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

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-155.945296
Energy at 298.15K 
HF Energy-155.945296
Nuclear repulsion energy108.536452
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 mPW1PW91/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3297 3154 0.29 113.18 0.31 0.47
2 A' 3137 3001 17.31 89.97 0.72 0.84
3 A' 3046 2915 17.33 275.41 0.00 0.01
4 A' 3044 2912 91.10 82.08 0.38 0.55
5 A' 1889 1807 13.64 60.34 0.20 0.34
6 A' 1525 1459 5.72 13.32 0.36 0.53
7 A' 1482 1418 10.79 16.11 0.64 0.78
8 A' 1403 1342 0.47 10.07 0.64 0.78
9 A' 1212 1160 2.23 6.69 0.48 0.65
10 A' 1095 1048 11.35 3.67 0.22 0.36
11 A' 1075 1028 30.68 0.12 0.58 0.74
12 A' 990 947 9.03 8.21 0.42 0.59
13 A' 948 907 15.16 5.54 0.57 0.72
14 A' 696 666 1.02 14.68 0.60 0.75
15 A' 326 312 2.08 1.44 0.74 0.85
16 A" 3109 2975 14.44 93.77 0.75 0.86
17 A" 3106 2972 60.22 104.92 0.75 0.86
18 A" 1478 1414 9.93 11.06 0.75 0.86
19 A" 1124 1076 0.92 1.83 0.75 0.86
20 A" 1054 1009 0.66 4.03 0.75 0.86
21 A" 991 948 3.04 5.33 0.75 0.86
22 A" 747 715 32.64 0.95 0.75 0.86
23 A" 303 290 13.57 0.94 0.75 0.86
24 A" 162 155 0.50 0.34 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18619.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 17813.3 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 mPW1PW91/6-311G**
ABC
0.69393 0.21350 0.17419

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.179 0.000
C2 -0.036 -1.325 0.000
C3 1.152 -0.404 0.000
C4 -0.845 1.382 0.000
H5 -0.308 -1.858 0.914
H6 -0.308 -1.858 -0.914
H7 2.227 -0.350 0.000
H8 -0.245 2.293 0.000
H9 -1.496 1.390 -0.879
H10 -1.496 1.390 0.879

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50381.29071.47012.25292.25292.28852.12882.11592.1159
C21.50381.50352.82471.09181.09182.46393.62413.20483.2048
C31.29071.50352.67852.25352.25351.07603.03713.31673.3167
C41.47012.82472.67853.40853.40853.52591.09121.09381.0938
H52.25291.09182.25353.40851.82713.08684.25083.89483.4582
H62.25291.09182.25353.40851.82713.08684.25083.45823.8948
H72.28852.46391.07603.52593.08683.08683.61874.20214.2021
H82.12883.62413.03711.09124.25084.25083.61871.77621.7762
H92.11593.20483.31671.09383.89483.45824.20211.77621.7570
H102.11593.20483.31671.09383.45823.89484.20211.77621.7570

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 50.834 H1 C2 C6 119.602
C2 C3 C6 24.892 C2 C3 C10 72.553
C2 C6 C3 35.423 C2 C6 H4 49.530
C2 C6 H5 33.203 C3 C2 C6 119.685
C3 C6 H4 51.697 C3 C6 H5 66.084
C3 C10 H7 9.393 C3 C10 H8 65.259
C3 C10 H9 74.641 H4 C6 H5 74.453
C6 C3 C10 86.513 H7 C10 H8 58.868
H7 C10 H9 77.933 H8 C10 H9 60.357
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.029      
2 C -0.219      
3 C -0.173      
4 C -0.320      
5 H 0.116      
6 H 0.116      
7 H 0.094      
8 H 0.135      
9 H 0.140      
10 H 0.140      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.168 0.902 0.000 0.918
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.313 -0.656 0.000
y -0.656 -25.004 0.000
z 0.000 0.000 -25.544
Traceless
 xyz
x 1.961 -0.656 0.000
y -0.656 -0.576 0.000
z 0.000 0.000 -1.385
Polar
3z2-r2-2.771
x2-y21.691
xy-0.656
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.943 -0.558 0.000
y -0.558 7.323 0.000
z 0.000 0.000 4.634


<r2> (average value of r2) Å2
<r2> 79.826
(<r2>)1/2 8.935