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

using model chemistry: HF/TZVP

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/TZVP
 hartrees
Energy at 0K-154.917627
Energy at 298.15K 
HF Energy-154.917627
Nuclear repulsion energy109.080800
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/TZVP
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' 3439 3124 1.38 89.44 0.31 0.48
2 A' 3247 2950 26.90 86.02 0.72 0.84
3 A' 3170 2881 26.03 234.39 0.00 0.00
4 A' 3167 2878 98.74 110.82 0.26 0.41
5 A' 2000 1817 21.45 74.63 0.15 0.26
6 A' 1647 1497 6.05 10.24 0.35 0.52
7 A' 1601 1455 8.36 12.48 0.65 0.79
8 A' 1529 1390 0.38 3.64 0.72 0.84
9 A' 1283 1166 5.70 6.17 0.50 0.67
10 A' 1189 1081 0.62 4.52 0.14 0.24
11 A' 1178 1070 45.76 1.93 0.19 0.32
12 A' 1048 952 3.40 11.00 0.41 0.59
13 A' 1027 933 20.20 10.44 0.26 0.42
14 A' 727 661 0.73 15.77 0.55 0.71
15 A' 349 317 1.69 1.27 0.73 0.84
16 A" 3226 2931 3.61 74.83 0.75 0.86
17 A" 3222 2927 86.19 111.38 0.75 0.86
18 A" 1598 1452 9.07 10.24 0.75 0.86
19 A" 1214 1103 3.12 0.88 0.75 0.86
20 A" 1147 1042 0.54 3.26 0.75 0.86
21 A" 1068 970 1.30 6.43 0.75 0.86
22 A" 833 757 47.90 1.65 0.75 0.86
23 A" 330 300 14.69 1.29 0.75 0.86
24 A" 165 150 0.39 0.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 19701.7 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 17901.0 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/TZVP
ABC
0.70246 0.21457 0.17527

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.172 0.000
C2 0.007 -1.324 0.000
C3 1.154 -0.363 0.000
C4 -0.888 1.355 0.000
H5 -0.245 -1.864 0.904
H6 -0.245 -1.864 -0.904
H7 2.217 -0.273 0.000
H8 -0.314 2.273 0.000
H9 -1.529 1.342 -0.875
H10 -1.529 1.342 0.875

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.49551.27211.47952.24072.24072.26132.12502.11452.1145
C21.49551.49632.82461.08291.08292.44713.61153.19833.1983
C31.27211.49632.66862.24272.24271.06663.01743.29683.2968
C41.47952.82462.66863.40473.40473.50581.08291.08471.0847
H52.24071.08292.24273.40471.80773.06824.23553.88413.4529
H62.24071.08292.24273.40471.80773.06824.23553.45293.8841
H72.26132.44711.06663.50583.06823.06823.58994.17164.1716
H82.12503.61153.01741.08294.23554.23553.58991.76351.7635
H92.11453.19833.29681.08473.88413.45294.17161.76351.7501
H102.11453.19833.29681.08473.45293.88414.17161.76351.7501

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 50.326 H1 C2 C6 119.843
C2 C3 C6 24.730 C2 C3 C10 73.036
C2 C6 C3 35.315 C2 C6 H4 49.524
C2 C6 H5 33.417 C3 C2 C6 119.955
C3 C6 H4 51.532 C3 C6 H5 66.233
C3 C10 H7 9.440 C3 C10 H8 65.218
C3 C10 H9 74.607 H4 C6 H5 74.605
C6 C3 C10 86.851 H7 C10 H8 58.788
H7 C10 H9 77.891 H8 C10 H9 60.251
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.056      
2 C -0.167      
3 C -0.208      
4 C -0.263      
5 H 0.069      
6 H 0.069      
7 H 0.142      
8 H 0.097      
9 H 0.103      
10 H 0.103      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.176 0.888 0.000 0.906
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.667 -0.518 0.000
y -0.518 -25.488 0.000
z 0.000 0.000 -25.946
Traceless
 xyz
x 2.050 -0.518 0.000
y -0.518 -0.681 0.000
z 0.000 0.000 -1.369
Polar
3z2-r2-2.737
x2-y21.821
xy-0.518
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.000 -0.432 0.000
y -0.432 7.155 0.000
z 0.000 0.000 4.916


<r2> (average value of r2) Å2
<r2> 79.624
(<r2>)1/2 8.923