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All results from a given calculation for C5H8 (Cyclobutane, methylene-)

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-194.582392
Energy at 298.15K-194.590933
HF Energy-193.941352
Nuclear repulsion energy167.802794
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 MP2/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3205 3022 5.36      
2 A' 3200 3018 35.47      
3 A' 3170 2989 12.65      
4 A' 3133 2955 34.97      
5 A' 3110 2932 8.46      
6 A' 1775 1674 9.29      
7 A' 1563 1474 0.02      
8 A' 1537 1450 2.47      
9 A' 1483 1399 0.68      
10 A' 1298 1224 0.17      
11 A' 1252 1181 0.00      
12 A' 1121 1057 0.28      
13 A' 1006 949 0.36      
14 A' 923 870 0.09      
15 A' 887 836 44.10      
16 A' 773 729 2.12      
17 A' 676 638 1.33      
18 A' 382 360 4.59      
19 A' 121 114 0.13      
20 A" 3295 3107 9.82      
21 A" 3173 2993 14.96      
22 A" 3106 2929 34.61      
23 A" 1526 1439 2.48      
24 A" 1321 1246 0.04      
25 A" 1282 1209 0.22      
26 A" 1245 1174 1.05      
27 A" 1219 1150 2.10      
28 A" 1071 1010 0.16      
29 A" 963 908 1.32      
30 A" 937 884 0.40      
31 A" 839 792 0.22      
32 A" 670 632 0.16      
33 A" 355 335 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 25807.5 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 24336.5 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 MP2/6-31G*
ABC
0.34476 0.15462 0.11696

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.245 -0.388 1.093
C2 0.245 -0.388 -1.093
C3 -0.116 0.605 0.000
C4 0.245 -1.493 0.000
C5 -0.653 1.828 0.000
H6 -0.467 -0.499 1.917
H7 -0.467 -0.499 -1.917
H8 1.242 -0.212 1.515
H9 1.242 -0.212 -1.515
H10 -0.882 2.349 0.926
H11 -0.882 2.349 -0.926
H12 1.095 -2.180 0.000
H13 -0.679 -2.076 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.18511.52061.55352.62891.09493.09441.09632.79672.96543.58332.26402.2128
C22.18511.52061.55352.62893.09441.09492.79671.09633.58332.96542.26402.2128
C31.52061.52062.12911.33472.23972.23972.19262.19262.11772.11773.03752.7398
C41.55351.55352.12913.43972.27352.27352.21952.21954.10974.10971.09311.0932
C52.62892.62891.33473.43973.02023.02023.16933.16931.08711.08714.37223.9038
H61.09493.09442.23972.27353.02023.83331.77873.84403.04414.04532.99012.4910
H73.09441.09492.23972.27353.02023.83333.84401.77874.04533.04412.99012.4910
H81.09632.79672.19262.21953.16931.77873.84403.02933.37934.12662.48723.0752
H92.79671.09632.19262.21953.16933.84401.77873.02934.12663.37932.48723.0752
H102.96543.58332.11774.10971.08713.04414.04533.37934.12661.85175.02804.5255
H113.58332.96542.11774.10971.08714.04533.04414.12663.37931.85175.02804.5255
H122.26402.26403.03751.09314.37222.99012.99012.48722.48725.02805.02801.7779
H132.21282.21282.73981.09323.90382.49102.49103.07523.07524.52554.52551.7779

picture of Cyclobutane, methylene- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C2 91.864 C1 C3 C5 133.954
C1 C4 C2 89.385 C1 C4 H12 116.538
C1 C4 H13 112.286 C2 C3 C5 133.954
C2 C4 H12 116.538 C2 C4 H13 112.286
C3 C1 C4 87.666 C3 C1 H6 116.874
C3 C1 H8 112.824 C3 C2 C4 87.666
C3 C2 H7 116.874 C3 C2 H9 112.824
C3 C5 H10 121.612 C3 C5 H11 121.612
C4 C1 H6 117.227 C4 C1 H8 112.636
C4 C2 H7 117.227 C4 C2 H9 112.636
H6 C1 H8 108.530 H7 C2 H9 108.530
H10 C5 H11 116.775 H12 C4 H13 108.823
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability