return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: MP2=FULL/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at MP2=FULL/6-311G**
 hartrees
Energy at 0K-116.332495
Energy at 298.15K-116.335715
HF Energy-115.850606
Nuclear repulsion energy63.659493
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 MP2=FULL/6-311G**
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 3352 3180 0.10 148.23 0.15 0.26
2 A1 3113 2953 54.56 132.05 0.15 0.26
3 A1 1693 1606 14.60 22.26 0.17 0.29
4 A1 1541 1462 1.69 14.17 0.24 0.38
5 A1 1182 1121 0.24 10.48 0.16 0.28
6 A1 941 893 4.87 5.88 0.55 0.71
7 A2 1033 980 0.00 8.62 0.75 0.86
8 A2 845 801 0.00 0.00 0.75 0.86
9 B1 3193 3029 43.52 88.31 0.75 0.86
10 B1 1128 1070 1.68 2.19 0.75 0.86
11 B1 591 560 79.66 0.92 0.75 0.86
12 B2 3306 3136 0.55 73.91 0.75 0.86
13 B2 1085 1029 26.58 0.22 0.75 0.86
14 B2 1041 988 32.10 0.01 0.75 0.86
15 B2 808 767 12.75 15.18 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12426.0 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 11787.3 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 MP2=FULL/6-311G**
ABC
0.99506 0.73139 0.46046

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.863
C2 0.000 0.652 -0.501
C3 0.000 -0.652 -0.501
H4 0.000 1.585 -1.038
H5 0.000 -1.585 -1.038
H6 0.916 0.000 1.454
H7 -0.916 0.000 1.454

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51091.51092.47492.47491.08971.0897
C21.51091.30321.07692.30002.25422.2542
C31.51091.30322.30001.07692.25422.2542
H42.47491.07692.30003.16933.09183.0918
H52.47492.30001.07693.16933.09183.0918
H61.08972.25422.25423.09183.09181.8312
H71.08972.25422.25423.09183.09181.8312

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.453 C1 C2 H4 145.509
C1 C3 C2 64.453 C1 C3 H5 145.509
C2 C1 C3 51.095 C2 C1 H6 119.290
C2 C1 H7 119.290 C2 C3 H5 150.038
C3 C1 H6 119.290 C3 C1 H7 119.290
C3 C2 H4 150.038 H6 C1 H7 114.326
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability