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

using model chemistry: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-189.820582
Energy at 298.15K-189.825768
HF Energy-189.820582
Nuclear repulsion energy78.677349
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 BLYP/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 3282 3264 2.27      
2 A 2941 2925 71.77      
3 A 1531 1523 1.23      
4 A 1383 1375 2.32      
5 A 1171 1164 4.23      
6 A 911 906 86.34      
7 A 556 553 111.93      
8 A 374 372 12.52      
9 B 3285 3267 6.40      
10 B 2981 2964 67.36      
11 B 1405 1397 50.06      
12 B 1342 1335 10.94      
13 B 977 972 34.68      
14 B 947 942 155.96      
15 B 421 419 203.68      

Unscaled Zero Point Vibrational Energy (zpe) 11753.6 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 11689.0 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 BLYP/3-21G
ABC
1.32019 0.31546 0.27953

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.549
O2 0.000 1.220 -0.251
O3 0.000 -1.220 -0.251
H4 -0.896 -0.113 1.184
H5 0.896 0.113 1.184
H6 -0.833 1.173 -0.824
H7 0.833 -1.173 -0.824

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.45911.45911.10401.10401.98831.9883
O21.45912.44032.15382.02231.01172.5975
O31.45912.44032.02232.15382.59751.0117
H41.10402.15382.02231.80622.38482.8538
H51.10402.02232.15381.80622.85382.3848
H61.98831.01172.59752.38482.85382.8766
H71.98832.59751.01172.85382.38482.8766

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 105.737 C1 O3 H7 105.737
O2 C1 O3 113.483 O2 C1 H4 113.619
O2 C1 H5 103.310 O3 C1 H4 103.310
O3 C1 H5 113.619 H4 C1 H5 109.775
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.023      
2 O -0.506      
3 O -0.506      
4 H 0.180      
5 H 0.180      
6 H 0.315      
7 H 0.315      


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 -0.360 0.360
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.612 -3.385 0.000
y -3.385 -22.316 0.000
z 0.000 0.000 -15.837
Traceless
 xyz
x 3.464 -3.385 0.000
y -3.385 -6.591 0.000
z 0.000 0.000 3.127
Polar
3z2-r26.255
x2-y26.704
xy-3.385
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.681 -0.211 0.000
y -0.211 2.774 0.000
z 0.000 0.000 2.695


<r2> (average value of r2) Å2
<r2> 47.762
(<r2>)1/2 6.911