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

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-194.704187
Energy at 298.15K-194.712655
HF Energy-193.974841
Nuclear repulsion energy167.040787
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 QCISD/6-311G*
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' 3136 3003 8.14      
2 A' 3131 2998 55.68      
3 A' 3104 2972 14.35      
4 A' 3072 2941 40.62      
5 A' 3052 2922 11.91      
6 A' 1763 1687 16.31      
7 A' 1538 1473 0.10      
8 A' 1509 1445 2.93      
9 A' 1451 1390 1.38      
10 A' 1280 1226 0.13      
11 A' 1238 1185 0.06      
12 A' 1101 1054 1.11      
13 A' 990 948 0.66      
14 A' 904 865 0.01      
15 A' 863 826 46.31      
16 A' 756 724 1.44      
17 A' 667 638 1.60      
18 A' 371 355 6.27      
19 A' 109 104 0.12      
20 A" 3221 3084 14.76      
21 A" 3108 2976 18.23      
22 A" 3049 2919 47.09      
23 A" 1498 1434 4.81      
24 A" 1299 1244 0.00      
25 A" 1263 1210 0.33      
26 A" 1221 1169 0.75      
27 A" 1206 1155 2.40      
28 A" 1056 1011 0.14      
29 A" 945 905 1.54      
30 A" 920 881 0.75      
31 A" 820 785 0.10      
32 A" 652 624 0.07      
33 A" 350 335 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 25321.4 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 24242.7 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 QCISD/6-311G*
ABC
0.34464 0.15273 0.11517

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.193 -0.425 1.094
C2 0.193 -0.425 -1.094
C3 0.000 0.623 0.000
C4 -0.033 -1.514 0.000
C5 -0.354 1.910 0.000
H6 -0.500 -0.401 1.943
H7 -0.500 -0.401 -1.943
H8 1.222 -0.434 1.477
H9 1.222 -0.434 -1.477
H10 -0.506 2.457 0.929
H11 -0.506 2.457 -0.929
H12 0.648 -2.372 0.000
H13 -1.066 -1.879 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.18741.52711.56002.63581.09593.11441.09832.76942.97023.58982.27882.2125
C22.18741.52711.56002.63583.11441.09592.76941.09833.58982.97022.27882.2125
C31.52711.52712.13771.33472.25222.25222.18902.18902.11722.11723.06412.7200
C41.56001.56002.13773.43932.28722.28722.21932.21934.10604.10601.09491.0956
C52.63582.63581.33473.43933.02253.02253.18713.18711.08891.08894.39733.8555
H61.09593.11442.25222.28723.02253.88531.78373.82913.03254.05162.99592.5059
H73.11441.09592.25222.28723.02253.88533.82911.78374.05163.03252.99592.5059
H81.09832.76942.18902.21933.18711.78373.82912.95483.41184.13892.50373.0833
H92.76941.09832.18902.21933.18713.82911.78372.95484.13893.41182.50373.0833
H102.97023.58982.11724.10601.08893.03254.05163.41184.13891.85825.05094.4700
H113.58982.97022.11724.10601.08894.05163.03254.13893.41181.85825.05094.4700
H122.27882.27883.06411.09494.39732.99592.99592.50372.50375.05095.05091.7834
H132.21252.21252.72001.09563.85552.50592.50593.08333.08334.47004.47001.7834

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 91.484 C1 C3 C5 134.048
C1 C4 C2 89.030 C1 C4 H12 117.179
C1 C4 H13 111.651 C2 C3 C5 134.048
C2 C4 H12 117.179 C2 C4 H13 111.651
C3 C1 C4 87.644 C3 C1 H6 117.389
C3 C1 H8 111.938 C3 C2 C4 87.644
C3 C2 H7 117.389 C3 C2 H9 111.938
C3 C5 H10 121.431 C3 C5 H11 121.431
C4 C1 H6 117.841 C4 C1 H8 112.033
C4 C2 H7 117.841 C4 C2 H9 112.033
H6 C1 H8 108.767 H7 C2 H9 108.767
H10 C5 H11 117.138 H12 C4 H13 109.006
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability