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

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 CS 1A'
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-32.346411
Energy at 298.15K-32.354586
HF Energy-31.946113
Nuclear repulsion energy88.091160
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 A' 3156 3050 110.00      
2 A' 3133 3027 19.26      
3 A' 3120 3015 27.22      
4 A' 3071 2967 63.30      
5 A' 3052 2949 3.81      
6 A' 1699 1642 9.58      
7 A' 1529 1478 0.32      
8 A' 1505 1454 0.74      
9 A' 1455 1406 0.67      
10 A' 1290 1247 0.03      
11 A' 1213 1172 0.03      
12 A' 1078 1042 0.35      
13 A' 948 916 1.45      
14 A' 857 828 0.37      
15 A' 797 770 81.60      
16 A' 763 737 3.47      
17 A' 662 640 0.85      
18 A' 306 296 6.41      
19 A' 39 37 0.00      
20 A" 3227 3118 30.97      
21 A" 3127 3022 0.99      
22 A" 3050 2947 92.07      
23 A" 1498 1448 5.33      
24 A" 1285 1242 0.28      
25 A" 1234 1193 0.90      
26 A" 1219 1178 1.44      
27 A" 1181 1141 6.51      
28 A" 1051 1015 0.00      
29 A" 933 902 1.59      
30 A" 889 859 2.14      
31 A" 831 803 0.05      
32 A" 650 628 0.02      
33 A" 335 324 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25091.7 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 24246.1 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 MP2/CEP-31G
ABC
0.33256 0.14325 0.10659

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.061 -0.447 1.136
C2 0.061 -0.447 -1.136
C3 0.000 0.633 0.000
C4 -0.015 -1.580 0.000
C5 -0.108 2.014 0.000
H6 -0.789 -0.434 1.852
H7 -0.789 -0.434 -1.852
H8 1.013 -0.451 1.709
H9 1.013 -0.451 -1.709
H10 -0.152 2.584 0.942
H11 -0.152 2.584 -0.942
H12 0.832 -2.297 0.000
H13 -0.970 -2.145 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.27271.56871.60682.71581.11093.10681.11163.00063.04393.68092.30462.2889
C22.27271.56871.60682.71583.10681.11093.00061.11163.68093.04392.30462.2889
C31.56871.56872.21331.38522.27852.27852.26362.26362.17152.17153.04632.9431
C41.60681.60682.21333.59552.31152.31152.29162.29164.27134.27131.10961.1099
C52.71582.71581.38523.59553.14463.14463.20263.20261.10201.10204.41274.2481
H61.11093.10682.27852.31153.14463.70401.80813.99113.21554.16183.08692.5282
H73.10681.11092.27852.31153.14463.70403.99111.80814.16183.21553.08692.5282
H81.11163.00062.26362.29163.20261.80813.99113.41793.34034.19522.52213.1182
H93.00061.11162.26362.29163.20263.99111.80813.41794.19523.34032.52213.1182
H103.04393.68092.17154.27131.10203.21554.16183.34034.19521.88485.06764.8909
H113.68093.04392.17154.27131.10204.16183.21554.19523.34031.88485.06764.8909
H122.30462.30463.04631.10964.41273.08693.08692.52212.52215.06765.06761.8082
H132.28892.28892.94311.10994.24812.52822.52823.11823.11824.89094.89091.8082

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 92.832 C1 C3 C5 133.571
C1 C4 C2 90.018 C1 C4 H12 114.849
C1 C4 H13 113.558 C2 C3 C5 133.571
C2 C4 H12 114.849 C2 C4 H13 113.558
C3 C1 C4 88.366 C3 C1 H6 115.424
C3 C1 H8 114.157 C3 C2 C4 88.366
C3 C2 H7 115.424 C3 C2 H9 114.157
C3 C5 H10 121.218 C3 C5 H11 121.218
C4 C1 H6 115.324 C4 C1 H8 113.669
C4 C2 H7 115.324 C4 C2 H9 113.669
H6 C1 H8 108.884 H7 C2 H9 108.884
H10 C5 H11 117.563 H12 C4 H13 109.107
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability