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: CISD/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 CISD/3-21G
 hartrees
Energy at 0K-152.884377
Energy at 298.15K-152.889362
HF Energy-152.599364
Nuclear repulsion energy73.877730
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 CISD/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 3629 3416 7.60      
2 A 3176 2990 43.78      
3 A 3157 2972 15.86      
4 A 3132 2948 17.70      
5 A 3059 2879 22.69      
6 A 1603 1509 2.91      
7 A 1581 1488 6.44      
8 A 1506 1418 15.14      
9 A 1487 1400 3.69      
10 A 1323 1246 97.89      
11 A 1199 1129 30.34      
12 A 1120 1054 4.13      
13 A 1074 1011 65.30      
14 A 927 873 4.66      
15 A 669 630 13.76      
16 A 401 377 17.17      
17 A 350 329 170.64      
18 A 172 162 3.18      

Unscaled Zero Point Vibrational Energy (zpe) 14781.8 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 13914.1 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 CISD/3-21G
ABC
1.47237 0.30789 0.26924

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.081 0.531 -0.106
C2 1.241 -0.177 0.010
O3 -1.184 -0.343 0.030
H4 -0.188 1.540 0.289
H5 1.243 -1.052 -0.645
H6 2.054 0.491 -0.285
H7 1.430 -0.524 1.036
H8 -2.023 0.164 -0.055

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.50481.41421.08862.13332.14302.16831.9775
C21.50482.43132.25151.09351.09321.09883.2830
O31.41422.43132.14632.61713.35892.80690.9836
H41.08862.25152.14633.10482.54062.72692.3201
H52.13331.09352.61713.10481.78091.77203.5347
H62.14301.09323.35892.54061.78091.77924.0971
H72.16831.09882.80692.72691.77201.77923.6859
H81.97753.28300.98362.32013.53474.09713.6859

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 109.359 C1 C2 H6 110.144
C1 C2 H7 111.831 C1 O3 H8 109.808
C2 C1 O3 112.762 C2 C1 H4 119.622
O3 C1 H4 117.486 H5 C2 H6 109.065
H5 C2 H7 107.857 H6 C2 H7 108.519
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability