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 CH3CH2OH (Ethanol)

using model chemistry: B3PW91/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-311+G(3df,2p)
 hartrees
Energy at 0K-155.043587
Energy at 298.15K-155.050217
HF Energy-155.043587
Nuclear repulsion energy81.956477
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 B3PW91/6-311+G(3df,2p)
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' 3883 3717 30.78 100.43 0.24 0.38
2 A' 3116 2983 24.41 54.76 0.74 0.85
3 A' 3040 2911 14.75 159.97 0.00 0.01
4 A' 2982 2854 65.88 127.82 0.07 0.14
5 A' 1520 1455 1.90 2.51 0.74 0.85
6 A' 1495 1431 3.05 6.99 0.75 0.86
7 A' 1445 1383 11.07 1.38 0.35 0.52
8 A' 1394 1334 2.63 0.03 0.35 0.52
9 A' 1264 1210 67.92 1.03 0.74 0.85
10 A' 1112 1065 40.33 5.49 0.48 0.65
11 A' 1038 993 51.60 4.74 0.13 0.24
12 A' 904 865 10.88 5.03 0.20 0.33
13 A' 416 398 11.19 0.29 0.62 0.76
14 A" 3118 2985 27.65 40.01 0.75 0.86
15 A" 3010 2882 44.95 95.65 0.75 0.86
16 A" 1476 1413 6.84 4.62 0.75 0.86
17 A" 1296 1240 0.00 4.06 0.75 0.86
18 A" 1176 1125 3.34 0.46 0.75 0.86
19 A" 815 780 0.36 0.13 0.75 0.86
20 A" 277 265 76.72 1.14 0.75 0.86
21 A" 237 226 41.95 0.32 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17505.9 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 16758.4 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 B3PW91/6-311+G(3df,2p)
ABC
1.18300 0.31341 0.27310

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.171 -0.403 0.000
C2 0.000 0.551 0.000
O3 -1.196 -0.216 0.000
H4 -1.947 0.379 0.000
H5 2.113 0.149 0.000
H6 1.145 -1.042 0.884
H7 1.145 -1.042 -0.884
H8 0.041 1.198 0.886
H9 0.041 1.198 -0.886

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8 H9
C11.51082.37433.21521.09131.09081.09082.15082.1508
C21.51081.42041.95502.15102.15152.15151.09751.0975
O32.37431.42040.95863.32852.63442.63442.07632.0763
H43.21521.95500.95864.06693.51573.51572.32542.3254
H51.09132.15103.32854.06691.77081.77082.48602.4860
H61.09082.15152.63443.51571.77081.76762.49713.0605
H71.09082.15152.63443.51571.77081.76763.06052.4971
H82.15081.09752.07632.32542.48602.49713.06051.7715
H92.15081.09752.07632.32542.48603.06052.49711.7715

picture of Ethanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 108.155 C1 C2 H8 110.091
C1 C2 H9 110.091 C2 C1 H5 110.473
C2 C1 H6 110.544 C2 C1 H7 110.544
C2 O3 H4 108.979 O3 C2 H8 110.445
O3 C2 H9 110.445 H5 C1 H6 108.488
H5 C1 H7 108.488 H6 C1 H7 108.229
H8 C2 H9 107.620
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.332      
2 C 0.082      
3 O -0.597      
4 H 0.211      
5 H 0.132      
6 H 0.133      
7 H 0.133      
8 H 0.119      
9 H 0.119      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.124 1.573 0.000 1.578
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.805 -2.450 0.000
y -2.450 -20.048 0.000
z 0.000 0.000 -20.207
Traceless
 xyz
x 2.322 -2.450 0.000
y -2.450 -1.042 0.000
z 0.000 0.000 -1.280
Polar
3z2-r2-2.560
x2-y22.242
xy-2.450
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.327 -0.131 0.000
y -0.131 4.753 0.000
z 0.000 0.000 4.409


<r2> (average value of r2) Å2
<r2> 54.143
(<r2>)1/2 7.358