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All results from a given calculation for CH2(OH)2 (methanediol)

using model chemistry: HF/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 HF/3-21G*
 hartrees
Energy at 0K-188.846942
Energy at 298.15K-188.852279
HF Energy-188.846942
Nuclear repulsion energy80.900447
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 HF/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 3868 3491 14.90      
2 A 3249 2932 61.47      
3 A 1711 1544 3.29      
4 A 1515 1367 3.23      
5 A 1305 1178 0.67      
6 A 1075 970 144.70      
7 A 593 535 165.01      
8 A 426 384 43.53      
9 B 3868 3491 23.43      
10 B 3296 2975 69.46      
11 B 1579 1425 55.74      
12 B 1474 1330 54.21      
13 B 1158 1045 199.19      
14 B 1077 972 53.83      
15 B 391 353 263.68      

Unscaled Zero Point Vibrational Energy (zpe) 13291.4 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 11996.9 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 HF/3-21G*
ABC
1.37639 0.33519 0.29533

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.542
O2 0.000 1.180 -0.247
O3 0.000 -1.180 -0.247
H4 -0.879 -0.076 1.161
H5 0.879 0.076 1.161
H6 -0.785 1.211 -0.811
H7 0.785 -1.211 -0.811

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.41951.41951.07801.07801.97831.9783
O21.41952.35952.08181.99400.96702.5785
O31.41952.35951.99402.08182.57850.9670
H41.07802.08181.99401.76492.35692.8193
H51.07801.99402.08181.76492.81932.3569
H61.97830.96702.57852.35692.81932.8860
H71.97832.57850.96702.81932.35692.8860

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 110.541 C1 O3 H7 110.541
O2 C1 O3 112.422 O2 C1 H4 112.202
O2 C1 H5 105.129 O3 C1 H4 105.129
O3 C1 H5 112.202 H4 C1 H5 109.890
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.229      
2 O -0.704      
3 O -0.704      
4 H 0.207      
5 H 0.207      
6 H 0.382      
7 H 0.382      


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 -0.149 0.149
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.357 -4.091 0.000
y -4.091 -22.999 0.000
z 0.000 0.000 -15.343
Traceless
 xyz
x 3.814 -4.091 0.000
y -4.091 -7.649 0.000
z 0.000 0.000 3.835
Polar
3z2-r27.670
x2-y27.642
xy-4.091
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.301 -0.167 0.000
y -0.167 2.160 0.000
z 0.000 0.000 2.281


<r2> (average value of r2) Å2
<r2> 45.927
(<r2>)1/2 6.777