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All results from a given calculation for C5H8 (Spiropentane)

using model chemistry: MP2/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-32.313555
Energy at 298.15K-32.322117
HF Energy-31.909859
Nuclear repulsion energy89.419006
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 MP2/CEP-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3136 3030 0.00      
2 A1 1522 1470 0.00      
3 A1 1125 1087 0.00      
4 A1 1029 994 0.00      
5 A1 568 549 0.00      
6 A2 3230 3121 0.00      
7 A2 1158 1119 0.00      
8 A2 836 807 0.00      
9 B1 3236 3127 0.00      
10 B1 1188 1148 0.00      
11 B1 1039 1004 0.00      
12 B1 288 279 0.00      
13 B2 3136 3031 51.56      
14 B2 1587 1534 0.50      
15 B2 1452 1403 1.35      
16 B2 1089 1052 23.00      
17 B2 855 826 27.57      
18 E 3251 3142 54.10      
18 E 3251 3142 54.10      
19 E 3129 3023 37.96      
19 E 3129 3023 37.96      
20 E 1490 1440 1.18      
20 E 1490 1440 1.18      
21 E 1191 1151 6.07      
21 E 1191 1151 6.07      
22 E 1104 1067 3.27      
22 E 1104 1067 3.27      
23 E 873 844 8.32      
23 E 873 844 8.32      
24 E 799 772 2.59      
24 E 799 772 2.59      
25 E 301 291 0.59      
25 E 301 291 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 25374.9 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 24519.7 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 MP2/CEP-31G
ABC
0.32992 0.13052 0.13052

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.000 0.797 1.311
C3 0.000 -0.797 1.311
C4 -0.797 0.000 -1.311
C5 0.797 0.000 -1.311
H6 0.930 1.301 1.620
H7 -0.930 1.301 1.620
H8 -0.930 -1.301 1.620
H9 0.930 -1.301 1.620
H10 -1.301 -0.930 -1.620
H11 -1.301 0.930 -1.620
H12 1.301 0.930 -1.620
H13 1.301 -0.930 -1.620

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.53401.53401.53401.53402.27602.27602.27602.27602.27602.27602.27602.2760
C21.53401.59382.85342.85341.10201.10202.31522.31523.64163.20883.20883.6416
C31.53401.59382.85342.85342.31522.31521.10201.10203.20883.64163.64163.2088
C41.53402.85342.85341.59383.64163.20883.20883.64161.10201.10202.31522.3152
C51.53402.85342.85341.59383.20883.64163.64163.20882.31522.31521.10201.1020
H62.27601.10202.31523.64163.20881.86023.19802.60134.52173.95053.28133.9505
H72.27601.10202.31523.20883.64161.86022.60133.19803.95053.28133.95054.5217
H82.27602.31521.10203.20883.64163.19802.60131.86023.28133.95054.52173.9505
H92.27602.31521.10203.64163.20882.60133.19801.86023.95054.52173.95053.2813
H102.27603.64163.20881.10202.31524.52173.95053.28133.95051.86023.19802.6013
H112.27603.20883.64161.10202.31523.95053.28133.95054.52171.86022.60133.1980
H122.27603.20883.64162.31521.10203.28133.95054.52173.95053.19802.60131.8602
H132.27603.64163.20882.31521.10203.95054.52173.95053.28132.60133.19801.8602

picture of Spiropentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 58.701 C1 C2 H6 118.491
C1 C2 H7 118.491 C1 C3 C2 58.701
C1 C3 H8 118.491 C1 C3 H9 118.491
C1 C4 C5 58.701 C1 C4 H10 118.491
C1 C4 H11 118.491 C1 C5 C4 58.701
C1 C5 H12 118.491 C1 C5 H13 118.491
C2 C1 C3 62.598 C2 C1 C4 136.896
C2 C1 C5 136.896 C2 C3 H8 117.203
C2 C3 H9 117.203 C3 C1 C4 136.896
C3 C1 C5 136.896 C3 C2 H6 117.203
C3 C2 H7 117.203 C4 C1 C5 62.598
C4 C5 H12 117.203 C4 C5 H13 117.203
C5 C4 H10 117.203 C5 C4 H11 117.203
H6 C2 H7 115.142 H8 C3 H9 115.142
H10 C4 H11 115.142 H12 C5 H13 115.142
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability