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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-157.217018
Energy at 298.15K-157.225627
HF Energy-157.217018
Nuclear repulsion energy124.521445
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' 3240 3099 26.91      
2 A' 3161 3024 19.23      
3 A' 3149 3013 13.91      
4 A' 3114 2980 21.00      
5 A' 3043 2911 35.30      
6 A' 1523 1457 1.69      
7 A' 1502 1437 10.58      
8 A' 1433 1371 4.04      
9 A' 1396 1335 1.45      
10 A' 1247 1193 0.03      
11 A' 1217 1164 0.00      
12 A' 1060 1014 5.83      
13 A' 1013 970 14.02      
14 A' 946 905 3.23      
15 A' 808 773 7.29      
16 A' 780 746 1.49      
17 A' 364 348 0.21      
18 A" 3225 3085 0.26      
19 A" 3144 3007 25.25      
20 A" 3112 2977 30.76      
21 A" 1493 1429 2.58      
22 A" 1467 1404 4.51      
23 A" 1199 1147 0.75      
24 A" 1144 1095 0.13      
25 A" 1112 1064 5.71      
26 A" 1071 1025 1.75      
27 A" 891 853 8.56      
28 A" 822 786 5.35      
29 A" 345 330 0.77      
30 A" 225 215 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24122.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 23078.0 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 mPW1PW91/6-311G**
ABC
0.52429 0.21256 0.18676

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 0.346 0.402 0.000
C2 -0.878 1.279 0.000
H3 1.289 0.940 0.000
C4 0.346 -0.897 0.752
C5 0.346 -0.897 -0.752
H6 1.250 -1.201 1.264
H7 1.250 -1.201 -1.264
H8 -0.570 -1.185 1.256
H9 -0.570 -1.185 -1.256
H10 -1.789 0.675 0.000
H11 -0.908 1.922 0.884
H12 -0.908 1.922 -0.884

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.50511.08561.50151.50152.23272.23272.22142.22142.15232.15892.1589
C21.50512.19302.60732.60733.50353.50352.78252.78251.09341.09351.0935
H31.08562.19302.19782.19782.48602.48603.08973.08973.08952.56312.5631
C41.50152.60732.19781.50421.08292.23061.08392.22582.75603.08793.4921
C51.50152.60732.19781.50422.23061.08292.22581.08392.75603.49213.0879
H62.23273.50352.48601.08292.23062.52811.82023.10893.78873.81444.3611
H72.23273.50352.48602.23061.08292.52813.10891.82023.78874.36113.8144
H82.22142.78253.08971.08392.22581.82023.10892.51262.55423.14703.7875
H92.22142.78253.08972.22581.08393.10891.82022.51262.55423.78753.1470
H102.15231.09343.08952.75602.75603.78873.78872.55422.55421.76461.7646
H112.15891.09352.56313.08793.49213.81444.36113.14703.78751.76461.7679
H122.15891.09352.56313.49213.08794.36113.81443.78753.14701.76461.7679

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.852 C1 C2 H11 111.377
C1 C2 H12 111.377 C1 C4 H5 59.939
C1 C4 H6 118.629 C1 C4 H8 117.552
C1 H5 C4 59.939 C1 H5 H7 118.629
C1 H5 H9 117.552 C2 C1 C3 114.699
C2 C1 C4 120.268 C2 C1 H5 120.268
C3 C1 C4 115.379 C3 C1 H5 115.379
C4 C1 H5 60.121 C4 H5 H7 118.215
C4 H5 H9 117.722 H5 C4 H6 118.215
H5 C4 H8 117.722 H6 C4 H8 114.297
H7 H5 H9 114.297 H10 C2 H11 107.592
H10 C2 H12 107.592 H11 C2 H12 107.873
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 -0.239      
2 C -0.283      
3 H 0.133      
4 C -0.250      
5 C -0.250      
6 H 0.135      
7 H 0.135      
8 H 0.134      
9 H 0.134      
10 H 0.106      
11 H 0.122      
12 H 0.122      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.025 0.121 0.000 0.124
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.180 0.196 0.000
y 0.196 -27.211 0.000
z 0.000 0.000 -26.989
Traceless
 xyz
x 1.920 0.196 0.000
y 0.196 -1.127 0.000
z 0.000 0.000 -0.793
Polar
3z2-r2-1.587
x2-y22.031
xy0.196
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.243 -0.472 0.000
y -0.472 6.877 0.000
z 0.000 0.000 6.364


<r2> (average value of r2) Å2
<r2> 83.150
(<r2>)1/2 9.119