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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: HF/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 HF/6-311G**
 hartrees
Energy at 0K-156.134782
Energy at 298.15K-156.143620
HF Energy-156.134782
Nuclear repulsion energy124.705538
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 HF/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' 3348 3042 47.98      
2 A' 3276 2976 19.95      
3 A' 3263 2965 24.95      
4 A' 3214 2920 32.79      
5 A' 3154 2865 44.16      
6 A' 1646 1495 1.38      
7 A' 1616 1468 7.67      
8 A' 1552 1410 2.73      
9 A' 1505 1367 2.24      
10 A' 1324 1203 0.06      
11 A' 1294 1176 0.03      
12 A' 1165 1058 4.44      
13 A' 1062 965 9.65      
14 A' 1012 919 4.42      
15 A' 850 773 3.85      
16 A' 820 745 6.32      
17 A' 389 353 0.18      
18 A" 3331 3027 0.31      
19 A" 3255 2957 34.67      
20 A" 3209 2916 50.36      
21 A" 1608 1461 1.70      
22 A" 1586 1441 2.43      
23 A" 1299 1180 0.39      
24 A" 1254 1139 0.40      
25 A" 1201 1091 4.60      
26 A" 1187 1078 0.44      
27 A" 936 850 12.49      
28 A" 886 805 6.69      
29 A" 367 333 0.54      
30 A" 238 216 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25422.0 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 23095.9 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 HF/6-311G**
ABC
0.52725 0.21224 0.18646

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.345 0.398 0.000
C2 -0.879 1.284 0.000
H3 1.281 0.934 0.000
C4 0.345 -0.899 0.752
C5 0.345 -0.899 -0.752
H6 1.245 -1.199 1.259
H7 1.245 -1.199 -1.259
H8 -0.562 -1.189 1.254
H9 -0.562 -1.189 -1.254
H10 -1.789 0.690 0.000
H11 -0.900 1.922 0.879
H12 -0.900 1.922 -0.879

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51151.07801.49851.49852.22392.22392.21632.21632.15432.15582.1558
C21.51152.18822.61292.61293.50203.50202.79032.79031.08651.08691.0869
H31.07802.18822.19022.19022.47712.47713.07763.07763.07952.55052.5505
C41.49852.61292.19021.50311.07592.22311.07672.21992.76483.08613.4882
C51.49852.61292.19021.50312.22311.07592.21991.07672.76483.48823.0861
H62.22393.50202.47711.07592.22312.51801.80703.09503.78953.80654.3494
H72.22393.50202.47712.22311.07592.51803.09501.80703.78954.34943.8065
H82.21632.79033.07761.07672.21991.80703.09502.50742.57043.15173.7872
H92.21632.79033.07762.21991.07673.09501.80702.50742.57043.78723.1517
H102.15431.08653.07952.76482.76483.78953.78952.57042.57041.75591.7559
H112.15581.08692.55053.08613.48823.80654.34943.15173.78721.75591.7585
H122.15581.08692.55053.48823.08614.34943.80653.78723.15171.75591.7585

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.985 C1 C2 H11 111.075
C1 C2 H12 111.075 C1 C4 H5 59.898
C1 C4 H6 118.583 C1 C4 H8 117.842
C1 H5 C4 59.898 C1 H5 H7 118.583
C1 H5 H9 117.842 C2 C1 C3 114.314
C2 C1 C4 120.470 C2 C1 H5 120.470
C3 C1 C4 115.467 C3 C1 H5 115.467
C4 C1 H5 60.203 C4 H5 H7 118.143
C4 H5 H9 117.798 H5 C4 H6 118.143
H5 C4 H8 117.798 H6 C4 H8 114.160
H7 H5 H9 114.160 H10 C2 H11 107.786
H10 C2 H12 107.786 H11 C2 H12 107.987
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.210      
2 C -0.184      
3 H 0.104      
4 C -0.204      
5 C -0.204      
6 H 0.111      
7 H 0.111      
8 H 0.108      
9 H 0.108      
10 H 0.076      
11 H 0.092      
12 H 0.092      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.032 0.126 0.000 0.130
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.561 0.264 0.000
y 0.264 -27.527 0.000
z 0.000 0.000 -27.262
Traceless
 xyz
x 1.834 0.264 0.000
y 0.264 -1.115 0.000
z 0.000 0.000 -0.718
Polar
3z2-r2-1.436
x2-y21.966
xy0.264
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.961 -0.402 0.000
y -0.402 6.585 0.000
z 0.000 0.000 6.167


<r2> (average value of r2) Å2
<r2> 83.312
(<r2>)1/2 9.128