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

using model chemistry: HSEh1PBE/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 HSEh1PBE/3-21G*
 hartrees
Energy at 0K-154.895636
Energy at 298.15K 
HF Energy-154.895636
Nuclear repulsion energy107.869761
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/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' 3343 3209 0.72 86.79 0.29 0.45
2 A' 3147 3021 11.07 79.62 0.72 0.84
3 A' 3102 2978 45.10 109.91 0.14 0.25
4 A' 3056 2934 15.25 153.17 0.02 0.04
5 A' 1861 1786 8.49 42.69 0.21 0.35
6 A' 1563 1500 4.14 14.95 0.44 0.61
7 A' 1544 1482 12.27 29.22 0.71 0.83
8 A' 1460 1401 4.06 22.77 0.56 0.72
9 A' 1202 1153 5.44 3.53 0.47 0.64
10 A' 1115 1070 10.64 1.24 0.35 0.52
11 A' 1085 1042 53.61 0.70 0.38 0.55
12 A' 988 949 0.13 8.51 0.58 0.73
13 A' 952 914 13.40 10.67 0.50 0.67
14 A' 661 634 0.47 15.24 0.61 0.76
15 A' 326 313 2.56 1.43 0.73 0.84
16 A" 3180 3052 41.80 78.30 0.75 0.86
17 A" 3114 2989 8.41 85.12 0.75 0.86
18 A" 1542 1481 11.31 21.74 0.75 0.86
19 A" 1140 1094 0.09 3.05 0.75 0.86
20 A" 1087 1043 4.57 6.16 0.75 0.86
21 A" 1020 979 4.41 13.21 0.75 0.86
22 A" 786 754 42.45 1.28 0.75 0.86
23 A" 314 301 16.64 1.52 0.75 0.86
24 A" 151 145 0.52 0.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18867.8 cm-1
Scaled (by 0.9599) Zero Point Vibrational Energy (zpe) 18111.2 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 HSEh1PBE/3-21G*
ABC
0.68110 0.21148 0.17216

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.182 0.000
C2 -0.073 -1.342 0.000
C3 1.149 -0.428 0.000
C4 -0.811 1.409 0.000
H5 -0.352 -1.858 0.918
H6 -0.352 -1.858 -0.918
H7 2.220 -0.388 0.000
H8 -0.180 2.304 0.000
H9 -1.462 1.435 -0.883
H10 -1.462 1.435 0.883

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.52641.30071.47022.26502.26502.29212.12872.11812.1181
C21.52641.52652.84831.08941.08942.48393.64733.22813.2281
C31.30071.52652.68562.26762.26761.07193.03703.32653.3265
C41.47022.84832.68563.42433.42433.52331.09471.09791.0979
H52.26501.08942.26763.42431.83663.10164.26503.91383.4748
H62.26501.08942.26763.42431.83663.10164.26503.47483.9138
H72.29212.48391.07193.52333.10163.10163.60584.20264.2026
H82.12873.64733.03701.09474.26504.26503.60581.78341.7834
H92.11813.22813.32651.09793.91383.47484.20261.78341.7663
H102.11813.22813.32651.09793.47483.91384.20261.78341.7663

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 50.434 H1 C2 C6 119.014
C2 C3 C6 24.785 C2 C3 C10 72.962
C2 C6 C3 35.973 C2 C6 H4 49.962
C2 C6 H5 32.551 C3 C2 C6 119.242
C3 C6 H4 51.557 C3 C6 H5 66.110
C3 C10 H7 9.477 C3 C10 H8 64.953
C3 C10 H9 74.604 H4 C6 H5 74.444
C6 C3 C10 86.620 H7 C10 H8 58.463
H7 C10 H9 77.869 H8 C10 H9 60.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.011      
2 C -0.392      
3 C -0.191      
4 C -0.765      
5 H 0.206      
6 H 0.206      
7 H 0.204      
8 H 0.236      
9 H 0.244      
10 H 0.244      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.189 0.878 0.000 0.899
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.254 -0.562 0.000
y -0.562 -24.603 0.000
z 0.000 0.000 -25.759
Traceless
 xyz
x 1.927 -0.562 0.000
y -0.562 -0.096 0.000
z 0.000 0.000 -1.831
Polar
3z2-r2-3.661
x2-y21.349
xy-0.562
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.060 -0.475 0.000
y -0.475 6.450 0.000
z 0.000 0.000 3.767


<r2> (average value of r2) Å2
<r2> 80.446
(<r2>)1/2 8.969