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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-157.204928
Energy at 298.15K-157.213530
HF Energy-157.204928
Nuclear repulsion energy124.484834
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 mPW1PW91/6-311G*
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' 3239 3091 36.42      
2 A' 3161 3017 22.95      
3 A' 3149 3005 18.12      
4 A' 3115 2973 23.20      
5 A' 3046 2907 39.69      
6 A' 1536 1466 1.37      
7 A' 1520 1450 11.76      
8 A' 1446 1380 4.41      
9 A' 1408 1344 1.48      
10 A' 1254 1196 0.03      
11 A' 1225 1169 0.01      
12 A' 1063 1014 5.00      
13 A' 1014 968 15.07      
14 A' 952 908 3.35      
15 A' 810 773 6.95      
16 A' 783 748 2.08      
17 A' 365 348 0.21      
18 A" 3223 3076 0.32      
19 A" 3143 3000 31.65      
20 A" 3113 2971 35.84      
21 A" 1513 1444 3.09      
22 A" 1481 1414 4.52      
23 A" 1210 1155 0.80      
24 A" 1149 1097 0.12      
25 A" 1120 1069 5.40      
26 A" 1070 1021 1.91      
27 A" 893 852 8.71      
28 A" 827 790 5.74      
29 A" 345 329 0.83      
30 A" 223 213 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24195.9 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 23092.6 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 mPW1PW91/6-311G*
ABC
0.52429 0.21236 0.18658

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.345 0.402 0.000
C2 -0.877 1.280 0.000
H3 1.289 0.939 0.000
C4 0.345 -0.898 0.752
C5 0.345 -0.898 -0.752
H6 1.250 -1.202 1.265
H7 1.250 -1.202 -1.265
H8 -0.569 -1.188 1.258
H9 -0.569 -1.188 -1.258
H10 -1.792 0.681 0.000
H11 -0.906 1.924 0.883
H12 -0.906 1.924 -0.883

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.50461.08631.50181.50182.23382.23382.22382.22382.15502.15952.1595
C21.50462.19252.60812.60813.50443.50442.78682.78681.09351.09351.0935
H31.08632.19252.19832.19832.48702.48703.09193.09193.09162.56342.5634
C41.50182.60812.19831.50401.08352.23151.08442.22732.76143.08993.4935
C51.50182.60812.19831.50402.23151.08352.22731.08442.76143.49353.0899
H62.23383.50442.48701.08352.23152.53041.81923.11083.79423.81634.3628
H72.23383.50442.48702.23151.08352.53043.11081.81923.79424.36283.8163
H82.22382.78683.09191.08442.22731.81923.11082.51642.56313.15203.7922
H92.22382.78683.09192.22731.08443.11081.81922.51642.56313.79223.1520
H102.15501.09353.09162.76142.76143.79423.79422.56312.56311.76291.7629
H112.15951.09352.56343.08993.49353.81634.36283.15203.79221.76291.7667
H122.15951.09352.56343.49353.08994.36283.81633.79223.15201.76291.7667

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 111.094 C1 C2 H11 111.459
C1 C2 H12 111.459 C1 C4 H5 59.952
C1 C4 H6 118.653 C1 C4 H8 117.692
C1 H5 C4 59.952 C1 H5 H7 118.653
C1 H5 H9 117.692 C2 C1 C3 114.643
C2 C1 C4 120.343 C2 C1 H5 120.343
C3 C1 C4 115.356 C3 C1 H5 115.356
C4 C1 H5 60.095 C4 H5 H7 118.271
C4 H5 H9 117.827 H5 C4 H6 118.271
H5 C4 H8 117.827 H6 C4 H8 114.095
H7 H5 H9 114.095 H10 C2 H11 107.431
H10 C2 H12 107.431 H11 C2 H12 107.762
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.235      
2 C -0.650      
3 H 0.217      
4 C -0.449      
5 C -0.449      
6 H 0.228      
7 H 0.228      
8 H 0.226      
9 H 0.226      
10 H 0.210      
11 H 0.224      
12 H 0.224      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.037 0.109 0.000 0.115
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.186 0.245 0.000
y 0.245 -27.335 0.000
z 0.000 0.000 -27.048
Traceless
 xyz
x 2.005 0.245 0.000
y 0.245 -1.218 0.000
z 0.000 0.000 -0.787
Polar
3z2-r2-1.575
x2-y22.149
xy0.245
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.146 -0.457 0.000
y -0.457 6.775 0.000
z 0.000 0.000 6.281


<r2> (average value of r2) Å2
<r2> 83.258
(<r2>)1/2 9.125