return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for CH3CHOH (1-hydroxy-ethyl radical)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A
Energy calculated at CBS-Q
 hartrees
Energy at 0K-154.119050
Energy at 298.15K-154.113703
HF Energy-153.448974
Nuclear repulsion energy75.295836
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 4132 4132 55.26      
2 A 3278 3278 84.58      
3 A 3261 3261 11.68      
4 A 3234 3234 33.15      
5 A 3161 3161 33.18      
6 A 1628 1628 1.29      
7 A 1609 1609 5.14      
8 A 1580 1580 18.41      
9 A 1518 1518 2.45      
10 A 1409 1409 185.49      
11 A 1285 1285 29.44      
12 A 1150 1150 18.09      
13 A 1127 1127 25.02      
14 A 989 989 7.53      
15 A 734 734 11.18      
16 A 436 436 12.61      
17 A 362 362 172.03      
18 A 199 199 5.23      

Unscaled Zero Point Vibrational Energy (zpe) 15545.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15545.3 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 CBS-Q
ABC
1.50805 0.31690 0.27752

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.099 0.512 -0.116
C2 1.227 -0.165 0.011
O3 -1.159 -0.336 0.031
H4 -0.230 1.503 0.303
H5 1.288 -1.008 -0.674
H6 2.033 0.528 -0.219
H7 1.386 -0.549 1.022
H8 -1.972 0.132 -0.050

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.49471.36521.08372.13192.13452.15111.9123
C21.49472.39222.23401.08771.08751.09243.2136
O31.36522.39222.07782.63333.31592.73950.9417
H41.08372.23402.07783.09212.51872.70862.2448
H52.13191.08772.63333.09211.76631.75963.5092
H62.13451.08753.31592.51871.76631.76544.0280
H72.15111.09242.73952.70861.75961.76543.5905
H81.91233.21360.94172.24483.50924.02803.5905

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 110.285 C1 C2 H6 110.517
C1 C2 H7 111.552 C1 O3 H8 110.645
C2 C1 O3 113.454 C2 C1 H4 119.233
O3 C1 H4 115.612 H5 C2 H6 108.589
H5 C2 H7 107.627 H6 C2 H7 108.164
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability