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 CH3OHH2O (methanol water dimer)

using model chemistry: B3LYP/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B3LYP/aug-cc-pVTZ
 hartrees
Energy at 0K-192.249974
Energy at 298.15K-192.255027
Counterpoise corrected energy-192.249867
CP Energy at 298.15K-192.254867
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy78.214793
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 B3LYP/aug-cc-pVTZ
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' 3791 3668 7.83      
2 A' 3696 3576 419.83      
3 A' 3092 2992 38.70      
4 A' 2981 2884 77.41      
5 A' 1629 1576 76.15      
6 A' 1510 1461 3.54      
7 A' 1476 1428 3.96      
8 A' 1417 1371 35.74      
9 A' 1112 1076 9.69      
10 A' 1059 1025 103.62      
11 A' 239 232 192.30      
12 A' 155 150 11.03      
13 A' 76 73 37.93      
14 A" 3890 3763 83.12      
15 A" 3021 2923 64.75      
16 A" 1497 1448 2.40      
17 A" 1172 1134 0.54      
18 A" 661 639 103.79      
19 A" 181 175 0.57      
20 A" 83 80 9.14      
21 A" 44 43 47.00      

Unscaled Zero Point Vibrational Energy (zpe) 16390.9 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 15858.2 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 B3LYP/aug-cc-pVTZ
ABC
1.13743 0.12314 0.11533

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.358 0.000
O2 -0.963 0.261 0.000
O3 1.918 0.766 0.000
C4 -1.291 -1.118 0.000
H5 2.155 1.298 0.766
H6 2.155 1.298 -0.766
H7 -2.378 -1.193 0.000
H8 -0.912 -1.633 -0.889
H9 -0.912 -1.633 0.889

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.96761.96081.96102.47252.47252.83902.36362.3636
O20.96762.92451.41773.37353.37352.02912.09322.0932
O31.96082.92453.72120.96250.96254.72133.81493.8149
C41.96101.41773.72124.27784.27781.08921.09541.0954
H52.47253.37350.96254.27781.53215.22854.55384.2442
H62.47253.37350.96254.27781.53215.22854.24424.5538
H72.83902.02914.72131.08925.22855.22851.77011.7701
H82.36362.09323.81491.09544.55384.24421.77011.7780
H92.36362.09323.81491.09544.24424.55381.77011.7780

picture of methanol water dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 C4 109.140 H1 O3 H5 110.834
H1 O3 H6 110.834 O2 H1 O3 173.730
O2 C4 H7 107.355 O2 C4 H8 112.169
O2 C4 H9 112.169 H5 O3 H6 105.472
H7 C4 H8 108.247 H7 C4 H9 108.247
H8 C4 H9 108.508
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.264      
2 O -0.491      
3 O -0.348      
4 C -0.503      
5 H 0.175      
6 H 0.175      
7 H 0.257      
8 H 0.236      
9 H 0.236      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.531 0.751 0.000 2.640
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.813 7.068 0.000
y 7.068 -17.063 0.000
z 0.000 0.000 -18.450
Traceless
 xyz
x -0.056 7.068 0.000
y 7.068 1.069 0.000
z 0.000 0.000 -1.012
Polar
3z2-r2-2.024
x2-y2-0.750
xy7.068
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.961 0.469 0.000
y 0.469 4.893 0.000
z 0.000 0.000 4.384


<r2> (average value of r2) Å2
<r2> 100.307
(<r2>)1/2 10.015