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

using model chemistry: B1B95/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-155.815599
Energy at 298.15K 
HF Energy-155.815599
Nuclear repulsion energy108.025564
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 B1B95/6-31G
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' 3357 3201 0.14 104.11 0.28 0.44
2 A' 3162 3016 18.55 87.71 0.73 0.84
3 A' 3099 2955 60.16 135.08 0.14 0.25
4 A' 3062 2920 26.78 176.88 0.02 0.03
5 A' 1893 1806 10.01 48.95 0.20 0.34
6 A' 1570 1498 5.36 16.84 0.41 0.58
7 A' 1530 1459 11.11 27.28 0.70 0.83
8 A' 1460 1393 1.89 20.15 0.59 0.74
9 A' 1228 1171 4.20 4.26 0.48 0.65
10 A' 1132 1079 14.86 0.99 0.38 0.56
11 A' 1117 1066 37.59 1.22 0.23 0.38
12 A' 1012 965 3.70 10.45 0.46 0.63
13 A' 969 924 13.82 9.69 0.61 0.76
14 A' 691 659 0.57 16.60 0.60 0.75
15 A' 333 317 2.01 1.39 0.73 0.85
16 A" 3170 3023 61.14 92.49 0.75 0.86
17 A" 3130 2985 15.16 91.48 0.75 0.86
18 A" 1526 1455 11.25 21.59 0.75 0.86
19 A" 1148 1094 0.06 2.44 0.75 0.86
20 A" 1084 1034 2.88 5.03 0.75 0.86
21 A" 1013 966 3.15 14.45 0.75 0.86
22 A" 764 729 41.36 1.28 0.75 0.86
23 A" 307 293 14.36 1.52 0.75 0.86
24 A" 150 143 0.56 0.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18952.3 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 18074.8 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 B1B95/6-31G
ABC
0.68678 0.21156 0.17240

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.183 0.000
C2 -0.072 -1.335 0.000
C3 1.148 -0.434 0.000
C4 -0.808 1.409 0.000
H5 -0.358 -1.862 0.910
H6 -0.358 -1.862 -0.910
H7 2.220 -0.402 0.000
H8 -0.184 2.304 0.000
H9 -1.461 1.444 -0.879
H10 -1.461 1.444 0.879

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.51951.30301.46872.26662.26662.29612.12962.12022.1202
C21.51951.51682.84091.08941.08942.47513.64113.22813.2281
C31.30301.51682.68762.26612.26611.07303.04503.33203.3320
C41.46872.84092.68763.42483.42483.52911.09191.09471.0947
H52.26661.08942.26613.42481.81903.09964.26823.91673.4849
H62.26661.08942.26613.42481.81903.09964.26823.48493.9167
H72.29612.47511.07303.52913.09963.09963.62034.21074.2107
H82.12963.64113.04501.09194.26824.26823.62031.77291.7729
H92.12023.22813.33201.09473.91673.48494.21071.77291.7570
H102.12023.22813.33201.09473.48493.91674.21071.77291.7570

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 50.827 H1 C2 C6 119.724
C2 C3 C6 24.628 C2 C3 C10 72.840
C2 C6 C3 35.463 C2 C6 H4 49.509
C2 C6 H5 33.402 C3 C2 C6 119.910
C3 C6 H4 51.601 C3 C6 H5 66.338
C3 C10 H7 9.429 C3 C10 H8 65.106
C3 C10 H9 74.712 H4 C6 H5 74.600
C6 C3 C10 86.596 H7 C10 H8 58.655
H7 C10 H9 77.957 H8 C10 H9 60.296
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.039      
2 C -0.340      
3 C -0.149      
4 C -0.536      
5 H 0.143      
6 H 0.143      
7 H 0.163      
8 H 0.175      
9 H 0.181      
10 H 0.181      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.176 0.891 0.000 0.908
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.256 -0.581 0.000
y -0.581 -24.658 0.000
z 0.000 0.000 -25.348
Traceless
 xyz
x 1.747 -0.581 0.000
y -0.581 -0.356 0.000
z 0.000 0.000 -1.391
Polar
3z2-r2-2.781
x2-y21.402
xy-0.581
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.370 -0.469 0.000
y -0.469 6.736 0.000
z 0.000 0.000 4.061


<r2> (average value of r2) Å2
<r2> 80.306
(<r2>)1/2 8.961