return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3CHOH (1-hydroxy-ethyl radical)

using model chemistry: ROMP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A
Energy calculated at ROMP2/6-31G*
 hartrees
Energy at 0K-153.869625
Energy at 298.15K-153.874689
HF Energy-153.446937
Nuclear repulsion energy74.893509
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 ROMP2/6-31G*
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 3790 3790        
2 A 3211 3211        
3 A 3189 3189        
4 A 3164 3164        
5 A 3075 3075        
6 A 1560 1560        
7 A 1535 1535        
8 A 1506 1506        
9 A 1446 1446        
10 A 1323 1323        
11 A 1241 1241        
12 A 1101 1101        
13 A 1077 1077        
14 A 962 962        
15 A 677 677        
16 A 420 420        
17 A 382 382        
18 A 195 195        

Unscaled Zero Point Vibrational Energy (zpe) 14926.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14926.5 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 ROMP2/6-31G*
ABC
1.50919 0.31744 0.27780

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.090 0.517 -0.113
C2 1.223 -0.167 0.013
O3 -1.162 -0.344 0.026
H4 -0.222 1.522 0.289
H5 1.270 -1.017 -0.674
H6 2.035 0.523 -0.228
H7 1.391 -0.553 1.028
H8 -1.980 0.177 -0.023

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.48591.38131.08992.12572.12862.15361.9220
C21.48592.39122.23991.09351.09261.09903.2214
O31.38132.39122.10482.61883.32202.74990.9712
H41.08992.23992.10483.09822.52242.72982.2343
H52.12571.09352.61883.09821.77591.76843.5232
H62.12861.09263.32202.52241.77591.77504.0351
H72.15361.09902.74992.72981.76841.77503.6053
H81.92203.22140.97122.23433.52324.03513.6053

picture of 1-hydroxy-ethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.063 C1 C2 H6 110.347
C1 C2 H7 111.979 C1 O3 H8 108.304
C2 C1 O3 112.966 C2 C1 H4 120.044
O3 C1 H4 116.308 H5 C2 H6 108.651
H5 C2 H7 107.520 H6 C2 H7 108.173
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.110      
2 C -0.510      
3 O -0.706      
4 H 0.143      
5 H 0.182      
6 H 0.163      
7 H 0.170      
8 H 0.447      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 51.354
(<r2>)1/2 7.166