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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: MP3=FULL/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-156.730118
Energy at 298.15K-156.738744
HF Energy-156.106265
Nuclear repulsion energy123.527934
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/cc-pVDZ
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' 3288 3092 21.41      
2 A' 3207 3016 15.98      
3 A' 3192 3002 11.89      
4 A' 3163 2975 18.56      
5 A' 3081 2897 30.72      
6 A' 1540 1448 1.22      
7 A' 1504 1414 7.11      
8 A' 1448 1362 2.16      
9 A' 1400 1317 2.57      
10 A' 1248 1173 0.14      
11 A' 1224 1150 0.06      
12 A' 1078 1014 3.41      
13 A' 1020 959 9.63      
14 A' 947 891 1.99      
15 A' 811 762 6.42      
16 A' 780 734 1.02      
17 A' 363 341 0.24      
18 A" 3275 3079 0.21      
19 A" 3184 2994 17.16      
20 A" 3165 2976 27.32      
21 A" 1496 1407 1.73      
22 A" 1472 1384 1.78      
23 A" 1205 1133 0.49      
24 A" 1159 1089 0.19      
25 A" 1119 1052 3.49      
26 A" 1083 1018 0.91      
27 A" 901 847 8.28      
28 A" 825 776 3.82      
29 A" 343 323 0.50      
30 A" 230 216 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24374.6 cm-1
Scaled (by 0.9403) Zero Point Vibrational Energy (zpe) 22919.5 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/cc-pVDZ
ABC
0.51380 0.20987 0.18438

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.350 0.409 0.000
C2 -0.889 1.282 0.000
H3 1.300 0.954 0.000
C4 0.350 -0.902 0.760
C5 0.350 -0.902 -0.760
H6 1.265 -1.206 1.273
H7 1.265 -1.206 -1.273
H8 -0.575 -1.190 1.266
H9 -0.575 -1.190 -1.266
H10 -1.800 0.659 0.000
H11 -0.924 1.928 0.893
H12 -0.924 1.928 -0.893

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51601.09501.51471.51472.25092.25092.23962.23962.16502.17452.1745
C21.51602.21352.62292.62293.52883.52882.79462.79461.10341.10311.1031
H31.09502.21352.21882.21882.50802.50803.11723.11723.11412.58632.5863
C41.51472.62292.21881.51951.09252.24991.09372.24562.76353.10603.5159
C51.51472.62292.21881.51952.24991.09252.24561.09372.76353.51593.1060
H62.25093.52882.50801.09252.24992.54581.84083.13583.80753.84194.3940
H72.25093.52882.50802.24991.09252.54583.13581.84083.80754.39403.8419
H82.23962.79463.11721.09372.24561.84083.13582.53142.55373.15973.8086
H92.23962.79463.11722.24561.09373.13581.84082.53142.55373.80863.1597
H102.16501.10343.11412.76352.76353.80753.80752.55372.55371.78251.7825
H112.17451.10312.58633.10603.51593.84194.39403.15973.80861.78251.7860
H122.17451.10312.58633.51593.10604.39403.84193.80863.15971.78251.7860

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.500 C1 C2 H11 111.272
C1 C2 H12 111.272 C1 C4 H5 59.895
C1 C4 H6 118.486 C1 C4 H8 117.410
C1 H5 C4 59.895 C1 H5 H7 118.486
C1 H5 H9 117.410 C2 C1 C3 114.979
C2 C1 C4 119.867 C2 C1 H5 119.867
C3 C1 C4 115.527 C3 C1 H5 115.527
C4 C1 H5 60.210 C4 H5 H7 118.015
C4 H5 H9 117.557 H5 C4 H6 118.015
H5 C4 H8 117.557 H6 C4 H8 114.707
H7 H5 H9 114.707 H10 C2 H11 107.772
H10 C2 H12 107.772 H11 C2 H12 108.108
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability