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

using model chemistry: B3LYP/3-21G

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/3-21G
 hartrees
Energy at 0K-155.079419
Energy at 298.15K 
HF Energy-155.079419
Nuclear repulsion energy107.552249
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/3-21G
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' 3316 3199 0.17 92.52 0.29 0.45
2 A' 3117 3008 15.04 81.56 0.71 0.83
3 A' 3081 2973 48.68 111.12 0.14 0.25
4 A' 3039 2932 18.63 151.05 0.02 0.04
5 A' 1839 1775 8.74 39.94 0.21 0.34
6 A' 1564 1509 5.11 15.83 0.44 0.61
7 A' 1549 1495 10.42 30.20 0.71 0.83
8 A' 1463 1411 1.65 24.38 0.54 0.71
9 A' 1185 1143 5.34 2.58 0.36 0.53
10 A' 1103 1065 5.46 1.38 0.33 0.50
11 A' 1072 1034 52.96 0.80 0.56 0.72
12 A' 968 934 1.65 8.20 0.69 0.82
13 A' 936 903 9.07 12.10 0.45 0.62
14 A' 637 614 0.19 15.61 0.61 0.76
15 A' 322 311 2.10 1.68 0.72 0.84
16 A" 3155 3044 46.90 79.47 0.75 0.86
17 A" 3085 2976 12.22 85.78 0.75 0.86
18 A" 1547 1493 9.17 22.61 0.75 0.86
19 A" 1136 1097 0.02 2.66 0.75 0.86
20 A" 1083 1045 4.31 5.17 0.75 0.86
21 A" 1014 978 3.21 14.89 0.75 0.86
22 A" 775 748 38.48 1.27 0.75 0.86
23 A" 307 297 14.54 1.53 0.75 0.86
24 A" 148 143 0.45 0.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18720.9 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 18063.8 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/3-21G
ABC
0.67765 0.20982 0.17084

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.182 0.000
C2 -0.072 -1.351 0.000
C3 1.151 -0.425 0.000
C4 -0.814 1.415 0.000
H5 -0.348 -1.869 0.918
H6 -0.348 -1.869 -0.918
H7 2.222 -0.380 0.000
H8 -0.182 2.309 0.000
H9 -1.465 1.443 -0.883
H10 -1.465 1.443 0.883

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.53431.30091.47812.27292.27292.29182.13522.12552.1255
C21.53431.53382.86411.08911.08912.49103.66173.24443.2444
C31.30091.53382.69232.27412.27411.07213.04173.33363.3336
C41.47812.86412.69233.44133.44133.52721.09481.09771.0977
H52.27291.08912.27413.44131.83543.10834.28043.93143.4948
H62.27291.08912.27413.44131.83543.10834.28043.49483.9314
H72.29182.49101.07213.52723.10833.10833.60694.20704.2070
H82.13523.66173.04171.09484.28044.28043.60691.78271.7827
H92.12553.24443.33361.09773.93143.49484.20701.78271.7666
H102.12553.24443.33361.09773.49483.93144.20701.78271.7666

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 50.178 H1 C2 C6 119.114
C2 C3 C6 24.696 C2 C3 C10 73.295
C2 C6 C3 36.043 C2 C6 H4 49.924
C2 C6 H5 32.580 C3 C2 C6 119.261
C3 C6 H4 51.395 C3 C6 H5 66.200
C3 C10 H7 9.525 C3 C10 H8 64.915
C3 C10 H9 74.635 H4 C6 H5 74.534
C6 C3 C10 86.868 H7 C10 H8 58.368
H7 C10 H9 77.880 H8 C10 H9 60.297
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.030      
2 C -0.346      
3 C -0.171      
4 C -0.692      
5 H 0.180      
6 H 0.180      
7 H 0.173      
8 H 0.210      
9 H 0.218      
10 H 0.218      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.166 0.878 0.000 0.894
CHELPG        
AIM        
ESP 0.885 0.232 0.001 0.915


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.424 -0.527 0.000
y -0.527 -24.752 0.000
z 0.000 0.000 -25.751
Traceless
 xyz
x 1.827 -0.527 0.000
y -0.527 -0.164 0.000
z 0.000 0.000 -1.663
Polar
3z2-r2-3.326
x2-y21.327
xy-0.527
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.073 -0.466 0.000
y -0.466 6.492 0.000
z 0.000 0.000 3.773


<r2> (average value of r2) Å2
<r2> 80.970
(<r2>)1/2 8.998