
0.97285 0.71645 0.45058

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.871
C2 0.000 0.659 -0.505
C3 0.000 -0.659 -0.505
H4 0.000 1.601 -1.054
H5 0.000 -1.601 -1.054
H6 0.924 0.000 1.472
H7 -0.924 0.000 1.472

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.52561.52562.50372.50371.10281.1028
C21.52561.31891.09012.32642.27992.2799
C31.52561.31892.32641.09012.27992.2799
H42.50371.09012.32643.20253.13043.1304
H52.50372.32641.09013.20253.13043.1304
H61.10282.27992.27993.13043.13041.8487
H71.10282.27992.27993.13043.13041.8487

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.388 C1 C2 H4 145.854
C1 C3 C2 64.388 C1 C3 H5 145.854
C2 C1 C3 51.225 C2 C1 H6 119.456
C2 C1 H7 119.456 C2 C3 H5 149.758
C3 C1 H6 119.456 C3 C1 H7 119.456
C3 C2 H4 149.758 H6 C1 H7 113.904
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability