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

using model chemistry: HF/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/daug-cc-pVDZ
 hartrees
Energy at 0K-154.885619
Energy at 298.15K 
HF Energy-154.885619
Nuclear repulsion energy108.530830
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 HF/daug-cc-pVDZ
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' 3436 3134 1.03 95.97 0.31 0.47
2 A' 3251 2965 26.59 77.70 0.73 0.84
3 A' 3167 2889 25.21 282.69 0.00 0.00
4 A' 3167 2888 110.15 95.90 0.26 0.41
5 A' 1996 1820 21.37 83.74 0.10 0.19
6 A' 1629 1486 4.88 7.80 0.31 0.48
7 A' 1580 1441 8.54 8.97 0.55 0.71
8 A' 1509 1376 0.46 2.26 0.71 0.83
9 A' 1281 1169 5.15 8.16 0.51 0.67
10 A' 1179 1075 11.74 7.73 0.10 0.18
11 A' 1166 1063 29.14 1.31 0.42 0.59
12 A' 1047 955 6.68 10.63 0.17 0.29
13 A' 1020 930 17.46 7.63 0.27 0.42
14 A' 726 662 0.68 16.09 0.50 0.67
15 A' 345 314 1.71 1.48 0.74 0.85
16 A" 3231 2946 6.87 72.12 0.75 0.86
17 A" 3226 2942 80.08 119.17 0.75 0.86
18 A" 1577 1438 7.82 5.22 0.75 0.86
19 A" 1195 1090 2.39 0.76 0.75 0.86
20 A" 1132 1032 0.42 2.36 0.75 0.86
21 A" 1055 963 1.48 1.39 0.75 0.86
22 A" 808 737 43.70 2.96 0.75 0.86
23 A" 326 297 14.29 0.64 0.75 0.86
24 A" 176 160 0.32 0.18 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 19611.6 cm-1
Scaled (by 0.912) Zero Point Vibrational Energy (zpe) 17885.8 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 HF/daug-cc-pVDZ
ABC
0.69530 0.21262 0.17365

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.173 0.000
C2 -0.018 -1.329 0.000
C3 1.155 -0.387 0.000
C4 -0.866 1.378 0.000
H5 -0.282 -1.867 0.909
H6 -0.282 -1.867 -0.909
H7 2.225 -0.316 0.000
H8 -0.269 2.288 0.000
H9 -1.510 1.376 -0.880
H10 -1.510 1.376 0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50191.28341.48332.25102.25102.27792.13182.12132.1213
C21.50191.50332.83611.08891.08892.46073.62533.21183.2118
C31.28341.50332.68272.25362.25361.07273.03033.31383.3138
C41.48332.83612.68273.41953.41953.52401.08851.09031.0903
H52.25101.08892.25363.41951.81813.08494.25293.90163.4675
H62.25101.08892.25363.41951.81813.08494.25293.46753.9016
H72.27792.46071.07273.52403.08493.08493.60504.19314.1931
H82.13183.62533.03031.08854.25294.25293.60501.77351.7735
H92.12133.21183.31381.09033.90163.46754.19311.77351.7596
H102.12133.21183.31381.09033.46753.90164.19311.77351.7596

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 50.563 H1 C2 C6 119.797
C2 C3 C6 24.761 C2 C3 C10 72.923
C2 C6 C3 35.324 C2 C6 H4 49.513
C2 C6 H5 33.405 C3 C2 C6 119.915
C3 C6 H4 51.593 C3 C6 H5 66.210
C3 C10 H7 9.456 C3 C10 H8 65.127
C3 C10 H9 74.604 H4 C6 H5 74.583
C6 C3 C10 86.785 H7 C10 H8 58.681
H7 C10 H9 77.888 H8 C10 H9 60.258
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.945      
2 C 1.275      
3 C 1.578      
4 C 0.658      
5 H -0.502      
6 H -0.502      
7 H -0.442      
8 H -0.164      
9 H 0.022      
10 H 0.022      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.158 0.906 0.000 0.920
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.717 -0.639 0.000
y -0.639 -25.582 0.000
z 0.000 0.000 -26.115
Traceless
 xyz
x 2.131 -0.639 0.000
y -0.639 -0.666 0.000
z 0.000 0.000 -1.465
Polar
3z2-r2-2.930
x2-y21.865
xy-0.639
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.423 -0.523 0.000
y -0.523 7.657 0.000
z 0.000 0.000 5.494


<r2> (average value of r2) Å2
<r2> 80.287
(<r2>)1/2 8.960