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

using model chemistry: MP2/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-39.410641
Energy at 298.15K-39.415842
HF Energy-39.111903
Nuclear repulsion energy47.085483
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 MP2/CEP-31G
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 3690 3566 10.91      
2 A 3114 3009 75.01      
3 A 1534 1482 0.78      
4 A 1368 1322 3.20      
5 A 1175 1135 4.50      
6 A 960 928 116.06      
7 A 533 515 184.17      
8 A 417 403 42.39      
9 B 3691 3566 18.83      
10 B 3215 3107 53.23      
11 B 1443 1394 50.01      
12 B 1344 1299 25.36      
13 B 996 962 273.30      
14 B 981 948 14.27      
15 B 396 383 263.62      

Unscaled Zero Point Vibrational Energy (zpe) 12428.5 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 12009.7 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 MP2/CEP-31G
ABC
1.30667 0.31073 0.27551

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.560
O2 0.000 1.223 -0.257
O3 0.000 -1.223 -0.257
H4 -0.914 -0.088 1.173
H5 0.914 0.088 1.173
H6 -0.827 1.284 -0.794
H7 0.827 -1.284 -0.794

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.47121.47121.10371.10372.04182.0418
O21.47122.44602.14452.04170.98822.6943
O31.47122.44602.04172.14452.69430.9882
H41.10372.14452.04171.83682.39982.8866
H51.10372.04172.14451.83682.88662.3998
H62.04180.98822.69432.39982.88663.0553
H72.04182.69430.98822.88662.39983.0553

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 110.703 C1 O3 H7 110.703
O2 C1 O3 112.466 O2 C1 H4 111.997
O2 C1 H5 104.006 O3 C1 H4 104.006
O3 C1 H5 111.997 H4 C1 H5 112.626
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability