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 CH2(OH)2 (methanediol)

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-190.861015
Energy at 298.15K-190.866316
HF Energy-190.861015
Nuclear repulsion energy81.862305
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 B1B95/6-31G*
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 3795 3602 16.54      
2 A 3068 2912 69.72      
3 A 1561 1482 1.44      
4 A 1421 1349 3.71      
5 A 1229 1167 0.32      
6 A 1079 1025 111.38      
7 A 584 555 99.32      
8 A 406 386 39.45      
9 B 3794 3602 28.86      
10 B 3118 2960 65.90      
11 B 1478 1403 88.49      
12 B 1396 1326 27.52      
13 B 1135 1077 232.55      
14 B 1026 974 23.03      
15 B 417 396 204.15      

Unscaled Zero Point Vibrational Energy (zpe) 12753.8 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 12107.2 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 B1B95/6-31G*
ABC
1.40350 0.34500 0.30523

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.527
O2 0.000 1.164 -0.245
O3 0.000 -1.164 -0.245
H4 -0.889 -0.079 1.161
H5 0.889 0.079 1.161
H6 -0.802 1.145 -0.784
H7 0.802 -1.145 -0.784

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.39621.39621.09501.09501.91601.9160
O21.39622.32732.07641.98550.96652.5025
O31.39622.32731.98552.07642.50250.9665
H41.09502.07641.98551.78542.29952.7887
H51.09501.98552.07641.78542.78872.2995
H61.91600.96652.50252.29952.78872.7955
H71.91602.50250.96652.78872.29952.7955

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.969 C1 O3 H7 106.969
O2 C1 O3 112.913 O2 C1 H4 112.358
O2 C1 H5 105.048 O3 C1 H4 105.048
O3 C1 H5 112.358 H4 C1 H5 109.220
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.109      
2 O -0.614      
3 O -0.614      
4 H 0.155      
5 H 0.155      
6 H 0.404      
7 H 0.404      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.352 0.352
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.427 -3.397 0.000
y -3.397 -22.036 0.000
z 0.000 0.000 -15.965
Traceless
 xyz
x 3.574 -3.397 0.000
y -3.397 -6.341 0.000
z 0.000 0.000 2.767
Polar
3z2-r25.534
x2-y26.610
xy-3.397
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.770 -0.135 0.000
y -0.135 2.740 0.000
z 0.000 0.000 2.793


<r2> (average value of r2) Å2
<r2> 44.837
(<r2>)1/2 6.696