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: B3LYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYP/3-21G
 hartrees
Energy at 0K-189.875136
Energy at 298.15K-189.880378
HF Energy-189.875136
Nuclear repulsion energy79.633108
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/3-21G
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 3463 3342 0.02      
2 A 3039 2932 65.55      
3 A 1578 1522 1.10      
4 A 1417 1367 2.77      
5 A 1212 1170 2.73      
6 A 967 933 103.03      
7 A 567 547 128.55      
8 A 390 376 19.88      
9 B 3465 3343 1.08      
10 B 3081 2973 63.49      
11 B 1449 1398 46.77      
12 B 1381 1333 21.06      
13 B 1021 985 175.66      
14 B 1006 971 34.37      
15 B 411 397 224.87      

Unscaled Zero Point Vibrational Energy (zpe) 12223.0 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 11794.0 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/3-21G
ABC
1.34596 0.32396 0.28667

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.544
O2 0.000 1.203 -0.249
O3 0.000 -1.203 -0.249
H4 -0.889 -0.101 1.175
H5 0.889 0.101 1.175
H6 -0.819 1.180 -0.816
H7 0.819 -1.180 -0.816

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.44041.44041.09521.09521.97801.9780
O21.44042.40522.12532.00820.99672.5822
O31.44042.40522.00822.12532.58220.9967
H41.09522.12532.00821.78992.36862.8370
H51.09522.00822.12531.78992.83702.3686
H61.97800.99672.58222.36862.83702.8721
H71.97802.58220.99672.83702.36862.8721

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 107.109 C1 O3 H7 107.109
O2 C1 O3 113.219 O2 C1 H4 113.198
O2 C1 H5 103.917 O3 C1 H4 103.917
O3 C1 H5 113.198 H4 C1 H5 109.607
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.060      
2 O -0.559      
3 O -0.559      
4 H 0.193      
5 H 0.193      
6 H 0.336      
7 H 0.336      


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 -0.323 0.323
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.453 -3.612 0.000
y -3.612 -22.445 0.000
z 0.000 0.000 -15.642
Traceless
 xyz
x 3.591 -3.612 0.000
y -3.612 -6.898 0.000
z 0.000 0.000 3.307
Polar
3z2-r26.614
x2-y26.992
xy-3.612
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.547 -0.188 0.000
y -0.188 2.547 0.000
z 0.000 0.000 2.549


<r2> (average value of r2) Å2
<r2> 46.874
(<r2>)1/2 6.846