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

using model chemistry: PBE1PBE/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 PBE1PBE/6-311G**
 hartrees
Energy at 0K-155.787818
Energy at 298.15K 
HF Energy-155.787818
Nuclear repulsion energy108.499459
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 PBE1PBE/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' 3291 3158 0.39 114.46 0.31 0.47
2 A' 3134 3007 16.17 90.84 0.72 0.84
3 A' 3042 2919 16.56 269.24 0.01 0.01
4 A' 3039 2916 89.20 93.61 0.32 0.48
5 A' 1890 1813 13.46 60.97 0.20 0.34
6 A' 1519 1458 5.64 13.57 0.36 0.53
7 A' 1476 1416 10.98 16.25 0.63 0.78
8 A' 1396 1340 0.62 10.27 0.64 0.78
9 A' 1214 1165 2.03 6.77 0.49 0.66
10 A' 1095 1051 13.32 3.91 0.23 0.38
11 A' 1072 1029 28.23 0.08 0.73 0.85
12 A' 990 950 10.22 7.94 0.42 0.59
13 A' 946 907 15.17 5.34 0.58 0.73
14 A' 698 670 1.08 14.62 0.61 0.75
15 A' 325 312 2.09 1.44 0.75 0.85
16 A" 3106 2980 3.22 90.60 0.75 0.86
17 A" 3103 2977 69.61 111.49 0.75 0.86
18 A" 1471 1412 10.21 11.09 0.75 0.86
19 A" 1121 1076 0.92 1.84 0.75 0.86
20 A" 1051 1009 0.63 4.24 0.75 0.86
21 A" 988 948 3.16 5.16 0.75 0.86
22 A" 745 714 32.56 0.91 0.75 0.86
23 A" 302 290 13.45 0.91 0.75 0.86
24 A" 163 157 0.51 0.34 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18589.0 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 17834.3 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 PBE1PBE/6-311G**
ABC
0.69328 0.21347 0.17416

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.179 0.000
C2 -0.037 -1.324 0.000
C3 1.152 -0.405 0.000
C4 -0.844 1.382 0.000
H5 -0.309 -1.857 0.915
H6 -0.309 -1.857 -0.915
H7 2.229 -0.353 0.000
H8 -0.243 2.295 0.000
H9 -1.497 1.390 -0.879
H10 -1.497 1.390 0.879

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50331.29181.46972.25362.25362.29122.12972.11652.1165
C21.50331.50332.82381.09331.09332.46513.62453.20433.2043
C31.29181.50332.67942.25452.25451.07753.03903.31843.3184
C41.46972.82382.67943.40833.40833.52871.09261.09521.0952
H52.25361.09332.25453.40831.82953.08884.25213.89523.4575
H62.25361.09332.25453.40831.82953.08884.25213.45753.8952
H72.29122.46511.07753.52873.08883.08883.62224.20584.2058
H82.12973.62453.03901.09264.25214.25213.62221.77871.7787
H92.11653.20433.31841.09523.89523.45754.20581.77871.7590
H102.11653.20433.31841.09523.45753.89524.20581.77871.7590

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 50.892 H1 C2 C6 119.594
C2 C3 C6 24.917 C2 C3 C10 72.476
C2 C6 C3 35.402 C2 C6 H4 49.520
C2 C6 H5 33.204 C3 C2 C6 119.680
C3 C6 H4 51.722 C3 C6 H5 66.062
C3 C10 H7 9.384 C3 C10 H8 65.263
C3 C10 H9 74.631 H4 C6 H5 74.431
C6 C3 C10 86.466 H7 C10 H8 58.884
H7 C10 H9 77.929 H8 C10 H9 60.365
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.025      
2 C -0.224      
3 C -0.173      
4 C -0.330      
5 H 0.117      
6 H 0.117      
7 H 0.096      
8 H 0.137      
9 H 0.142      
10 H 0.142      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.169 0.904 0.000 0.920
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.361 -0.663 0.000
y -0.663 -25.065 0.000
z 0.000 0.000 -25.604
Traceless
 xyz
x 1.974 -0.663 0.000
y -0.663 -0.583 0.000
z 0.000 0.000 -1.391
Polar
3z2-r2-2.782
x2-y21.705
xy-0.663
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.964 -0.561 0.000
y -0.561 7.345 0.000
z 0.000 0.000 4.654


<r2> (average value of r2) Å2
<r2> 79.887
(<r2>)1/2 8.938