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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: MP2=FULL/3-21G

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/3-21G
 hartrees
Energy at 0K-115.436885
Energy at 298.15K-115.440098
HF Energy-115.159795
Nuclear repulsion energy62.881744
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/3-21G
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 3368 3215 0.16 117.98 0.12 0.22
2 A1 3164 3021 28.12 93.33 0.15 0.26
3 A1 1661 1586 13.13 10.14 0.46 0.63
4 A1 1582 1511 0.00 15.67 0.23 0.38
5 A1 1133 1081 1.12 5.10 0.15 0.26
6 A1 937 894 2.11 12.45 0.47 0.64
7 A2 1058 1010 0.00 19.24 0.75 0.86
8 A2 863 824 0.00 0.01 0.75 0.86
9 B1 3251 3104 34.14 64.29 0.75 0.86
10 B1 1139 1088 2.07 4.10 0.75 0.86
11 B1 622 594 96.54 1.45 0.75 0.86
12 B2 3319 3169 0.00 61.09 0.75 0.86
13 B2 1141 1089 0.23 0.00 0.75 0.86
14 B2 1109 1059 69.20 1.09 0.75 0.86
15 B2 704 672 6.60 16.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12524.2 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 11958.1 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 MP2=FULL/3-21G
ABC
0.98933 0.69839 0.44620

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.891
C2 0.000 0.656 -0.513
C3 0.000 -0.656 -0.513
H4 0.000 1.576 -1.064
H5 0.000 -1.576 -1.064
H6 0.918 0.000 1.469
H7 -0.918 0.000 1.469

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.54921.54922.51072.51071.08471.0847
C21.54921.31241.07222.29922.28002.2800
C31.54921.31242.29921.07222.28002.2800
H42.51071.07222.29923.15193.12073.1207
H52.51072.29921.07223.15193.12073.1207
H61.08472.28002.28003.12073.12071.8358
H71.08472.28002.28003.12073.12071.8358

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.939 C1 C2 H4 145.990
C1 C3 C2 64.939 C1 C3 H5 145.990
C2 C1 C3 50.123 C2 C1 H6 118.858
C2 C1 H7 118.858 C2 C3 H5 149.071
C3 C1 H6 118.858 C3 C1 H7 118.858
C3 C2 H4 149.071 H6 C1 H7 115.611
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability