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

using model chemistry: CID/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CID/3-21G
 hartrees
Energy at 0K-193.286931
Energy at 298.15K-193.295359
Nuclear repulsion energy165.917979
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 CID/3-21G
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' 3234 3012 35.05      
2 A' 3211 2991 6.57      
3 A' 3197 2978 10.50      
4 A' 3175 2958 30.61      
5 A' 3154 2938 2.03      
6 A' 1823 1698 8.98      
7 A' 1603 1494 0.22      
8 A' 1577 1469 0.73      
9 A' 1547 1441 0.78      
10 A' 1329 1238 0.21      
11 A' 1292 1204 0.02      
12 A' 1146 1067 0.10      
13 A' 991 924 48.28      
14 A' 958 893 0.75      
15 A' 874 814 0.01      
16 A' 771 718 2.17      
17 A' 695 648 0.74      
18 A' 383 357 8.05      
19 A' 11 11 0.03      
20 A" 3284 3059 11.86      
21 A" 3203 2984 0.00      
22 A" 3150 2935 38.15      
23 A" 1573 1466 4.38      
24 A" 1340 1249 0.43      
25 A" 1313 1223 0.64      
26 A" 1300 1211 0.00      
27 A" 1254 1168 4.88      
28 A" 1127 1050 0.00      
29 A" 933 869 0.11      
30 A" 914 851 2.04      
31 A" 863 804 0.00      
32 A" 669 624 0.00      
33 A" 374 348 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 26134.9 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 24347.3 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 CID/3-21G
ABC
0.34476 0.15063 0.11150

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -0.432 1.120
C2 0.000 -0.432 -1.120
C3 0.000 0.632 0.000
C4 -0.000 -1.553 0.000
C5 -0.000 1.953 0.000
H6 -0.892 -0.424 1.746
H7 -0.892 -0.424 -1.746
H8 0.893 -0.424 1.746
H9 0.893 -0.424 -1.746
H10 -0.000 2.524 0.921
H11 -0.000 2.524 -0.921
H12 0.891 -2.178 0.000
H13 -0.891 -2.177 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.23931.54471.58422.63511.09023.00171.09023.00132.96283.59212.25702.2569
C22.23931.54471.58422.63513.00171.09023.00131.09023.59212.96282.25702.2569
C31.54471.54472.18491.32132.22722.22722.22712.22712.10422.10422.94762.9472
C41.58421.58422.18493.50622.26272.26272.26262.26264.17964.17961.08811.0881
C52.63512.63511.32133.50623.08153.08153.08173.08171.08351.08354.22614.2255
H61.09023.00172.22722.26273.08153.49291.78423.92173.18844.07433.05012.4747
H73.00171.09022.22722.26273.08153.49293.92171.78424.07433.18843.05012.4747
H81.09023.00132.22712.26263.08171.78423.92173.49183.18884.07442.47473.0502
H93.00131.09022.22712.26263.08173.92171.78423.49184.07443.18882.47473.0502
H102.96283.59212.10424.17961.08353.18844.07433.18884.07441.84204.87344.8727
H113.59212.96282.10424.17961.08354.07433.18844.07443.18881.84204.87344.8727
H122.25702.25702.94761.08814.22613.05013.05012.47472.47474.87344.87341.7819
H132.25692.25692.94721.08814.22552.47472.47473.05023.05024.87274.87271.7819

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 92.912 C1 C3 C5 133.544
C1 C4 C2 89.943 C1 C4 H12 113.964
C1 C4 H13 113.958 C2 C3 C5 133.544
C2 C4 H12 113.964 C2 C4 H13 113.958
C3 C1 C4 88.573 C3 C1 H6 114.296
C3 C1 H8 114.290 C3 C2 C4 88.573
C3 C2 H7 114.296 C3 C2 H9 114.290
C3 C5 H10 121.787 C3 C5 H11 121.787
C4 C1 H6 114.301 C4 C1 H8 114.295
C4 C2 H7 114.301 C4 C2 H9 114.295
H6 C1 H8 109.835 H7 C2 H9 109.835
H10 C5 H11 116.426 H12 C4 H13 109.934
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability