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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: PBEPBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/Def2TZVPP
 hartrees
Energy at 0K-157.044005
Energy at 298.15K-157.052473
HF Energy-157.044005
Nuclear repulsion energy123.904105
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 PBEPBE/Def2TZVPP
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' 3152 3114 22.84      
2 A' 3070 3033 17.76      
3 A' 3064 3027 13.18      
4 A' 3025 2988 18.46      
5 A' 2957 2921 35.39      
6 A' 1460 1443 1.25      
7 A' 1448 1430 9.45      
8 A' 1374 1357 4.18      
9 A' 1347 1331 1.98      
10 A' 1204 1190 0.01      
11 A' 1175 1161 0.01      
12 A' 1011 999 5.09      
13 A' 979 967 12.33      
14 A' 913 902 2.43      
15 A' 780 770 5.94      
16 A' 751 742 1.30      
17 A' 353 349 0.18      
18 A" 3137 3099 0.27      
19 A" 3060 3023 25.21      
20 A" 3021 2984 26.16      
21 A" 1440 1422 2.23      
22 A" 1418 1401 3.29      
23 A" 1156 1142 0.70      
24 A" 1098 1084 0.04      
25 A" 1072 1059 4.39      
26 A" 1026 1013 1.42      
27 A" 856 846 7.06      
28 A" 792 783 4.73      
29 A" 336 331 0.69      
30 A" 221 219 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23346.4 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 23063.9 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 PBEPBE/Def2TZVPP
ABC
0.51886 0.21069 0.18506

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.346 0.402 0.000
C2 -0.880 1.287 0.000
H3 1.294 0.944 0.000
C4 0.346 -0.902 0.755
C5 0.346 -0.902 -0.755
H6 1.256 -1.208 1.271
H7 1.256 -1.208 -1.271
H8 -0.573 -1.192 1.265
H9 -0.573 -1.192 -1.265
H10 -1.798 0.682 0.000
H11 -0.906 1.933 0.889
H12 -0.906 1.933 -0.889

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51261.09201.50641.50642.24332.24332.23212.23212.16232.16912.1691
C21.51262.20072.62012.62013.52153.52152.79942.79941.09941.09961.0996
H31.09202.20072.20832.20832.49972.49973.10593.10593.10282.57052.5705
C41.50642.62012.20831.51011.08942.24141.09022.23782.77033.10243.5086
C51.50642.62012.20831.51012.24141.08942.23781.09022.77033.50863.1024
H62.24333.52152.49971.08942.24142.54101.82903.12603.80923.83234.3825
H72.24333.52152.49972.24141.08942.54103.12601.82903.80924.38253.8323
H82.23212.79943.10591.09022.23781.82903.12602.52922.57073.16503.8099
H92.23212.79943.10592.23781.09023.12601.82902.52922.57073.80993.1650
H102.16231.09943.10282.77032.77033.80923.80922.57072.57071.77571.7757
H112.16911.09962.57053.10243.50863.83234.38253.16503.80991.77571.7785
H122.16911.09962.57053.50863.10244.38253.83233.80993.16501.77571.7785

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.761 C1 C2 H11 111.294
C1 C2 H12 111.294 C1 C4 H5 59.918
C1 C4 H6 118.703 C1 C4 H8 117.659
C1 H5 C4 59.918 C1 H5 H7 118.703
C1 H5 H9 117.659 C2 C1 C3 114.363
C2 C1 C4 120.432 C2 C1 H5 120.432
C3 C1 C4 115.477 C3 C1 H5 115.477
C4 C1 H5 60.164 C4 H5 H7 118.240
C4 H5 H9 117.864 H5 C4 H6 118.240
H5 C4 H8 117.864 H6 C4 H8 114.094
H7 H5 H9 114.094 H10 C2 H11 107.699
H10 C2 H12 107.699 H11 C2 H12 107.931
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.006      
2 C -0.233      
3 H 0.067      
4 C -0.163      
5 C -0.163      
6 H 0.073      
7 H 0.073      
8 H 0.066      
9 H 0.066      
10 H 0.066      
11 H 0.078      
12 H 0.078      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.039 0.130 0.000 0.135
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.677 0.222 0.000
y 0.222 -27.655 0.000
z 0.000 0.000 -27.409
Traceless
 xyz
x 1.855 0.222 0.000
y 0.222 -1.112 0.000
z 0.000 0.000 -0.743
Polar
3z2-r2-1.485
x2-y21.978
xy0.222
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.954 -0.562 0.000
y -0.562 7.796 0.000
z 0.000 0.000 7.180


<r2> (average value of r2) Å2
<r2> 84.071
(<r2>)1/2 9.169