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: ROMP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A
Energy calculated at ROMP2/3-21G
 hartrees
Energy at 0K-152.882217
Energy at 298.15K-152.887230
HF Energy-152.595817
Nuclear repulsion energy73.780688
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 ROMP2/3-21G
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 3550 3550        
2 A 3176 3176        
3 A 3148 3148        
4 A 3134 3134        
5 A 3058 3058        
6 A 1600 1600        
7 A 1578 1578        
8 A 1496 1496        
9 A 1480 1480        
10 A 1311 1311        
11 A 1188 1188        
12 A 1120 1120        
13 A 1061 1061        
14 A 925 925        
15 A 687 687        
16 A 401 401        
17 A 367 367        
18 A 176 176        

Unscaled Zero Point Vibrational Energy (zpe) 14727.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14727.2 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 ROMP2/3-21G
ABC
1.46407 0.30775 0.26897

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.080 0.533 -0.110
C2 1.240 -0.178 0.012
O3 -1.186 -0.345 0.028
H4 -0.183 1.540 0.295
H5 1.236 -1.061 -0.635
H6 2.053 0.486 -0.296
H7 1.435 -0.514 1.040
H8 -2.023 0.178 -0.042

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.50431.41891.09012.13232.14142.17101.9769
C21.50432.43182.24871.09421.09411.09963.2834
O31.41892.43182.15162.61093.35952.81420.9900
H41.09012.24872.15163.10502.54132.71832.3142
H52.13231.09422.61093.10501.78231.77383.5368
H62.14141.09413.35952.54131.78231.78024.0960
H72.17101.09962.81422.71831.77381.78023.6889
H81.97693.28340.99002.31423.53684.09603.6889

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 109.268 C1 C2 H6 109.997
C1 C2 H7 112.035 C1 O3 H8 109.010
C2 C1 O3 112.555 C2 C1 H4 119.308
O3 C1 H4 117.485 H5 C2 H6 109.074
H5 C2 H7 107.910 H6 C2 H7 108.492
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.109      
2 C -0.650      
3 O -0.672      
4 H 0.179      
5 H 0.232      
6 H 0.204      
7 H 0.216      
8 H 0.382      


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> 52.540
(<r2>)1/2 7.248