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: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-152.882368
Energy at 298.15K-152.887376
HF Energy-152.598839
Nuclear repulsion energy73.766952
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 MP2/3-21G*
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 3549 3376 10.39      
2 A 3176 3022 30.95      
3 A 3150 2997 31.17      
4 A 3133 2980 15.98      
5 A 3056 2907 19.62      
6 A 1601 1523 2.88      
7 A 1578 1502 6.55      
8 A 1496 1423 15.97      
9 A 1480 1408 3.67      
10 A 1311 1247 80.06      
11 A 1189 1131 33.50      
12 A 1121 1066 2.55      
13 A 1063 1011 74.17      
14 A 925 880 5.91      
15 A 688 655 14.18      
16 A 401 381 21.26      
17 A 365 347 161.28      
18 A 178 170 2.83      

Unscaled Zero Point Vibrational Energy (zpe) 14729.8 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 14012.5 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 MP2/3-21G*
ABC
1.46333 0.30765 0.26886

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.079 0.533 -0.110
C2 1.241 -0.178 0.012
O3 -1.186 -0.345 0.028
H4 -0.182 1.540 0.296
H5 1.237 -1.060 -0.636
H6 2.054 0.486 -0.295
H7 1.434 -0.515 1.040
H8 -2.023 0.178 -0.042

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.50441.41961.09002.13252.14152.17091.9775
C21.50442.43232.24881.09421.09401.09973.2839
O31.41962.43232.15202.61183.36022.81370.9900
H41.09002.24882.15203.10502.54122.71862.3147
H52.13251.09422.61183.10501.78231.77373.5375
H62.14151.09403.36022.54121.78231.78034.0967
H72.17091.09972.81372.71861.77371.78033.6886
H81.97753.28390.99002.31473.53754.09673.6886

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 109.279 C1 C2 H6 110.004
C1 C2 H7 112.020 C1 O3 H8 109.004
C2 C1 O3 112.542 C2 C1 H4 119.319
O3 C1 H4 117.472 H5 C2 H6 109.078
H5 C2 H7 107.898 H6 C2 H7 108.497
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability