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 CH3OH (Methyl alcohol)

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-115.584978
Energy at 298.15K-115.589161
HF Energy-115.483173
Nuclear repulsion energy40.250081
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 B2PLYP/6-31G*
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' 3783 3591 15.35      
2 A' 3177 3016 32.80      
3 A' 3040 2885 59.09      
4 A' 1563 1484 3.69      
5 A' 1529 1452 7.81      
6 A' 1414 1342 28.44      
7 A' 1106 1050 0.61      
8 A' 1079 1024 120.08      
9 A" 3090 2933 79.23      
10 A" 1548 1470 1.58      
11 A" 1197 1136 0.76      
12 A" 351 333 131.13      

Unscaled Zero Point Vibrational Energy (zpe) 11438.8 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 10857.7 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 B2PLYP/6-31G*
ABC
4.25478 0.82717 0.79748

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.046 0.660 0.000
O2 -0.046 -0.756 0.000
H3 -1.092 0.970 0.000
H4 0.434 1.088 0.891
H5 0.434 1.088 -0.891
H6 0.871 -1.056 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 H6
C11.41581.09101.09901.09901.9458
O21.41582.01852.10352.10350.9655
H31.09102.01851.77111.77112.8217
H41.09902.10351.77111.78162.3625
H51.09902.10351.77111.78162.3625
H61.94580.96552.82172.36252.3625

picture of Methyl alcohol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 108.111 O2 C1 H3 106.551
O2 C1 H4 112.931 O2 C1 H5 112.931
H3 C1 H4 107.946 H3 C1 H5 107.946
H4 C1 H5 108.304
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.206      
2 O -0.631      
3 H 0.167      
4 H 0.134      
5 H 0.134      
6 H 0.402      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.468 0.956 0.000 1.751
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.583 -2.147 0.000
y -2.147 -13.088 0.000
z 0.000 0.000 -13.652
Traceless
 xyz
x 1.787 -2.147 0.000
y -2.147 -0.470 0.000
z 0.000 0.000 -1.317
Polar
3z2-r2-2.634
x2-y21.505
xy-2.147
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.369 -0.155 0.000
y -0.155 2.468 0.000
z 0.000 0.000 2.051


<r2> (average value of r2) Å2
<r2> 23.553
(<r2>)1/2 4.853