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

using model chemistry: PBEPBEultrafine/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBEultrafine/6-311+G(3df,2p)
 hartrees
Energy at 0K-155.779138
Energy at 298.15K 
HF Energy-155.779138
Nuclear repulsion energy107.953390
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 PBEPBEultrafine/6-311+G(3df,2p)
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' 3189 3189 0.34 136.71 0.30 0.46
2 A' 3036 3036 16.03 91.72 0.69 0.82
3 A' 2952 2952 34.98 356.23 0.02 0.03
4 A' 2951 2951 73.24 67.51 0.46 0.63
5 A' 1811 1811 15.18 77.29 0.13 0.23
6 A' 1471 1471 4.89 9.74 0.38 0.55
7 A' 1428 1428 11.81 11.97 0.50 0.67
8 A' 1349 1349 0.56 11.77 0.45 0.62
9 A' 1160 1160 1.66 10.98 0.35 0.51
10 A' 1046 1046 5.67 5.84 0.13 0.23
11 A' 1026 1026 32.02 2.00 0.47 0.64
12 A' 954 954 6.49 7.24 0.19 0.32
13 A' 909 909 13.91 3.82 0.52 0.68
14 A' 665 665 0.81 14.28 0.59 0.74
15 A' 314 314 1.98 2.10 0.75 0.86
16 A" 3011 3011 38.36 118.63 0.75 0.86
17 A" 3004 3004 22.01 96.50 0.75 0.86
18 A" 1423 1423 9.02 5.69 0.75 0.86
19 A" 1085 1085 1.11 0.51 0.75 0.86
20 A" 1012 1012 0.12 1.81 0.75 0.86
21 A" 954 954 2.74 0.64 0.75 0.86
22 A" 696 696 32.12 1.48 0.75 0.86
23 A" 289 289 13.05 0.13 0.75 0.86
24 A" 162 162 0.47 0.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17947.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17947.3 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 PBEPBEultrafine/6-311+G(3df,2p)
ABC
0.68550 0.21160 0.17252

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.181 0.000
C2 -0.044 -1.330 0.000
C3 1.157 -0.412 0.000
C4 -0.841 1.391 0.000
H5 -0.320 -1.865 0.919
H6 -0.320 -1.865 -0.919
H7 2.240 -0.363 0.000
H8 -0.236 2.307 0.000
H9 -1.499 1.403 -0.883
H10 -1.499 1.403 0.883

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.51231.30011.47322.26592.26592.30502.13942.12592.1259
C21.51231.51212.83561.09871.09872.48023.64303.22003.2200
C31.30011.51212.69082.26692.26691.08383.05523.33583.3358
C41.47322.83562.69083.42303.42303.54491.09831.10121.1012
H52.26591.09872.26693.42301.83873.10714.27343.91373.4744
H62.26591.09872.26693.42301.83873.10714.27343.47443.9137
H72.30502.48021.08383.54493.10713.10713.64154.22824.2282
H82.13943.64303.05521.09834.27344.27343.64151.78691.7869
H92.12593.22003.33581.10123.91373.47444.22821.78691.7651
H102.12593.22003.33581.10123.47443.91374.22821.78691.7651

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 50.919 H1 C2 C6 119.577
C2 C3 C6 24.902 C2 C3 C10 72.428
C2 C6 C3 35.416 C2 C6 H4 49.515
C2 C6 H5 33.200 C3 C2 C6 119.682
C3 C6 H4 51.716 C3 C6 H5 66.075
C3 C10 H7 9.395 C3 C10 H8 65.273
C3 C10 H9 74.658 H4 C6 H5 74.420
C6 C3 C10 86.400 H7 C10 H8 58.877
H7 C10 H9 77.952 H8 C10 H9 60.402
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.101      
2 C -0.484      
3 C -0.021      
4 C -0.347      
5 H 0.116      
6 H 0.116      
7 H 0.155      
8 H 0.115      
9 H 0.125      
10 H 0.125      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.201 0.910 0.000 0.932
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.870 -0.696 0.000
y -0.696 -25.477 0.000
z 0.000 0.000 -25.977
Traceless
 xyz
x 1.857 -0.696 0.000
y -0.696 -0.554 0.000
z 0.000 0.000 -1.303
Polar
3z2-r2-2.606
x2-y21.607
xy-0.696
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.914 -0.711 0.000
y -0.711 8.398 0.000
z 0.000 0.000 5.747


<r2> (average value of r2) Å2
<r2> 80.780
(<r2>)1/2 8.988