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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: CCD/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 CCD/cc-pVDZ
 hartrees
Energy at 0K-156.723907
Energy at 298.15K-156.732525
HF Energy-156.105938
Nuclear repulsion energy123.378058
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 CCD/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' 3264 3123 22.49      
2 A' 3182 3044 15.97      
3 A' 3169 3032 13.54      
4 A' 3141 3005 18.14      
5 A' 3058 2926 31.69      
6 A' 1537 1471 1.11      
7 A' 1500 1435 6.67      
8 A' 1445 1383 1.95      
9 A' 1398 1338 2.56      
10 A' 1245 1191 0.15      
11 A' 1221 1168 0.07      
12 A' 1079 1032 3.18      
13 A' 1017 973 9.36      
14 A' 945 904 1.95      
15 A' 808 773 6.21      
16 A' 778 745 1.06      
17 A' 363 347 0.22      
18 A" 3251 3110 0.19      
19 A" 3161 3024 18.17      
20 A" 3141 3005 28.05      
21 A" 1492 1428 1.62      
22 A" 1468 1404 1.60      
23 A" 1203 1151 0.45      
24 A" 1158 1108 0.22      
25 A" 1116 1068 3.22      
26 A" 1085 1038 0.88      
27 A" 899 860 8.10      
28 A" 824 788 3.69      
29 A" 343 328 0.49      
30 A" 229 219 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24259.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 23209.1 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 CCD/cc-pVDZ
ABC
0.51291 0.20934 0.18394

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.350 0.408 0.000
C2 -0.889 1.284 0.000
H3 1.302 0.955 0.000
C4 0.350 -0.903 0.760
C5 0.350 -0.903 -0.760
H6 1.267 -1.208 1.275
H7 1.267 -1.208 -1.275
H8 -0.577 -1.193 1.268
H9 -0.577 -1.193 -1.268
H10 -1.803 0.662 0.000
H11 -0.922 1.932 0.895
H12 -0.922 1.932 -0.895

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51751.09761.51561.51562.25392.25392.24292.24292.16842.17752.1775
C21.51752.21572.62592.62593.53363.53362.79982.79981.10561.10551.1055
H31.09762.21572.22172.22172.51162.51163.12263.12263.11912.58882.5888
C41.51562.62592.22171.52001.09502.25271.09602.24862.76843.11033.5206
C51.51562.62592.22171.52002.25271.09502.24861.09602.76843.52063.1103
H62.25393.53362.51161.09502.25272.54981.84373.14103.81453.84704.4003
H72.25393.53362.51162.25271.09502.54983.14101.84373.81454.40033.8470
H82.24292.79983.12261.09602.24861.84373.14102.53612.55973.16593.8160
H92.24292.79983.12262.24861.09603.14101.84372.53612.55973.81603.1659
H102.16841.10563.11912.76842.76843.81453.81452.55972.55971.78631.7863
H112.17751.10552.58883.11033.52063.84704.40033.16593.81601.78631.7897
H122.17751.10552.58883.52063.11034.40033.84703.81603.16591.78631.7897

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.534 C1 C2 H11 111.259
C1 C2 H12 111.259 C1 C4 H5 59.904
C1 C4 H6 118.507 C1 C4 H8 117.466
C1 H5 C4 59.904 C1 H5 H7 118.507
C1 H5 H9 117.466 C2 C1 C3 114.888
C2 C1 C4 119.942 C2 C1 H5 119.942
C3 C1 C4 115.532 C3 C1 H5 115.532
C4 C1 H5 60.193 C4 H5 H7 118.051
C4 H5 H9 117.617 H5 C4 H6 118.051
H5 C4 H8 117.617 H6 C4 H8 114.599
H7 H5 H9 114.599 H10 C2 H11 107.777
H10 C2 H12 107.777 H11 C2 H12 108.089
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability