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

using model chemistry: B3LYP/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/cc-pVQZ
 hartrees
Energy at 0K-156.015878
Energy at 298.15K 
HF Energy-156.015878
Nuclear repulsion energy108.508633
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 B3LYP/cc-pVQZ
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' 3264 3162 0.24 123.84 0.30 0.46
2 A' 3094 2997 18.40 88.20 0.70 0.82
3 A' 3021 2927 77.81 214.61 0.09 0.16
4 A' 3017 2923 32.56 195.93 0.03 0.07
5 A' 1858 1800 15.59 67.02 0.15 0.27
6 A' 1526 1478 5.43 12.64 0.31 0.47
7 A' 1482 1436 9.96 12.10 0.56 0.72
8 A' 1408 1364 0.24 8.36 0.47 0.64
9 A' 1185 1148 2.87 7.70 0.38 0.55
10 A' 1085 1051 1.68 2.97 0.10 0.18
11 A' 1063 1030 38.82 1.29 0.29 0.45
12 A' 975 945 3.13 8.59 0.27 0.43
13 A' 943 914 14.89 5.69 0.44 0.61
14 A' 673 652 0.58 14.77 0.58 0.73
15 A' 324 314 1.78 1.89 0.75 0.86
16 A" 3079 2983 47.49 114.60 0.75 0.86
17 A" 3064 2968 18.04 87.84 0.75 0.86
18 A" 1478 1432 8.02 6.58 0.75 0.86
19 A" 1124 1089 1.28 0.88 0.75 0.86
20 A" 1054 1021 0.43 2.25 0.75 0.86
21 A" 988 957 2.26 2.46 0.75 0.86
22 A" 735 712 31.61 0.80 0.75 0.86
23 A" 300 291 12.23 0.38 0.75 0.86
24 A" 163 158 0.38 0.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18450.8 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 17875.2 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 B3LYP/cc-pVQZ
ABC
0.69320 0.21319 0.17388

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.177 0.000
C2 -0.029 -1.329 0.000
C3 1.153 -0.395 0.000
C4 -0.853 1.379 0.000
H5 -0.295 -1.863 0.911
H6 -0.295 -1.863 -0.911
H7 2.225 -0.330 0.000
H8 -0.259 2.292 0.000
H9 -1.504 1.385 -0.877
H10 -1.504 1.385 0.877

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50661.28751.47332.25372.25372.28272.13062.11872.1187
C21.50661.50702.83041.08881.08882.46573.62853.21113.2111
C31.28751.50702.67762.25472.25471.07393.03543.31623.3162
C41.47332.83042.67763.41303.41303.52091.08941.09201.0920
H52.25371.08882.25473.41301.82193.08724.25383.89953.4658
H62.25371.08882.25473.41301.82193.08724.25383.46583.8995
H72.28272.46571.07393.52093.08723.08723.61264.19754.1975
H82.13063.62853.03541.08944.25384.25383.61261.77221.7722
H92.11873.21113.31621.09203.89953.46584.19751.77221.7533
H102.11873.21113.31621.09203.46583.89954.19751.77221.7533

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 50.581 H1 C2 C6 119.660
C2 C3 C6 24.797 C2 C3 C10 72.790
C2 C6 C3 35.484 C2 C6 H4 49.536
C2 C6 H5 33.216 C3 C2 C6 119.719
C3 C6 H4 51.586 C3 C6 H5 66.171
C3 C10 H7 9.435 C3 C10 H8 65.232
C3 C10 H9 74.672 H4 C6 H5 74.520
C6 C3 C10 86.647 H7 C10 H8 58.789
H7 C10 H9 77.945 H8 C10 H9 60.352
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.018      
2 C -0.115      
3 C -0.233      
4 C -0.194      
5 H 0.061      
6 H 0.061      
7 H 0.116      
8 H 0.088      
9 H 0.098      
10 H 0.098      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.173 0.902 0.000 0.918
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.831 -0.628 0.000
y -0.628 -25.502 0.000
z 0.000 0.000 -25.838
Traceless
 xyz
x 1.840 -0.628 0.000
y -0.628 -0.668 0.000
z 0.000 0.000 -1.172
Polar
3z2-r2-2.344
x2-y21.671
xy-0.628
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.552 -0.594 0.000
y -0.594 7.973 0.000
z 0.000 0.000 5.421


<r2> (average value of r2) Å2
<r2> 80.182
(<r2>)1/2 8.954