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

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-188.295177
Energy at 298.15K-188.300227
HF Energy-188.295177
Nuclear repulsion energy78.622958
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 B3PW91/STO-3G
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 3737 3307 13.12      
2 A 3237 2865 23.11      
3 A 1641 1452 0.42      
4 A 1570 1389 2.14      
5 A 1262 1117 0.50      
6 A 1063 940 25.50      
7 A 522 462 67.80      
8 A 393 347 20.43      
9 B 3740 3310 49.99      
10 B 3346 2961 8.71      
11 B 1594 1410 39.69      
12 B 1472 1303 17.31      
13 B 1141 1010 56.72      
14 B 1024 906 12.70      
15 B 397 352 105.17      

Unscaled Zero Point Vibrational Energy (zpe) 13068.5 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 11565.6 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 B3PW91/STO-3G
ABC
1.30771 0.31665 0.28157

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.545
O2 0.000 1.218 -0.257
O3 0.000 -1.218 -0.257
H4 -0.903 -0.088 1.198
H5 0.903 0.088 1.198
H6 -0.878 1.122 -0.776
H7 0.878 -1.122 -0.776

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.45841.45841.11841.11841.94221.9422
O21.45842.43672.15402.05201.02462.5527
O31.45842.43672.05202.15402.55271.0246
H41.11842.15402.05201.81532.31482.8526
H51.11842.05202.15401.81532.85262.3148
H61.94221.02462.55272.31482.85262.8493
H71.94222.55271.02462.85262.31482.8493

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 101.496 C1 O3 H7 101.496
O2 C1 O3 113.317 O2 C1 H4 112.761
O2 C1 H5 104.793 O3 C1 H4 104.793
O3 C1 H5 112.761 H4 C1 H5 108.504
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.012      
2 O -0.253      
3 O -0.253      
4 H 0.073      
5 H 0.073      
6 H 0.174      
7 H 0.174      


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 -0.180 0.180
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.452 -2.399 0.000
y -2.399 -20.011 0.000
z 0.000 0.000 -15.249
Traceless
 xyz
x 3.178 -2.399 0.000
y -2.399 -5.160 0.000
z 0.000 0.000 1.982
Polar
3z2-r23.964
x2-y25.559
xy-2.399
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.701 -0.196 0.000
y -0.196 1.658 0.000
z 0.000 0.000 1.593


<r2> (average value of r2) Å2
<r2> 46.716
(<r2>)1/2 6.835