return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C5H8 (Ethenylcyclopropane)

using model chemistry: CCSD=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 CCSD=FULL/cc-pVDZ
 hartrees
Energy at 0K-194.708215
Energy at 298.15K-194.716389
HF Energy-193.954097
Nuclear repulsion energy161.812753
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 CCSD=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' 3270 3270 17.72      
2 A' 3267 3267 14.39      
3 A' 3190 3190 8.31      
4 A' 3178 3178 2.21      
5 A' 3171 3171 13.15      
6 A' 3162 3162 7.94      
7 A' 1734 1734 17.00      
8 A' 1526 1526 1.12      
9 A' 1475 1475 0.11      
10 A' 1367 1367 0.79      
11 A' 1314 1314 3.63      
12 A' 1244 1244 2.23      
13 A' 1232 1232 2.35      
14 A' 1074 1074 1.13      
15 A' 1008 1008 2.54      
16 A' 981 981 30.54      
17 A' 832 832 1.21      
18 A' 771 771 0.23      
19 A' 444 444 0.89      
20 A' 267 267 1.06      
21 A" 3253 3253 0.12      
22 A" 3164 3164 16.49      
23 A" 1467 1467 1.00      
24 A" 1202 1202 0.65      
25 A" 1137 1137 1.36      
26 A" 1081 1081 2.93      
27 A" 1017 1017 10.67      
28 A" 942 942 9.34      
29 A" 917 917 33.40      
30 A" 837 837 5.17      
31 A" 673 673 4.25      
32 A" 315 315 0.86      
33 A" 117 117 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 25314.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 25314.2 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 CCSD=FULL/cc-pVDZ
ABC
0.49813 0.10050 0.09668

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.394 0.292 0.000
C2 0.258 -1.046 0.000
C3 -0.401 -2.220 0.000
C4 0.258 1.441 0.756
C5 0.258 1.441 -0.756
H6 -1.489 0.272 0.000
H7 1.358 -1.045 0.000
H8 0.135 -3.174 0.000
H9 -1.497 -2.260 0.000
H10 -0.398 2.146 1.275
H11 1.203 1.233 1.269
H12 -0.398 2.146 -1.275
H13 1.203 1.233 -1.269

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.48782.51171.52231.52231.09592.20383.50612.77992.25022.24622.25022.2462
C21.48781.34692.59902.59902.18891.10002.13232.13453.49892.77383.49892.7738
C32.51171.34693.79603.79602.71942.11581.09471.09664.54834.01314.54834.0131
C41.52232.59903.79601.51142.23442.82174.67854.16531.09411.09502.24742.2440
C51.52232.59903.79601.51142.23442.82174.67854.16532.24742.24401.09411.0950
H61.09592.18892.71942.23442.23443.13773.81012.53202.51553.12762.51553.1276
H72.20381.10002.11582.82172.82173.13772.45563.10313.85912.61223.85912.6122
H83.50612.13231.09474.67854.67853.81012.45561.87085.49684.70885.49684.7088
H92.77992.13451.09664.16534.16532.53203.10311.87084.71644.59334.71644.5933
H102.25023.49894.54831.09412.24742.51553.85915.49684.71641.84292.54973.1414
H112.24622.77384.01311.09502.24403.12762.61224.70884.59331.84293.14142.5384
H122.25023.49894.54832.24741.09412.51553.85915.49684.71642.54973.14141.8429
H132.24622.77384.01312.24401.09503.12762.61224.70884.59333.14142.53841.8429

picture of Ethenylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 124.684 C1 C2 H7 115.966
C1 C4 C5 60.236 C1 C4 H10 117.709
C1 C4 H11 117.299 C1 C5 C4 60.236
C1 C5 H12 117.709 C1 C5 H13 117.299
C2 C1 C4 119.398 C2 C1 C5 119.398
C2 C1 H6 114.972 C2 C3 H8 121.345
C2 C3 H9 121.405 C3 C2 H7 119.350
C4 C1 H6 116.218 C4 C5 H12 118.324
C4 C5 H13 117.964 C5 C1 H6 116.218
C5 C4 H10 118.324 C5 C4 H11 117.964
H8 C3 H9 117.250 H10 C4 H11 114.674
H12 C5 H13 114.674
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability