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

using model chemistry: PBEPBE/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/6-31G**
 hartrees
Energy at 0K-155.734899
Energy at 298.15K 
HF Energy-155.734899
Nuclear repulsion energy107.575433
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 PBEPBE/6-31G**
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' 3211 3167 0.56 122.94 0.30 0.46
2 A' 3065 3023 15.66 89.45 0.72 0.84
3 A' 2970 2930 17.60 252.86 0.01 0.02
4 A' 2966 2925 86.68 81.44 0.32 0.49
5 A' 1830 1805 10.72 54.87 0.21 0.34
6 A' 1493 1473 9.36 18.58 0.39 0.56
7 A' 1444 1424 9.13 24.89 0.69 0.81
8 A' 1362 1344 0.31 23.81 0.56 0.72
9 A' 1179 1162 0.60 4.66 0.43 0.60
10 A' 1063 1049 16.27 1.51 0.34 0.50
11 A' 1038 1024 23.53 0.14 0.68 0.81
12 A' 964 951 5.60 9.60 0.52 0.68
13 A' 919 906 11.60 9.32 0.67 0.80
14 A' 675 665 0.41 17.08 0.59 0.74
15 A' 312 308 1.90 1.62 0.74 0.85
16 A" 3032 2990 4.51 93.27 0.75 0.86
17 A" 3025 2984 69.26 99.51 0.75 0.86
18 A" 1439 1419 7.52 18.39 0.75 0.86
19 A" 1094 1079 0.34 3.04 0.75 0.86
20 A" 1017 1003 0.83 5.67 0.75 0.86
21 A" 961 948 3.55 11.15 0.75 0.86
22 A" 694 685 24.30 1.23 0.75 0.86
23 A" 289 285 9.95 1.06 0.75 0.86
24 A" 160 158 0.56 0.39 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18099.7 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 17851.7 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 PBEPBE/6-31G**
ABC
0.68301 0.20981 0.17120

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.184 0.000
C2 -0.044 -1.333 0.000
C3 1.161 -0.419 0.000
C4 -0.842 1.398 0.000
H5 -0.328 -1.873 0.920
H6 -0.328 -1.873 -0.920
H7 2.247 -0.373 0.000
H8 -0.236 2.318 0.000
H9 -1.503 1.412 -0.885
H10 -1.503 1.412 0.885

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.51681.30841.47742.27632.27632.31522.14712.13352.1335
C21.51681.51232.84431.10351.10352.48463.65523.23193.2319
C31.30841.51232.70452.27482.27481.08723.07303.35213.3521
C41.47742.84432.70453.43593.43593.56061.10161.10451.1045
H52.27631.10352.27483.43591.83923.11884.29113.92803.4893
H62.27631.10352.27483.43591.83923.11884.29113.48933.9280
H72.31522.48461.08723.56063.11883.11883.66124.24674.2467
H82.14713.65523.07301.10164.29114.29113.66121.79101.7910
H92.13353.23193.35211.10453.92803.48934.24671.79101.7695
H102.13353.23193.35211.10453.48933.92804.24671.79101.7695

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 51.183 H1 C2 C6 119.790
C2 C3 C6 24.838 C2 C3 C10 72.326
C2 C6 C3 35.144 C2 C6 H4 49.418
C2 C6 H5 33.559 C3 C2 C6 120.018
C3 C6 H4 51.804 C3 C6 H5 66.155
C3 C10 H7 9.391 C3 C10 H8 65.388
C3 C10 H9 74.696 H4 C6 H5 74.476
C6 C3 C10 86.309 H7 C10 H8 58.986
H7 C10 H9 77.975 H8 C10 H9 60.396
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.141      
2 C -0.283      
3 C -0.139      
4 C -0.453      
5 H 0.100      
6 H 0.100      
7 H 0.100      
8 H 0.141      
9 H 0.146      
10 H 0.146      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.186 0.924 0.000 0.942
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.156 -0.645 0.000
y -0.645 -24.736 0.000
z 0.000 0.000 -25.206
Traceless
 xyz
x 1.815 -0.645 0.000
y -0.645 -0.555 0.000
z 0.000 0.000 -1.260
Polar
3z2-r2-2.519
x2-y21.580
xy-0.645
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.736 -0.587 0.000
y -0.587 7.135 0.000
z 0.000 0.000 4.334


<r2> (average value of r2) Å2
<r2> 80.816
(<r2>)1/2 8.990