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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-155.813024
Energy at 298.15K 
HF Energy-155.813024
Nuclear repulsion energy108.754558
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 HSEh1PBE/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' 3284 3284 0.55 117.07 0.29 0.46
2 A' 3124 3124 14.85 82.74 0.70 0.82
3 A' 3035 3035 17.08 318.74 0.01 0.01
4 A' 3034 3034 87.23 71.02 0.44 0.61
5 A' 1882 1882 15.57 75.40 0.12 0.22
6 A' 1522 1522 4.16 8.70 0.38 0.55
7 A' 1475 1475 11.59 10.58 0.51 0.68
8 A' 1398 1398 0.49 7.91 0.50 0.66
9 A' 1209 1209 2.31 9.84 0.38 0.55
10 A' 1096 1096 9.98 7.43 0.15 0.26
11 A' 1077 1077 27.68 1.14 0.58 0.73
12 A' 990 990 8.86 7.26 0.18 0.30
13 A' 948 948 14.23 3.81 0.48 0.65
14 A' 697 697 1.09 13.79 0.56 0.72
15 A' 325 325 1.98 1.75 0.75 0.86
16 A" 3095 3095 12.42 92.48 0.75 0.86
17 A" 3092 3092 46.13 104.96 0.75 0.86
18 A" 1470 1470 9.55 5.33 0.75 0.86
19 A" 1123 1123 1.18 0.50 0.75 0.86
20 A" 1052 1052 0.26 2.18 0.75 0.86
21 A" 987 987 2.71 0.73 0.75 0.86
22 A" 741 741 34.51 1.62 0.75 0.86
23 A" 303 303 13.40 0.20 0.75 0.86
24 A" 164 164 0.45 0.21 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18561.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18561.0 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 HSEh1PBE/6-311+G(3df,2p)
ABC
0.69665 0.21446 0.17496

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.178 0.000
C2 -0.031 -1.320 0.000
C3 1.151 -0.400 0.000
C4 -0.848 1.375 0.000
H5 -0.303 -1.855 0.912
H6 -0.303 -1.855 -0.912
H7 2.226 -0.343 0.000
H8 -0.254 2.290 0.000
H9 -1.500 1.381 -0.877
H10 -1.500 1.381 0.877

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.49891.28831.46682.24852.24852.28592.12692.11342.1134
C21.49891.49892.81651.09121.09122.45983.61713.19753.1975
C31.28831.49892.67332.25032.25031.07593.03463.31223.3122
C41.46682.81652.67333.40013.40013.52101.09031.09321.0932
H52.24851.09122.25033.40011.82353.08424.24393.88623.4503
H62.24851.09122.25033.40011.82353.08424.24393.45033.8862
H72.28592.45981.07593.52103.08423.08423.61654.19794.1979
H82.12693.61713.03461.09034.24394.24393.61651.77431.7743
H92.11343.19753.31221.09323.88623.45034.19791.77431.7541
H102.11343.19753.31221.09323.45033.88624.19791.77431.7541

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 50.904 H1 C2 C6 119.658
C2 C3 C6 24.878 C2 C3 C10 72.453
C2 C6 C3 35.301 C2 C6 H4 49.504
C2 C6 H5 33.324 C3 C2 C6 119.820
C3 C6 H4 51.730 C3 C6 H5 66.098
C3 C10 H7 9.395 C3 C10 H8 65.306
C3 C10 H9 74.646 H4 C6 H5 74.446
C6 C3 C10 86.416 H7 C10 H8 58.913
H7 C10 H9 77.941 H8 C10 H9 60.376
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.122      
2 C -0.523      
3 C -0.031      
4 C -0.355      
5 H 0.121      
6 H 0.121      
7 H 0.163      
8 H 0.120      
9 H 0.130      
10 H 0.130      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.190 0.906 0.000 0.926
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.531 -0.673 0.000
y -0.673 -25.229 0.000
z 0.000 0.000 -25.758
Traceless
 xyz
x 1.962 -0.673 0.000
y -0.673 -0.584 0.000
z 0.000 0.000 -1.378
Polar
3z2-r2-2.755
x2-y21.698
xy-0.673
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.561 -0.648 0.000
y -0.648 7.948 0.000
z 0.000 0.000 5.539


<r2> (average value of r2) Å2
<r2> 79.702
(<r2>)1/2 8.928