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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: HSEh1PBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HSEh1PBE/3-21G
 hartrees
Energy at 0K-156.166365
Energy at 298.15K-156.175017
HF Energy-156.166365
Nuclear repulsion energy124.004508
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 HSEh1PBE/3-21G
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' 3280 3160 14.51      
2 A' 3202 3085 10.52      
3 A' 3184 3067 7.22      
4 A' 3127 3012 17.92      
5 A' 3056 2944 26.04      
6 A' 1563 1506 9.94      
7 A' 1534 1478 4.50      
8 A' 1465 1411 7.76      
9 A' 1415 1363 0.53      
10 A' 1251 1205 0.46      
11 A' 1220 1175 0.02      
12 A' 1082 1042 29.41      
13 A' 1013 976 1.64      
14 A' 967 932 7.88      
15 A' 811 781 2.94      
16 A' 783 755 6.13      
17 A' 372 358 0.21      
18 A" 3263 3143 0.16      
19 A" 3178 3062 14.55      
20 A" 3126 3011 23.31      
21 A" 1556 1498 3.09      
22 A" 1511 1456 7.18      
23 A" 1215 1170 0.96      
24 A" 1176 1133 2.39      
25 A" 1137 1095 8.47      
26 A" 1109 1068 3.00      
27 A" 876 843 2.44      
28 A" 846 815 12.69      
29 A" 355 342 1.48      
30 A" 227 219 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 24448.9 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 23551.6 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 HSEh1PBE/3-21G
ABC
0.51276 0.21266 0.18678

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.355 0.419 0.000
C2 -0.901 1.257 0.000
H3 1.289 0.974 0.000
C4 0.355 -0.893 0.761
C5 0.355 -0.893 -0.761
H6 1.266 -1.194 1.265
H7 1.266 -1.194 -1.265
H8 -0.564 -1.172 1.264
H9 -0.564 -1.172 -1.264
H10 -1.789 0.614 0.000
H11 -0.947 1.898 0.889
H12 -0.947 1.898 -0.889

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.50971.08601.51651.51652.24312.24312.23052.23052.15292.16192.1619
C21.50972.20732.60342.60343.50743.50742.75912.75911.09701.09681.0968
H31.08602.20732.22172.22172.51032.51033.10443.10443.09852.57732.5773
C41.51652.60342.22171.52161.08392.24161.08462.24112.72853.08263.4938
C51.51652.60342.22171.52162.24161.08392.24111.08462.72853.49383.0826
H62.24313.50742.51031.08392.24162.53031.83043.12193.76833.82114.3702
H72.24313.50742.51032.24161.08392.53033.12191.83043.76834.37023.8211
H82.23052.75913.10441.08462.24111.83043.12192.52782.50723.11693.7694
H92.23052.75913.10442.24111.08463.12191.83042.52782.50723.76943.1169
H102.15291.09703.09852.72852.72853.76833.76832.50722.50721.77451.7745
H112.16191.09682.57733.08263.49383.82114.37023.11693.76941.77451.7776
H122.16191.09682.57733.49383.08264.37023.82113.76943.11691.77451.7776

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.356 C1 C2 H11 111.090
C1 C2 H12 111.090 C1 C4 H5 59.890
C1 C4 H6 118.271 C1 C4 H8 117.103
C1 H5 C4 59.890 C1 H5 H7 118.271
C1 H5 H9 117.103 C2 C1 C3 115.538
C2 C1 C4 118.698 C2 C1 H5 118.698
C3 C1 C4 116.247 C3 C1 H5 116.247
C4 C1 H5 60.220 C4 H5 H7 117.731
C4 H5 H9 117.637 H5 C4 H6 117.731
H5 C4 H8 117.637 H6 C4 H8 115.150
H7 H5 H9 115.150 H10 C2 H11 107.966
H10 C2 H12 107.966 H11 C2 H12 108.255
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.295      
2 C -0.608      
3 H 0.225      
4 C -0.429      
5 C -0.429      
6 H 0.225      
7 H 0.225      
8 H 0.223      
9 H 0.223      
10 H 0.206      
11 H 0.216      
12 H 0.216      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.002 0.103 0.000 0.103
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.942 0.122 0.000
y 0.122 -27.065 0.000
z 0.000 0.000 -26.899
Traceless
 xyz
x 2.040 0.122 0.000
y 0.122 -1.145 0.000
z 0.000 0.000 -0.896
Polar
3z2-r2-1.791
x2-y22.123
xy0.122
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.453 -0.382 0.000
y -0.382 5.824 0.000
z 0.000 0.000 5.513


<r2> (average value of r2) Å2
<r2> 83.215
(<r2>)1/2 9.122