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

using model chemistry: MP2/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-194.674286
Energy at 298.15K-194.682796
HF Energy-193.962097
Nuclear repulsion energy166.845170
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/aug-cc-pVDZ
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' 3174 3044 36.47      
2 A' 3169 3039 7.61      
3 A' 3147 3018 8.27      
4 A' 3098 2971 39.47      
5 A' 3075 2949 12.99      
6 A' 1732 1661 18.57      
7 A' 1490 1429 0.12      
8 A' 1465 1405 2.91      
9 A' 1435 1376 0.97      
10 A' 1235 1184 0.22      
11 A' 1211 1161 0.31      
12 A' 1079 1035 1.65      
13 A' 980 939 0.49      
14 A' 902 865 2.55      
15 A' 896 860 40.07      
16 A' 746 716 2.10      
17 A' 659 632 2.11      
18 A' 380 364 6.06      
19 A' 139 133 0.51      
20 A" 3271 3137 8.71      
21 A" 3151 3022 21.24      
22 A" 3072 2946 36.59      
23 A" 1451 1391 3.69      
24 A" 1269 1217 0.03      
25 A" 1234 1184 0.22      
26 A" 1196 1147 0.28      
27 A" 1165 1117 1.11      
28 A" 1031 988 0.24      
29 A" 925 887 1.48      
30 A" 913 876 0.80      
31 A" 802 769 0.04      
32 A" 647 621 0.09      
33 A" 347 333 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 25242.2 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 24207.3 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/aug-cc-pVDZ
ABC
0.33705 0.15331 0.11659

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.260 -0.410 1.093
C2 0.260 -0.410 -1.093
C3 0.000 0.624 0.000
C4 -0.003 -1.500 0.000
C5 -0.516 1.867 0.000
H6 -0.382 -0.391 1.986
H7 -0.382 -0.391 -1.986
H8 1.320 -0.409 1.400
H9 1.320 -0.409 -1.400
H10 -0.733 2.388 0.937
H11 -0.733 2.388 -0.937
H12 0.643 -2.389 0.000
H13 -1.060 -1.806 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.18521.52671.56532.64261.10023.14471.10332.70862.97313.59662.29262.2097
C22.18521.52671.56532.64263.14471.10022.70861.10333.59662.97312.29262.2097
C31.52671.52672.12361.34632.26262.26262.18362.18362.12772.12773.08072.6504
C41.56531.56532.12363.40592.30562.30562.21362.21364.06494.06491.09941.1002
C52.64262.64261.34633.40593.01033.01033.24203.24201.09371.09374.41143.7129
H61.10023.14472.26262.30563.01033.97161.79973.78952.99094.04842.99772.5305
H73.14471.10022.26262.30563.01033.97163.78951.79974.04842.99092.99772.5305
H81.10332.70862.18362.21363.24201.79973.78952.80023.49994.18302.51763.0941
H92.70861.10332.18362.21363.24203.78951.79972.80024.18303.49992.51763.0941
H102.97313.59662.12774.06491.09372.99094.04843.49994.18301.87435.05874.3091
H113.59662.97312.12774.06491.09374.04842.99094.18303.49991.87435.05874.3091
H122.29262.29263.08071.09944.41142.99772.99772.51762.51765.05875.05871.8005
H132.20972.20972.65041.10023.71292.53052.53053.09413.09414.30914.30911.8005

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 91.397 C1 C3 C5 133.704
C1 C4 C2 88.540 C1 C4 H12 117.650
C1 C4 H13 110.792 C2 C3 C5 133.704
C2 C4 H12 117.650 C2 C4 H13 110.792
C3 C1 C4 86.745 C3 C1 H6 118.023
C3 C1 H8 111.236 C3 C2 C4 86.745
C3 C2 H7 118.023 C3 C2 H9 111.236
C3 C5 H10 121.038 C3 C5 H11 121.038
C4 C1 H6 118.730 C4 C1 H8 110.911
C4 C2 H7 118.730 C4 C2 H9 110.911
H6 C1 H8 109.523 H7 C2 H9 109.523
H10 C5 H11 117.923 H12 C4 H13 109.885
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability