return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HSEh1PBE/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-155.775729
Energy at 298.15K 
HF Energy-155.775729
Nuclear repulsion energy108.321880
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/6-31+G**
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' 3308 3158 0.36 124.02 0.32 0.48
2 A' 3149 3007 15.94 94.57 0.71 0.83
3 A' 3051 2913 28.01 307.75 0.01 0.02
4 A' 3050 2912 81.31 54.30 0.68 0.81
5 A' 1891 1806 15.84 73.06 0.14 0.24
6 A' 1531 1462 6.98 12.54 0.45 0.62
7 A' 1481 1414 11.59 15.59 0.58 0.74
8 A' 1404 1340 0.58 12.19 0.68 0.81
9 A' 1215 1160 2.34 10.62 0.35 0.51
10 A' 1097 1048 14.44 7.42 0.16 0.28
11 A' 1081 1032 29.30 0.06 0.74 0.85
12 A' 994 949 10.52 8.65 0.28 0.43
13 A' 948 905 14.75 4.94 0.55 0.71
14 A' 700 668 1.14 14.73 0.60 0.75
15 A' 325 310 2.12 1.50 0.75 0.85
16 A" 3119 2978 0.80 87.36 0.75 0.86
17 A" 3113 2972 63.11 126.14 0.75 0.86
18 A" 1477 1410 10.48 9.22 0.75 0.86
19 A" 1127 1076 0.70 0.67 0.75 0.86
20 A" 1051 1004 0.25 2.53 0.75 0.86
21 A" 988 944 2.94 3.47 0.75 0.86
22 A" 726 693 40.18 1.73 0.75 0.86
23 A" 298 284 15.21 0.38 0.75 0.86
24 A" 161 154 0.57 0.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18642.3 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 17799.6 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/6-31+G**
ABC
0.69180 0.21267 0.17353

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.180 0.000
C2 -0.035 -1.324 0.000
C3 1.156 -0.407 0.000
C4 -0.848 1.383 0.000
H5 -0.310 -1.860 0.914
H6 -0.310 -1.860 -0.914
H7 2.234 -0.355 0.000
H8 -0.249 2.298 0.000
H9 -1.502 1.390 -0.880
H10 -1.502 1.390 0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50431.29691.47192.25742.25742.29752.13272.12002.1200
C21.50431.50362.82631.09501.09502.46743.62833.20813.2081
C31.29691.50362.68742.25842.25841.07903.04853.32723.3272
C41.47192.82632.68743.41263.41263.53891.09361.09621.0962
H52.25741.09502.25843.41261.82793.09454.25843.89943.4625
H62.25741.09502.25843.41261.82793.09454.25843.46253.8994
H72.29752.46741.07903.53893.09453.09453.63464.21664.2166
H82.13273.62833.04851.09364.25844.25843.63461.77971.7797
H92.12003.20813.32721.09623.89943.46254.21661.77971.7600
H102.12003.20813.32721.09623.46253.89944.21661.77971.7600

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 51.081 H1 C2 C6 119.729
C2 C3 C6 24.863 C2 C3 C10 72.316
C2 C6 C3 35.263 C2 C6 H4 49.473
C2 C6 H5 33.424 C3 C2 C6 119.874
C3 C6 H4 51.839 C3 C6 H5 66.128
C3 C10 H7 9.355 C3 C10 H8 65.324
C3 C10 H9 74.664 H4 C6 H5 74.466
C6 C3 C10 86.319 H7 C10 H8 58.968
H7 C10 H9 77.954 H8 C10 H9 60.366
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.150      
2 C -0.353      
3 C -0.069      
4 C -0.725      
5 H 0.143      
6 H 0.143      
7 H 0.156      
8 H 0.183      
9 H 0.186      
10 H 0.186      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.211 0.896 0.000 0.920
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.612 -0.657 0.000
y -0.657 -25.279 0.000
z 0.000 0.000 -25.832
Traceless
 xyz
x 1.943 -0.657 0.000
y -0.657 -0.557 0.000
z 0.000 0.000 -1.386
Polar
3z2-r2-2.772
x2-y21.667
xy-0.657
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.298 -0.600 0.000
y -0.600 7.577 0.000
z 0.000 0.000 5.097


<r2> (average value of r2) Å2
<r2> 80.259
(<r2>)1/2 8.959