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

using model chemistry: HF/CEP-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 HF/CEP-31G*
 hartrees
Energy at 0K-39.197150
Energy at 298.15K-39.202523
HF Energy-39.197150
Nuclear repulsion energy49.255294
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/CEP-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 4142 3720 35.50      
2 A 3273 2939 105.14      
3 A 1669 1499 4.85      
4 A 1509 1355 7.18      
5 A 1298 1166 2.15      
6 A 1159 1041 142.47      
7 A 611 549 114.39      
8 A 438 393 70.95      
9 B 4141 3719 64.11      
10 B 3330 2990 98.63      
11 B 1595 1433 141.72      
12 B 1488 1337 51.11      
13 B 1222 1097 286.97      
14 B 1086 975 17.18      
15 B 398 357 225.04      

Unscaled Zero Point Vibrational Energy (zpe) 13679.2 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 12284.0 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 HF/CEP-31G*
ABC
1.40013 0.34632 0.30570

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.532
O2 0.000 1.160 -0.247
O3 0.000 -1.160 -0.247
H4 -0.890 -0.064 1.157
H5 0.890 0.064 1.157
H6 -0.792 1.173 -0.776
H7 0.792 -1.173 -0.776

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.39751.39751.08861.08861.92701.9270
O21.39752.31972.06391.99090.95182.5197
O31.39752.31971.99092.06392.51970.9518
H41.08862.06391.99091.78382.29632.7911
H51.08861.99092.06391.78382.79112.2963
H61.92700.95182.51972.29632.79112.8305
H71.92702.51970.95182.79112.29632.8305

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 108.737 C1 O3 H7 108.737
O2 C1 O3 112.184 O2 C1 H4 111.625
O2 C1 H5 105.736 O3 C1 H4 105.736
O3 C1 H5 111.625 H4 C1 H5 110.027
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.083      
2 O -0.536      
3 O -0.536      
4 H 0.151      
5 H 0.151      
6 H 0.427      
7 H 0.427      


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 -0.167 0.167
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.405 -3.888 0.000
y -3.888 -22.978 0.000
z 0.000 0.000 -16.053
Traceless
 xyz
x 4.111 -3.888 0.000
y -3.888 -7.249 0.000
z 0.000 0.000 3.138
Polar
3z2-r26.276
x2-y27.573
xy-3.888
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.528 -0.080 0.000
y -0.080 2.526 0.000
z 0.000 0.000 2.569


<r2> (average value of r2) Å2
<r2> 38.819
(<r2>)1/2 6.231