return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C4H8O (Cyclobutanol)

using model chemistry: QCISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-230.194971
Energy at 298.15K-230.204639
HF Energy-229.664480
Nuclear repulsion energy180.998311
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/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 3464 3358 2.45      
2 A 3144 3047 43.60      
3 A 3129 3032 8.32      
4 A 3090 2995 14.30      
5 A 3076 2982 19.58      
6 A 3052 2958 14.91      
7 A 1567 1519 2.60      
8 A 1553 1505 8.32      
9 A 1434 1390 47.70      
10 A 1377 1335 0.86      
11 A 1275 1236 20.17      
12 A 1243 1205 0.61      
13 A 1119 1084 24.93      
14 A 1088 1055 105.23      
15 A 945 916 8.40      
16 A 895 868 1.36      
17 A 740 717 4.79      
18 A 607 588 2.39      
19 A 437 423 5.75      
20 A 186 181 2.57      
21 A 3128 3032 23.03      
22 A 3048 2954 23.33      
23 A 1538 1491 2.79      
24 A 1329 1288 0.00      
25 A 1292 1252 1.02      
26 A 1273 1234 0.00      
27 A 1202 1165 0.09      
28 A 1037 1005 3.55      
29 A 921 893 20.41      
30 A 867 841 0.00      
31 A 796 772 1.12      
32 A 391 379 105.09      
33 A 328 318 31.14      

Unscaled Zero Point Vibrational Energy (zpe) 25286.4 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 24507.6 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/3-21G
ABC
0.32706 0.13583 0.10871

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.114 0.673 0.000
C2 0.114 -0.463 1.106
C3 0.114 -0.463 -1.106
C4 0.691 -1.443 0.000
O5 -0.894 1.711 0.000
H6 1.079 1.193 0.000
H7 0.695 -0.297 2.018
H8 -0.922 -0.738 1.353
H9 0.695 -0.297 -2.018
H10 -0.922 -0.738 -1.353
H11 1.787 -1.429 0.000
H12 0.323 -2.473 0.000
H13 -1.780 1.259 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 H6 H7 H8 H9 H10 H11 H12 H13
C11.58551.58552.19331.44711.09602.31332.21252.31332.21252.68713.15321.9829
C21.58552.21171.58612.63942.21241.09431.10003.18182.68232.22632.30372.7887
C31.58552.21171.58612.63942.21243.18182.68231.09431.10002.22632.30372.7887
C42.19331.58611.58613.52992.66402.32082.21992.32082.21991.09681.09383.6614
O51.44712.63942.63943.52992.04063.26062.79803.26062.79804.12974.35750.9946
H61.09602.21242.21242.66402.04062.53733.09222.53733.09222.71593.74282.8603
H72.31331.09433.18182.32083.26062.53731.80344.03613.76492.55882.99123.5528
H82.21251.10002.68232.21992.79803.09221.80343.76492.70613.10622.52792.5603
H92.31333.18181.09432.32083.26062.53734.03613.76491.80342.55882.99123.5528
H102.21252.68231.10002.21992.79803.09223.76492.70611.80343.10622.52792.5603
H112.68712.22632.22631.09684.12972.71592.55883.10622.55883.10621.79844.4672
H123.15322.30372.30371.09384.35753.74282.99122.52792.99122.52791.79844.2838
H131.98292.78872.78873.66140.99462.86033.55282.56033.55282.56034.46724.2838

picture of Cyclobutanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 87.506 C1 C2 H7 118.207
C1 C2 H8 109.621 C1 C3 C4 87.506
C1 C3 H9 118.207 C1 C3 H10 109.621
C1 O5 H13 107.147 C2 C1 C3 88.452
C2 C1 O5 120.927 C2 C1 H6 109.848
C2 C4 C3 88.410 C2 C4 H11 110.843
C2 C4 H12 117.365 C3 C1 O5 120.927
C3 C1 H6 109.848 C3 C4 H11 110.843
C3 C4 H12 117.365 C4 C2 H7 118.812
C4 C2 H8 110.153 C4 C3 H9 118.812
C4 C3 H10 110.153 O5 C1 H6 105.896
H7 C2 H8 110.540 H9 C3 H10 110.540
H11 C4 H12 110.359
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability