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

using model chemistry: mPW1PW91/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 mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-190.977651
Energy at 298.15K-190.982880
HF Energy-190.977651
Nuclear repulsion energy81.847107
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 mPW1PW91/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 3862 3704 23.87      
2 A 3043 2919 63.46      
3 A 1534 1471 0.26      
4 A 1403 1345 3.42      
5 A 1218 1168 0.46      
6 A 1060 1017 99.75      
7 A 569 546 65.21      
8 A 374 359 57.66      
9 B 3861 3703 42.25      
10 B 3089 2963 49.07      
11 B 1453 1394 60.60      
12 B 1382 1325 31.94      
13 B 1102 1057 244.85      
14 B 1016 975 24.70      
15 B 374 359 167.08      

Unscaled Zero Point Vibrational Energy (zpe) 12669.1 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 12152.2 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 mPW1PW91/cc-pVTZ
ABC
1.41148 0.34319 0.30423

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.525
O2 0.000 1.165 -0.246
O3 0.000 -1.165 -0.246
H4 -0.889 -0.073 1.157
H5 0.889 0.073 1.157
H6 -0.805 1.172 -0.768
H7 0.805 -1.172 -0.768

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.39731.39731.09281.09281.92201.9220
O21.39732.33072.07121.98770.95972.5264
O31.39732.33071.98772.07122.52640.9597
H41.09282.07121.98771.78382.29372.7897
H51.09281.98772.07121.78382.78972.2937
H61.92200.95972.52642.29372.78972.8430
H71.92202.52640.95972.78972.29372.8430

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 107.816 C1 O3 H7 107.816
O2 C1 O3 113.021 O2 C1 H4 111.983
O2 C1 H5 105.268 O3 C1 H4 105.268
O3 C1 H5 111.983 H4 C1 H5 109.404
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.189      
2 O -0.331      
3 O -0.331      
4 H 0.041      
5 H 0.041      
6 H 0.195      
7 H 0.195      


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 -0.221 0.221
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.583 -3.340 0.000
y -3.340 -22.000 0.000
z 0.000 0.000 -16.343
Traceless
 xyz
x 3.589 -3.340 0.000
y -3.340 -6.037 0.000
z 0.000 0.000 2.448
Polar
3z2-r24.897
x2-y26.417
xy-3.340
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.184 -0.152 0.000
y -0.152 3.414 0.000
z 0.000 0.000 3.298


<r2> (average value of r2) Å2
<r2> 45.066
(<r2>)1/2 6.713