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: PBEPBEultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBEPBEultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-190.821523
Energy at 298.15K-190.826675
HF Energy-190.821523
Nuclear repulsion energy80.802784
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 PBEPBEultrafine/aug-cc-pVTZ
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 3680 3639 16.26      
2 A 2952 2919 55.89      
3 A 1465 1449 0.04      
4 A 1346 1331 2.89      
5 A 1165 1152 1.91      
6 A 995 984 82.04      
7 A 539 533 56.11      
8 A 367 363 53.20      
9 B 3680 3639 31.45      
10 B 2999 2966 37.49      
11 B 1389 1373 50.40      
12 B 1323 1308 20.88      
13 B 1004 993 274.12      
14 B 973 962 7.55      
15 B 373 369 152.64      

Unscaled Zero Point Vibrational Energy (zpe) 12125.8 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 11990.0 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 PBEPBEultrafine/aug-cc-pVTZ
ABC
1.38664 0.33295 0.29605

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/aug-cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.530
O2 0.000 1.183 -0.248
O3 0.000 -1.183 -0.248
H4 -0.899 -0.077 1.162
H5 0.899 0.077 1.162
H6 -0.825 1.194 -0.764
H7 0.825 -1.194 -0.764

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.41601.41601.10141.10141.94471.9447
O21.41602.36532.09402.00460.97282.5682
O31.41602.36532.00462.09402.56820.9728
H41.10142.09402.00461.80442.30932.8157
H51.10142.00462.09401.80442.81572.3093
H61.94470.97282.56822.30932.81572.9025
H71.94472.56820.97282.81572.30932.9025

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 107.547 C1 O3 H7 107.547
O2 C1 O3 113.280 O2 C1 H4 111.969
O2 C1 H5 104.873 O3 C1 H4 104.873
O3 C1 H5 111.969 H4 C1 H5 110.005
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.003      
2 O -0.394      
3 O -0.394      
4 H 0.265      
5 H 0.265      
6 H 0.130      
7 H 0.130      


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 -0.088 0.088
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.130 -3.408 0.000
y -3.408 -22.728 0.000
z 0.000 0.000 -17.157
Traceless
 xyz
x 3.813 -3.408 0.000
y -3.408 -6.085 0.000
z 0.000 0.000 2.272
Polar
3z2-r24.545
x2-y26.598
xy-3.408
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.916 -0.175 0.000
y -0.175 4.548 0.000
z 0.000 0.000 4.171


<r2> (average value of r2) Å2
<r2> 46.424
(<r2>)1/2 6.814