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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31+G**
 hartrees
Energy at 0K-155.959822
Energy at 298.15K 
HF Energy-155.959822
Nuclear repulsion energy107.933773
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 B3LYPultrafine/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' 3279 3157 0.27 131.44 0.33 0.49
2 A' 3112 2996 20.40 98.65 0.70 0.82
3 A' 3030 2917 71.26 196.09 0.09 0.17
4 A' 3027 2914 43.87 162.06 0.06 0.12
5 A' 1863 1793 16.43 70.57 0.13 0.24
6 A' 1530 1473 7.50 12.39 0.45 0.62
7 A' 1485 1429 10.72 15.56 0.58 0.73
8 A' 1409 1357 0.17 12.34 0.67 0.81
9 A' 1188 1144 2.90 11.18 0.31 0.47
10 A' 1081 1041 2.14 4.83 0.14 0.24
11 A' 1065 1026 43.84 1.82 0.16 0.27
12 A' 977 940 4.76 10.26 0.25 0.41
13 A' 941 906 14.89 6.23 0.47 0.64
14 A' 674 649 0.64 15.23 0.62 0.76
15 A' 322 310 1.91 1.72 0.74 0.85
16 A" 3091 2976 46.36 117.45 0.75 0.86
17 A" 3082 2967 24.32 99.82 0.75 0.86
18 A" 1481 1426 9.38 9.04 0.75 0.86
19 A" 1123 1081 0.75 0.65 0.75 0.86
20 A" 1049 1010 0.28 1.76 0.75 0.86
21 A" 985 949 2.46 3.74 0.75 0.86
22 A" 719 692 38.35 2.02 0.75 0.86
23 A" 295 284 14.73 0.38 0.75 0.86
24 A" 161 155 0.52 0.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18484.7 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 17795.3 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 B3LYPultrafine/6-31+G**
ABC
0.68642 0.21093 0.17206

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.180 0.000
C2 -0.033 -1.334 0.000
C3 1.160 -0.403 0.000
C4 -0.854 1.388 0.000
H5 -0.304 -1.871 0.915
H6 -0.304 -1.871 -0.915
H7 2.238 -0.345 0.000
H8 -0.254 2.304 0.000
H9 -1.507 1.397 -0.881
H10 -1.507 1.397 0.881

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.51371.29831.47952.26582.26582.29872.13942.12792.1279
C21.51371.51342.84271.09481.09482.47693.64433.22513.2251
C31.29831.51342.69512.26622.26621.07933.05433.33603.3360
C41.47952.84272.69513.42913.42913.54441.09451.09701.0970
H52.26581.09482.26623.42911.82953.10264.27413.91743.4817
H62.26581.09482.26623.42911.82953.10264.27413.48173.9174
H72.29872.47691.07933.54443.10263.10263.63734.22334.2233
H82.13943.64433.05431.09454.27414.27413.63731.78041.7804
H92.12793.22513.33601.09703.91743.48174.22331.78041.7619
H102.12793.22513.33601.09703.48173.91744.22331.78041.7619

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 50.796 H1 C2 C6 119.732
C2 C3 C6 24.788 C2 C3 C10 72.608
C2 C6 C3 35.419 C2 C6 H4 49.498
C2 C6 H5 33.333 C3 C2 C6 119.792
C3 C6 H4 51.709 C3 C6 H5 66.194
C3 C10 H7 9.391 C3 C10 H8 65.266
C3 C10 H9 74.688 H4 C6 H5 74.529
C6 C3 C10 86.515 H7 C10 H8 58.865
H7 C10 H9 77.960 H8 C10 H9 60.342
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.191      
2 C -0.337      
3 C -0.078      
4 C -0.655      
5 H 0.127      
6 H 0.127      
7 H 0.130      
8 H 0.163      
9 H 0.166      
10 H 0.166      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.205 0.888 0.000 0.912
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.956 -0.625 0.000
y -0.625 -25.582 0.000
z 0.000 0.000 -26.033
Traceless
 xyz
x 1.852 -0.625 0.000
y -0.625 -0.588 0.000
z 0.000 0.000 -1.264
Polar
3z2-r2-2.528
x2-y21.626
xy-0.625
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.428 -0.608 0.000
y -0.608 7.717 0.000
z 0.000 0.000 5.176


<r2> (average value of r2) Å2
<r2> 80.944
(<r2>)1/2 8.997