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

using model chemistry: MP2/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-194.752230
Energy at 298.15K-194.760789
HF Energy-193.965078
Nuclear repulsion energy168.138338
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(2df,p)
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' 3213 3035 23.54      
2 A' 3206 3028 2.72      
3 A' 3182 3005 8.29      
4 A' 3140 2965 28.78      
5 A' 3116 2943 6.84      
6 A' 1762 1664 11.33      
7 A' 1522 1437 0.12      
8 A' 1498 1415 2.54      
9 A' 1456 1376 1.11      
10 A' 1271 1200 0.11      
11 A' 1237 1169 0.04      
12 A' 1105 1043 0.30      
13 A' 997 942 0.22      
14 A' 917 866 9.03      
15 A' 913 863 28.19      
16 A' 760 718 2.24      
17 A' 665 628 1.55      
18 A' 386 365 4.29      
19 A' 135 128 0.18      
20 A" 3302 3119 4.69      
21 A" 3185 3008 12.42      
22 A" 3113 2940 27.76      
23 A" 1483 1401 2.32      
24 A" 1296 1225 0.05      
25 A" 1264 1193 0.15      
26 A" 1228 1160 0.69      
27 A" 1193 1126 1.92      
28 A" 1056 998 0.20      
29 A" 948 895 1.06      
30 A" 928 877 0.51      
31 A" 823 778 0.18      
32 A" 663 627 0.16      
33 A" 350 330 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 25656.2 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 24232.3 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(2df,p)
ABC
0.34382 0.15549 0.11795

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.240 -0.412 1.085
C2 0.240 -0.412 -1.085
C3 0.000 0.620 0.000
C4 -0.023 -1.494 0.000
C5 -0.459 1.867 0.000
H6 -0.401 -0.390 1.967
H7 -0.401 -0.390 -1.967
H8 1.286 -0.422 1.405
H9 1.286 -0.422 -1.405
H10 -0.655 2.394 0.926
H11 -0.655 2.394 -0.926
H12 0.616 -2.376 0.000
H13 -1.068 -1.801 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.17041.51681.55442.61941.09043.11851.09332.70092.94963.56642.27512.1955
C22.17041.51681.55442.61943.11851.09042.70091.09333.56642.94962.27512.1955
C31.51681.51682.11351.32892.24692.24692.17092.17092.10542.10543.05872.6463
C41.55441.55442.11353.38862.28642.28642.19902.19904.04574.04571.08931.0900
C52.61942.61941.32893.38862.99422.99423.20273.20271.08301.08304.37713.7183
H61.09043.11852.24692.28642.99423.93301.77843.77042.98314.02252.97412.5105
H73.11851.09042.24692.28642.99423.93303.77041.77844.02252.98312.97412.5105
H81.09332.70092.17092.19903.20271.77843.77042.81043.45304.13842.49883.0692
H92.70091.09332.17092.19903.20273.77041.77842.81044.13843.45302.49883.0692
H102.94963.56642.10544.04571.08302.98314.02253.45304.13841.85155.02244.3158
H113.56642.94962.10544.04571.08304.02252.98314.13843.45301.85155.02244.3158
H122.27512.27513.05871.08934.37712.97412.97412.49882.49885.02245.02241.7794
H132.19552.19552.64631.09003.71832.51052.51053.06923.06924.31584.31581.7794

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 91.364 C1 C3 C5 133.890
C1 C4 C2 88.554 C1 C4 H12 117.680
C1 C4 H13 111.025 C2 C3 C5 133.890
C2 C4 H12 117.680 C2 C4 H13 111.025
C3 C1 C4 86.963 C3 C1 H6 118.120
C3 C1 H8 111.524 C3 C2 C4 86.963
C3 C2 H7 118.120 C3 C2 H9 111.524
C3 C5 H10 121.265 C3 C5 H11 121.265
C4 C1 H6 118.592 C4 C1 H8 111.109
C4 C2 H7 118.592 C4 C2 H9 111.109
H6 C1 H8 109.048 H7 C2 H9 109.048
H10 C5 H11 117.469 H12 C4 H13 109.475
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability