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All results from a given calculation for C4H6 (1-Methylcyclopropene)

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-155.975222
Energy at 298.15K 
HF Energy-155.975222
Nuclear repulsion energy108.169076
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 TPSSh/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3280 3165 0.61 119.77 0.30 0.46
2 A' 3110 3001 20.42 86.52 0.72 0.84
3 A' 3023 2918 20.34 254.84 0.01 0.01
4 A' 3020 2914 96.27 61.84 0.46 0.63
5 A' 1862 1797 11.75 50.78 0.19 0.33
6 A' 1535 1481 10.05 16.39 0.38 0.55
7 A' 1494 1441 7.67 20.65 0.67 0.81
8 A' 1409 1360 0.98 16.59 0.53 0.69
9 A' 1203 1161 0.90 4.97 0.37 0.54
10 A' 1100 1062 17.27 1.67 0.21 0.34
11 A' 1072 1034 19.55 0.12 0.75 0.86
12 A' 985 951 4.07 9.70 0.45 0.62
13 A' 956 923 11.33 8.98 0.59 0.75
14 A' 690 666 0.31 16.20 0.54 0.70
15 A' 321 310 1.58 1.63 0.74 0.85
16 A" 3080 2972 0.07 86.36 0.75 0.86
17 A" 3078 2970 79.44 99.19 0.75 0.86
18 A" 1490 1438 5.63 14.80 0.75 0.86
19 A" 1123 1084 1.41 1.99 0.75 0.86
20 A" 1051 1014 0.59 4.19 0.75 0.86
21 A" 994 959 2.51 8.69 0.75 0.86
22 A" 748 722 25.11 0.90 0.75 0.86
23 A" 306 296 8.70 0.84 0.75 0.86
24 A" 162 157 0.39 0.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18545.3 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 17896.2 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 TPSSh/6-31G(2df,p)
ABC
0.69181 0.21156 0.17278

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.180 0.000
C2 -0.035 -1.329 0.000
C3 1.155 -0.409 0.000
C4 -0.847 1.389 0.000
H5 -0.311 -1.867 0.913
H6 -0.311 -1.867 -0.913
H7 2.231 -0.354 0.000
H8 -0.246 2.303 0.000
H9 -1.501 1.400 -0.880
H10 -1.501 1.400 0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50941.29671.47622.26222.26222.29372.13742.12492.1249
C21.50941.50462.83671.09441.09442.46733.63833.22003.2200
C31.29671.50462.69102.25982.25981.07713.05263.33183.3318
C41.47622.83672.69103.42333.42333.53671.09401.09671.0967
H52.26221.09442.25983.42331.82543.09564.26883.91133.4764
H62.26221.09442.25983.42331.82543.09564.26883.47643.9113
H72.29372.46731.07713.53673.09563.09563.63194.21594.2159
H82.13743.63833.05261.09404.26884.26883.63191.77951.7795
H92.12493.22003.33181.09673.91133.47644.21591.77951.7604
H102.12493.22003.33181.09673.47643.91134.21591.77951.7604

picture of 1-Methylcyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C3 50.963 H1 C2 C6 119.790
C2 C3 C6 24.807 C2 C3 C10 72.611
C2 C6 C3 35.228 C2 C6 H4 49.463
C2 C6 H5 33.494 C3 C2 C6 119.966
C3 C6 H4 51.723 C3 C6 H5 66.179
C3 C10 H7 9.415 C3 C10 H8 65.329
C3 C10 H9 74.682 H4 C6 H5 74.538
C6 C3 C10 86.538 H7 C10 H8 58.900
H7 C10 H9 77.949 H8 C10 H9 60.354
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.287      
2 C -0.370      
3 C -0.204      
4 C -0.556      
5 H 0.110      
6 H 0.110      
7 H 0.151      
8 H 0.154      
9 H 0.159      
10 H 0.159      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.130 0.908 0.000 0.917
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.698 -0.576 0.000
y -0.576 7.119 0.000
z 0.000 0.000 4.492


<r2> (average value of r2) Å2
<r2> 80.130
(<r2>)1/2 8.952