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: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-232.397386
Energy at 298.15K-232.407086
Nuclear repulsion energy185.347398
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 mPW1PW91/6-31G(2df,p)
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 3877 3702 16.23      
2 A 3159 3016 47.57      
3 A 3141 2998 18.27      
4 A 3095 2955 27.43      
5 A 3092 2952 22.83      
6 A 3071 2932 13.89      
7 A 1514 1445 8.70      
8 A 1488 1420 5.60      
9 A 1442 1377 70.13      
10 A 1348 1287 0.79      
11 A 1276 1218 21.50      
12 A 1222 1166 0.56      
13 A 1174 1121 116.21      
14 A 1090 1041 39.35      
15 A 1003 957 9.19      
16 A 917 876 1.08      
17 A 761 726 3.14      
18 A 608 581 2.53      
19 A 456 435 3.96      
20 A 182 174 1.48      
21 A 3141 2998 32.95      
22 A 3067 2928 38.26      
23 A 1473 1406 1.22      
24 A 1299 1240 0.66      
25 A 1255 1198 0.40      
26 A 1249 1192 0.26      
27 A 1192 1138 0.01      
28 A 1054 1006 8.42      
29 A 948 905 4.24      
30 A 938 896 0.89      
31 A 786 750 0.78      
32 A 403 385 39.66      
33 A 303 289 64.29      

Unscaled Zero Point Vibrational Energy (zpe) 25510.7 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 24355.0 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 mPW1PW91/6-31G(2df,p)
ABC
0.34095 0.14375 0.11480

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.109 0.659 0.000
C2 0.109 -0.447 1.077
C3 0.109 -0.447 -1.077
C4 0.668 -1.403 0.000
O5 -0.864 1.658 0.000
H6 1.071 1.182 0.000
H7 0.677 -0.286 1.995
H8 -0.918 -0.717 1.342
H9 0.677 -0.286 -1.995
H10 -0.918 -0.717 -1.342
H11 1.760 -1.413 0.000
H12 0.311 -2.433 0.000
H13 -1.722 1.229 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54431.54432.13661.39471.09402.27942.18042.27942.18042.64973.09901.9180
C21.54432.15471.54472.55752.17671.09111.09543.12852.64292.19522.26842.7064
C31.54432.15471.54472.55752.17673.12852.64291.09111.09542.19522.26842.7064
C42.13661.54471.54473.42312.61602.28652.18822.28652.18821.09231.09013.5552
O51.39472.55752.55753.42311.99253.18352.72923.18352.72924.03984.25670.9591
H61.09402.17672.17672.61601.99252.50763.06032.50763.06032.68513.69382.7929
H72.27941.09113.12852.28653.18352.50761.77733.98983.72442.53442.95383.4687
H82.18041.09542.64292.18822.72923.06031.77733.72442.68493.07582.50152.4975
H92.27943.12851.09112.28653.18352.50763.98983.72441.77732.53442.95383.4687
H102.18042.64291.09542.18822.72923.06033.72442.68491.77733.07582.50152.4975
H112.64972.19522.19521.09234.03982.68512.53443.07582.53443.07581.77184.3712
H123.09902.26842.26841.09014.25673.69382.95382.50152.95382.50151.77184.1888
H131.91802.70642.70643.55520.95912.79293.46872.49753.46872.49754.37124.1888

picture of Cyclobutanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 87.525 C1 C2 H7 118.728
C1 C2 H8 110.223 C1 C3 C4 87.525
C1 C3 H9 118.728 C1 C3 H10 110.223
C1 O5 H13 107.701 C2 C1 C3 88.470
C2 C1 O5 120.869 C2 C1 H6 110.008
C2 C4 C3 88.443 C2 C4 H11 111.552
C2 C4 H12 117.802 C3 C1 O5 120.869
C3 C1 H6 110.008 C3 C4 H11 111.552
C3 C4 H12 117.802 C4 C2 H7 119.329
C4 C2 H8 110.813 C4 C3 H9 119.329
C4 C3 H10 110.813 O5 C1 H6 105.741
H7 C2 H8 108.749 H9 C3 H10 108.749
H11 C4 H12 108.559
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.157      
2 C -0.304      
3 C -0.304      
4 C -0.270      
5 O -0.465      
6 H 0.124      
7 H 0.129      
8 H 0.121      
9 H 0.129      
10 H 0.121      
11 H 0.137      
12 H 0.131      
13 H 0.294      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.355 -1.430 0.000 1.474
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.212 1.073 0.000
y 1.073 -35.520 0.000
z 0.000 0.000 -31.582
Traceless
 xyz
x 6.339 1.073 0.000
y 1.073 -6.123 0.000
z 0.000 0.000 -0.216
Polar
3z2-r2-0.433
x2-y28.308
xy1.073
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.674 -0.359 0.000
y -0.359 6.770 0.000
z 0.000 0.000 6.650


<r2> (average value of r2) Å2
<r2> 114.734
(<r2>)1/2 10.711