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

using model chemistry: QCISD/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 QCISD/cc-pVDZ
 hartrees
Energy at 0K-194.700573
Energy at 298.15K-194.709073
HF Energy-193.955260
Nuclear repulsion energy166.370170
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/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' 3161 3033 6.61      
2 A' 3156 3028 48.41      
3 A' 3131 3004 12.43      
4 A' 3092 2966 37.97      
5 A' 3072 2948 12.79      
6 A' 1773 1701 13.00      
7 A' 1501 1440 0.10      
8 A' 1472 1412 1.92      
9 A' 1445 1386 0.98      
10 A' 1273 1221 0.60      
11 A' 1224 1175 0.11      
12 A' 1095 1051 1.01      
13 A' 988 948 0.35      
14 A' 905 869 0.94      
15 A' 898 862 32.20      
16 A' 751 720 1.29      
17 A' 661 634 1.32      
18 A' 375 360 4.94      
19 A' 123 118 0.11      
20 A" 3254 3122 11.65      
21 A" 3135 3008 16.59      
22 A" 3069 2945 42.83      
23 A" 1463 1403 2.29      
24 A" 1298 1246 0.36      
25 A" 1256 1205 0.14      
26 A" 1221 1171 0.33      
27 A" 1198 1150 0.72      
28 A" 1042 1000 0.11      
29 A" 942 903 0.88      
30 A" 920 883 0.84      
31 A" 811 778 0.07      
32 A" 647 620 0.07      
33 A" 348 334 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 25349.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 24320.3 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 QCISD/cc-pVDZ
ABC
0.34089 0.15172 0.11461

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.205 -0.425 1.097
C2 0.205 -0.425 -1.097
C3 0.000 0.624 0.000
C4 -0.031 -1.516 0.000
C5 -0.382 1.911 0.000
H6 -0.480 -0.403 1.962
H7 -0.480 -0.403 -1.962
H8 1.248 -0.433 1.465
H9 1.248 -0.433 -1.465
H10 -0.545 2.456 0.938
H11 -0.545 2.456 -0.938
H12 0.643 -2.388 0.000
H13 -1.078 -1.866 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.19311.53191.56452.64711.10373.13411.10602.76532.98183.60632.29082.2191
C22.19311.53191.56452.64713.13411.10372.76531.10603.60632.98182.29082.2191
C31.53191.53192.14071.34232.26572.26572.19582.19582.12882.12883.08082.7139
C41.56451.56452.14073.44532.29982.29982.22562.22564.11364.11361.10261.1037
C52.64712.64711.34233.44533.03533.03533.20923.20921.09691.09694.42033.8414
H61.10373.13412.26572.29983.03533.92341.79833.83743.03734.07253.00882.5196
H73.13411.10372.26572.29983.03533.92343.83741.79834.07253.03733.00882.5196
H81.10602.76532.19582.22563.20921.79833.83742.92903.44124.16372.51663.0996
H92.76531.10602.19582.22563.20923.83741.79832.92904.16373.44122.51663.0996
H102.98183.60632.12884.11361.09693.03734.07253.44124.16371.87605.07564.4551
H113.60632.98182.12884.11361.09694.07253.03734.16373.44121.87605.07564.4551
H122.29082.29083.08081.10264.42033.00883.00882.51662.51665.07565.07561.7983
H132.21912.21912.71391.10373.84142.51962.51963.09963.09964.45514.45511.7983

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 91.421 C1 C3 C5 134.037
C1 C4 C2 88.999 C1 C4 H12 117.340
C1 C4 H13 111.372 C2 C3 C5 134.037
C2 C4 H12 117.340 C2 C4 H13 111.372
C3 C1 C4 87.467 C3 C1 H6 117.637
C3 C1 H8 111.677 C3 C2 C4 87.467
C3 C2 H7 117.637 C3 C2 H9 111.677
C3 C5 H10 121.229 C3 C5 H11 121.229
C4 C1 H6 118.041 C4 C1 H8 111.746
C4 C2 H7 118.041 C4 C2 H9 111.746
H6 C1 H8 108.942 H7 C2 H9 108.942
H10 C5 H11 117.543 H12 C4 H13 109.189
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability