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: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-230.146685
Energy at 298.15K-230.156430
HF Energy-229.665251
Nuclear repulsion energy181.537103
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 MP2/3-21G
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 3502 3343 2.90      
2 A 3205 3059 38.47      
3 A 3188 3043 9.91      
4 A 3147 3004 14.33      
5 A 3133 2990 19.04      
6 A 3107 2965 13.44      
7 A 1591 1518 2.55      
8 A 1578 1507 8.76      
9 A 1442 1376 40.90      
10 A 1389 1325 1.92      
11 A 1289 1230 22.08      
12 A 1260 1203 1.09      
13 A 1134 1082 13.32      
14 A 1091 1042 127.00      
15 A 960 916 12.47      
16 A 911 870 1.70      
17 A 752 717 4.83      
18 A 610 582 2.52      
19 A 446 426 5.41      
20 A 199 190 2.77      
21 A 3187 3042 21.74      
22 A 3103 2962 22.12      
23 A 1561 1490 2.61      
24 A 1348 1287 0.00      
25 A 1310 1250 1.05      
26 A 1290 1231 0.01      
27 A 1216 1161 0.16      
28 A 1048 1000 3.73      
29 A 935 892 20.71      
30 A 882 842 0.11      
31 A 811 774 1.34      
32 A 396 378 108.53      
33 A 333 317 28.61      

Unscaled Zero Point Vibrational Energy (zpe) 25676.4 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 24508.2 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 MP2/3-21G
ABC
0.33028 0.13624 0.10919

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.108 0.667 0.000
C2 0.108 -0.467 1.101
C3 0.108 -0.467 -1.101
C4 0.703 -1.431 0.000
O5 -0.890 1.713 0.000
H6 1.074 1.177 0.000
H7 0.673 -0.299 2.019
H8 -0.925 -0.753 1.330
H9 0.673 -0.299 -2.019
H10 -0.925 -0.753 -1.330
H11 1.795 -1.390 0.000
H12 0.362 -2.467 0.000
H13 -1.777 1.266 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 H6 H7 H8 H9 H10 H11 H12 H13
C11.58001.58002.18091.44651.09242.30792.20242.30792.20242.66043.14381.9786
C21.58002.20111.57972.63842.20131.09071.09633.17432.65612.21582.29672.7874
C31.58002.20111.57972.63842.20133.17432.65611.09071.09632.21582.29672.7874
C42.18091.57971.57973.52542.63452.31482.20892.31482.20891.09291.09013.6646
O51.44652.63842.63843.52542.03673.25072.80183.25072.80184.10434.36350.9934
H61.09242.20132.20132.63452.03672.53263.08032.53263.08032.66643.71252.8531
H72.30791.09073.17432.31483.25072.53261.79814.03743.73752.55472.97843.5393
H82.20241.09632.65612.20892.80183.08031.79813.73752.65913.09422.52212.5631
H92.30793.17431.09072.31483.25072.53264.03743.73751.79812.55472.97843.5393
H102.20242.65611.09632.20892.80183.08033.73752.65911.79813.09422.52212.5631
H112.66042.21582.21581.09294.10432.66642.55473.09422.55473.09421.79264.4520
H123.14382.29672.29671.09014.36353.71252.97842.52212.97842.52211.79264.3022
H131.97862.78742.78743.66460.99342.85313.53932.56313.53932.56314.45204.3022

picture of Cyclobutanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 87.298 C1 C2 H7 118.419
C1 C2 H8 109.429 C1 C3 C4 87.298
C1 C3 H9 118.419 C1 C3 H10 109.429
C1 O5 H13 106.906 C2 C1 C3 88.302
C2 C1 O5 121.268 C2 C1 H6 109.570
C2 C4 C3 88.323 C2 C4 H11 110.691
C2 C4 H12 117.517 C3 C1 O5 121.268
C3 C1 H6 109.570 C3 C4 H11 110.691
C3 C4 H12 117.517 C4 C2 H7 119.054
C4 C2 H8 109.948 C4 C3 H9 119.054
C4 C3 H10 109.948 O5 C1 H6 105.836
H7 C2 H8 110.606 H9 C3 H10 110.606
H11 C4 H12 110.402
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.213     0.065
2 H 0.177     0.037
3 C -0.371     -0.009
4 H 0.187     0.096
5 H 0.176     0.091
6 C -0.380     -0.306
7 H 0.164     -0.010
8 C 0.017     0.330
9 H 0.186     0.096
10 H 0.204     0.114
11 C -0.353     -0.290
12 H 0.338     0.388
13 O -0.559     -0.603


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.068 1.371 0.918 1.651
CHELPG        
AIM        
ESP -0.056 1.354 0.895 1.624


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.262 3.445 0.506
y 3.445 -31.603 -0.789
z 0.506 -0.789 -32.285
Traceless
 xyz
x 0.682 3.445 0.506
y 3.445 0.171 -0.789
z 0.506 -0.789 -0.852
Polar
3z2-r2-1.705
x2-y20.341
xy3.445
xz0.506
yz-0.789


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.267 0.289 -0.194
y 0.289 6.047 -0.038
z -0.194 -0.038 5.739


<r2> (average value of r2) Å2
<r2> 109.821
(<r2>)1/2 10.480