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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-115.440092
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 3192 0.16 117.98 0.12 0.22
2 A1 3164 2999 28.12 93.33 0.15 0.26
3 A1 1661 1575 13.13 10.14 0.46 0.63
4 A1 1582 1500 0.00 15.67 0.23 0.38
5 A1 1133 1074 1.12 5.10 0.15 0.26
6 A1 937 888 2.11 12.45 0.47 0.64
7 A2 1058 1003 0.00 19.24 0.75 0.86
8 A2 863 818 0.00 0.01 0.75 0.86
9 B1 3251 3082 34.14 64.29 0.75 0.86
10 B1 1139 1080 2.07 4.10 0.75 0.86
11 B1 622 589 96.54 1.45 0.75 0.86
12 B2 3319 3147 0.00 61.09 0.75 0.86
13 B2 1141 1081 0.23 0.00 0.75 0.86
14 B2 1109 1051 69.20 1.09 0.75 0.86
15 B2 704 667 6.60 16.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12524.2 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 11872.9 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
Charges, Dipole, Quadrupole and Polarizability