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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: PBEPBEultrafine/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/TZVP
 hartrees
Energy at 0K-157.036222
Energy at 298.15K-157.044701
HF Energy-157.036222
Nuclear repulsion energy123.804305
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 PBEPBEultrafine/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' 3151 3115 23.27      
2 A' 3070 3035 19.22      
3 A' 3063 3028 12.77      
4 A' 3025 2991 18.84      
5 A' 2957 2923 35.31      
6 A' 1463 1446 1.32      
7 A' 1452 1435 10.47      
8 A' 1376 1360 4.52      
9 A' 1350 1334 1.80      
10 A' 1205 1192 0.00      
11 A' 1177 1163 0.00      
12 A' 1010 999 7.94      
13 A' 979 968 13.05      
14 A' 915 904 3.09      
15 A' 780 771 6.11      
16 A' 754 745 2.00      
17 A' 356 351 0.23      
18 A" 3136 3100 0.31      
19 A" 3059 3024 25.99      
20 A" 3023 2988 27.45      
21 A" 1443 1426 2.54      
22 A" 1420 1404 3.89      
23 A" 1158 1145 0.92      
24 A" 1100 1088 0.02      
25 A" 1073 1061 4.84      
26 A" 1024 1013 2.20      
27 A" 854 844 7.80      
28 A" 796 787 5.17      
29 A" 333 330 0.84      
30 A" 219 217 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23358.8 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 23092.5 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 PBEPBEultrafine/TZVP
ABC
0.51802 0.21036 0.18477

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.347 0.404 0.000
C2 -0.881 1.285 0.000
H3 1.297 0.946 0.000
C4 0.347 -0.902 0.757
C5 0.347 -0.902 -0.757
H6 1.257 -1.209 1.273
H7 1.257 -1.209 -1.273
H8 -0.575 -1.191 1.264
H9 -0.575 -1.191 -1.264
H10 -1.799 0.678 0.000
H11 -0.911 1.933 0.890
H12 -0.911 1.933 -0.890

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51101.09371.50991.50992.24762.24762.23472.23472.16342.17082.1708
C21.51102.20392.62022.62023.52323.52322.79712.79711.10131.10141.1014
H31.09372.20392.21192.21192.50332.50333.11003.11003.10782.57712.5771
C41.50992.62022.21191.51311.09072.24531.09172.24002.77043.10503.5121
C51.50992.62022.21191.51312.24531.09072.24001.09172.77043.51213.1050
H62.24763.52322.50331.09072.24532.54571.83303.12993.81083.83694.3879
H72.24763.52322.50332.24531.09072.54573.12991.83303.81084.38793.8369
H82.23472.79713.11001.09172.24001.83303.12992.52842.56673.16453.8099
H92.23472.79713.11002.24001.09173.12991.83302.52842.56673.80993.1645
H102.16341.10133.10782.77042.77043.81083.81082.56672.56671.77701.7770
H112.17081.10142.57713.10503.51213.83694.38793.16453.80991.77701.7804
H122.17081.10142.57713.51213.10504.38793.83693.80993.16451.77701.7804

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.845 C1 C2 H11 111.427
C1 C2 H12 111.427 C1 C4 H5 59.930
C1 C4 H6 118.711 C1 C4 H8 117.504
C1 H5 C4 59.930 C1 H5 H7 118.711
C1 H5 H9 117.504 C2 C1 C3 114.629
C2 C1 C4 120.307 C2 C1 H5 120.307
C3 C1 C4 115.392 C3 C1 H5 115.392
C4 C1 H5 60.139 C4 H5 H7 118.254
C4 H5 H9 117.712 H5 C4 H6 118.254
H5 C4 H8 117.712 H6 C4 H8 114.261
H7 H5 H9 114.261 H10 C2 H11 107.556
H10 C2 H12 107.556 H11 C2 H12 107.845
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.101      
2 C -0.352      
3 H 0.158      
4 C -0.310      
5 C -0.310      
6 H 0.145      
7 H 0.145      
8 H 0.137      
9 H 0.137      
10 H 0.106      
11 H 0.123      
12 H 0.123      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.031 0.143 0.000 0.146
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.603 0.192 0.000
y 0.192 -27.666 0.000
z 0.000 0.000 -27.440
Traceless
 xyz
x 1.950 0.192 0.000
y 0.192 -1.144 0.000
z 0.000 0.000 -0.806
Polar
3z2-r2-1.611
x2-y22.063
xy0.192
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.833 -0.522 0.000
y -0.522 7.622 0.000
z 0.000 0.000 7.050


<r2> (average value of r2) Å2
<r2> 84.172
(<r2>)1/2 9.175