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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: TPSSh/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 TPSSh/TZVP
 hartrees
Energy at 0K-157.279887
Energy at 298.15K-157.288452
HF Energy-157.279887
Nuclear repulsion energy124.241371
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 TPSSh/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' 3212 3095 30.77      
2 A' 3134 3020 21.03      
3 A' 3124 3010 16.11      
4 A' 3083 2971 24.66      
5 A' 3018 2908 39.89      
6 A' 1520 1465 1.31      
7 A' 1512 1457 7.69      
8 A' 1429 1377 3.17      
9 A' 1398 1347 2.92      
10 A' 1234 1190 0.01      
11 A' 1210 1167 0.01      
12 A' 1050 1012 8.38      
13 A' 1001 965 9.36      
14 A' 939 905 3.07      
15 A' 795 766 5.55      
16 A' 769 741 2.21      
17 A' 352 339 0.24      
18 A" 3196 3080 0.29      
19 A" 3119 3006 30.67      
20 A" 3078 2966 35.70      
21 A" 1505 1450 1.91      
22 A" 1479 1425 2.07      
23 A" 1201 1157 0.76      
24 A" 1142 1100 0.00      
25 A" 1113 1073 4.02      
26 A" 1067 1029 1.63      
27 A" 875 843 8.89      
28 A" 815 786 4.81      
29 A" 337 325 0.70      
30 A" 224 216 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23963.6 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 23093.8 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 TPSSh/TZVP
ABC
0.52172 0.21150 0.18585

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.347 0.404 0.000
C2 -0.883 1.281 0.000
H3 1.290 0.943 0.000
C4 0.347 -0.899 0.754
C5 0.347 -0.899 -0.754
H6 1.253 -1.203 1.266
H7 1.253 -1.203 -1.266
H8 -0.569 -1.188 1.258
H9 -0.569 -1.188 -1.258
H10 -1.792 0.672 0.000
H11 -0.912 1.924 0.885
H12 -0.912 1.924 -0.885

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51071.08611.50581.50582.23682.23682.22592.22592.15572.16322.1632
C21.51072.19892.61462.61463.51173.51172.78852.78851.09411.09451.0945
H31.08612.19892.20282.20282.49142.49143.09483.09483.09362.56782.5678
C41.50582.61462.20281.50871.08362.23471.08452.22972.75933.09403.4992
C51.50582.61462.20281.50872.23471.08362.22971.08452.75933.49923.0940
H62.23683.51172.49141.08362.23472.53171.82213.11273.79313.82174.3691
H72.23683.51172.49142.23471.08362.53173.11271.82213.79314.36913.8217
H82.22592.78853.09481.08452.22971.82213.11272.51572.55663.15253.7938
H92.22592.78853.09482.22971.08453.11271.82212.51572.55663.79383.1525
H102.15571.09413.09362.75932.75933.79313.79312.55662.55661.76781.7678
H112.16321.09452.56783.09403.49923.82174.36913.15253.79381.76781.7708
H122.16321.09452.56783.49923.09404.36913.82173.79383.15251.76781.7708

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.682 C1 C2 H11 111.261
C1 C2 H12 111.261 C1 C4 H5 59.937
C1 C4 H6 118.597 C1 C4 H8 117.562
C1 H5 C4 59.937 C1 H5 H7 118.597
C1 H5 H9 117.562 C2 C1 C3 114.737
C2 C1 C4 120.171 C2 C1 H5 120.171
C3 C1 C4 115.444 C3 C1 H5 115.444
C4 C1 H5 60.127 C4 H5 H7 118.169
C4 H5 H9 117.667 H5 C4 H6 118.169
H5 C4 H8 117.667 H6 C4 H8 114.372
H7 H5 H9 114.372 H10 C2 H11 107.748
H10 C2 H12 107.748 H11 C2 H12 107.987
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.083      
2 C -0.299      
3 H 0.141      
4 C -0.287      
5 C -0.287      
6 H 0.131      
7 H 0.131      
8 H 0.124      
9 H 0.124      
10 H 0.092      
11 H 0.106      
12 H 0.106      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.032 0.134 0.000 0.138
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.592 -0.497 0.000
y -0.497 7.361 0.000
z 0.000 0.000 6.821


<r2> (average value of r2) Å2
<r2> 83.557
(<r2>)1/2 9.141