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All results from a given calculation for H2OCH3OH (water methanol dimer)

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-191.555294
Energy at 298.15K-191.560999
HF Energy-191.052030
Counterpoise corrected energy-191.551356
CP Energy at 298.15K-191.556774
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy80.596892
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 MP2/6-31G*
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 3877 3656 88.62      
2 A 3778 3562 39.32      
3 A 3691 3480 221.28      
4 A 3236 3051 20.80      
5 A 3188 3006 34.45      
6 A 3103 2926 37.01      
7 A 1768 1667 71.08      
8 A 1573 1483 4.19      
9 A 1565 1476 3.82      
10 A 1533 1446 4.09      
11 A 1411 1331 31.94      
12 A 1206 1137 0.29      
13 A 1104 1042 11.79      
14 A 1068 1007 118.93      
15 A 659 621 170.18      
16 A 497 468 23.75      
17 A 293 276 234.79      
18 A 202 191 4.97      
19 A 132 124 131.91      
20 A 96 91 17.27      
21 A 73 69 40.27      

Unscaled Zero Point Vibrational Energy (zpe) 17025.8 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 16055.4 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 MP2/6-31G*
ABC
0.80915 0.15644 0.13766

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.108 0.340 0.154
O2 -1.928 -0.115 -0.121
O3 0.774 0.753 0.140
H4 -2.347 -0.377 0.711
H5 0.747 1.163 -0.742
C6 1.282 -0.577 -0.025
H7 2.261 -0.574 -0.516
H8 1.397 -0.983 0.980
H9 0.585 -1.205 -0.587

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H10.97711.92681.53652.21842.56693.55462.95092.4087
O20.97712.84950.96823.02883.24454.23203.60782.7776
O31.92682.84953.36840.97221.43342.09762.02662.0964
H41.53650.96823.36843.74963.70924.77293.80253.3117
H52.21843.02880.97223.74961.95642.31472.82652.3779
C62.56693.24451.43343.70921.95641.09451.08961.0937
H73.55464.23202.09764.77292.31471.09451.77481.7925
H82.95093.60782.02663.80252.82651.08961.77481.7785
H92.40872.77762.09643.31172.37791.09371.79251.7785

picture of water methanol dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 104.341 H1 O3 H5 94.036
H1 O3 C6 98.558 O2 H1 O3 156.465
O3 C6 H7 111.447 O3 C6 H8 106.075
O3 C6 H9 111.399 H5 O3 C6 107.272
H7 C6 H8 108.695 H7 C6 H9 109.997
H8 C6 H9 109.096
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability