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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: MP3=FULL/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 MP3=FULL/TZVP
 hartrees
Energy at 0K-156.855679
Energy at 298.15K-156.864373
HF Energy-156.145875
Nuclear repulsion energy124.562960
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 MP3=FULL/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' 3289 3071 25.79      
2 A' 3214 3000 16.63      
3 A' 3196 2984 10.15      
4 A' 3150 2942 24.05      
5 A' 3076 2872 31.01      
6 A' 1558 1455 1.25      
7 A' 1536 1434 7.57      
8 A' 1465 1368 3.14      
9 A' 1428 1334 2.06      
10 A' 1265 1181 0.05      
11 A' 1242 1160 0.09      
12 A' 1112 1039 8.74      
13 A' 1026 958 7.63      
14 A' 971 906 2.39      
15 A' 823 768 2.48      
16 A' 795 742 5.82      
17 A' 376 351 0.27      
18 A" 3275 3058 0.28      
19 A" 3189 2978 20.49      
20 A" 3152 2943 30.72      
21 A" 1525 1424 1.49      
22 A" 1508 1408 2.16      
23 A" 1237 1155 0.69      
24 A" 1192 1113 0.01      
25 A" 1144 1068 3.74      
26 A" 1123 1048 0.76      
27 A" 898 839 10.09      
28 A" 860 803 5.23      
29 A" 355 332 0.53      
30 A" 221 207 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24600.4 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 22969.4 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 MP3=FULL/TZVP
ABC
0.52279 0.21295 0.18710

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.349 0.405 0.000
C2 -0.886 1.273 0.000
H3 1.286 0.945 0.000
C4 0.349 -0.894 0.754
C5 0.349 -0.894 -0.754
H6 1.253 -1.198 1.259
H7 1.253 -1.198 -1.259
H8 -0.567 -1.181 1.253
H9 -0.567 -1.181 -1.253
H10 -1.784 0.654 0.000
H11 -0.918 1.912 0.884
H12 -0.918 1.912 -0.884

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.50871.08171.50271.50272.23002.23002.21832.21832.14722.15722.1572
C21.50872.19632.60582.60583.50213.50212.77322.77321.09111.09071.0907
H31.08172.19632.19782.19782.48522.48523.08513.08513.08392.56362.5636
C41.50272.60582.19781.50901.07932.22811.08052.22432.74163.08123.4872
C51.50272.60582.19781.50902.22811.07932.22431.08052.74163.48723.0812
H62.23003.50212.48521.07932.22812.51801.82003.10163.77373.81074.3557
H72.23003.50212.48522.22811.07932.51803.10161.82003.77374.35573.8107
H82.21832.77323.08511.08052.22431.82003.10162.50502.53333.13383.7746
H92.21832.77323.08512.22431.08053.10161.82002.50502.53333.77463.1338
H102.14721.09113.08392.74162.74163.77373.77372.53332.53331.76431.7643
H112.15721.09072.56363.08123.48723.81074.35573.13383.77461.76431.7674
H122.15721.09072.56363.48723.08124.35573.81073.77463.13381.76431.7674

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.330 C1 C2 H11 111.151
C1 C2 H12 111.151 C1 C4 H5 59.862
C1 C4 H6 118.543 C1 C4 H8 117.411
C1 H5 C4 59.862 C1 H5 H7 118.543
C1 H5 H9 117.411 C2 C1 C3 114.961
C2 C1 C4 119.838 C2 C1 H5 119.838
C3 C1 C4 115.552 C3 C1 H5 115.552
C4 C1 H5 60.277 C4 H5 H7 117.867
C4 H5 H9 117.446 H5 C4 H6 117.867
H5 C4 H8 117.446 H6 C4 H8 114.839
H7 H5 H9 114.839 H10 C2 H11 107.927
H10 C2 H12 107.927 H11 C2 H12 108.231
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability