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

using model chemistry: LSDA/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 LSDA/3-21G*
 hartrees
Energy at 0K-188.935718
Energy at 298.15K-188.940970
HF Energy-188.935718
Nuclear repulsion energy80.160549
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 LSDA/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 3378 3317 0.01      
2 A 2931 2878 69.28      
3 A 1512 1485 0.03      
4 A 1374 1350 2.52      
5 A 1183 1162 1.52      
6 A 978 960 105.90      
7 A 589 578 127.93      
8 A 381 374 17.74      
9 B 3381 3320 0.90      
10 B 2969 2916 61.13      
11 B 1394 1369 36.14      
12 B 1346 1322 16.91      
13 B 1049 1030 185.59      
14 B 985 968 38.63      
15 B 434 426 241.80      

Unscaled Zero Point Vibrational Energy (zpe) 11942.0 cm-1
Scaled (by 0.982) Zero Point Vibrational Energy (zpe) 11727.0 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 LSDA/3-21G*
ABC
1.35808 0.33051 0.29281

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.534
O2 0.000 1.190 -0.246
O3 0.000 -1.190 -0.246
H4 -0.893 -0.114 1.181
H5 0.893 0.114 1.181
H6 -0.828 1.160 -0.816
H7 0.828 -1.160 -0.816

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.42221.42221.10881.10881.96321.9632
O21.42222.37932.12901.99711.00602.5562
O31.42222.37931.99712.12902.55621.0060
H41.10882.12901.99711.80082.37012.8363
H51.10881.99712.12901.80082.83632.3701
H61.96321.00602.55622.37012.83632.8511
H71.96322.55621.00602.83632.37012.8511

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.648 C1 O3 H7 106.648
O2 C1 O3 113.549 O2 C1 H4 113.959
O2 C1 H5 103.504 O3 C1 H4 103.504
O3 C1 H5 113.959 H4 C1 H5 108.585
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.059      
2 O -0.524      
3 O -0.524      
4 H 0.211      
5 H 0.211      
6 H 0.343      
7 H 0.343      


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 -0.529 0.529
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.517 -3.628 0.000
y -3.628 -22.248 0.000
z 0.000 0.000 -15.759
Traceless
 xyz
x 3.486 -3.628 0.000
y -3.628 -6.610 0.000
z 0.000 0.000 3.124
Polar
3z2-r26.248
x2-y26.731
xy-3.628
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.665 -0.205 0.000
y -0.205 2.644 0.000
z 0.000 0.000 2.686


<r2> (average value of r2) Å2
<r2> 46.269
(<r2>)1/2 6.802