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 CH2ClCH2OH (2-Chloroethanol)

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 CS 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-610.477022
Energy at 298.15K-610.482965
HF Energy-610.043624
Nuclear repulsion energy157.095249
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' 3526 3354 2.34      
2 A' 3167 3013 8.56      
3 A' 3070 2920 24.27      
4 A' 1632 1553 1.57      
5 A' 1585 1508 5.39      
6 A' 1500 1427 2.26      
7 A' 1357 1291 1.21      
8 A' 1269 1207 56.20      
9 A' 1027 977 6.31      
10 A' 1001 953 47.57      
11 A' 756 719 73.35      
12 A' 381 362 2.15      
13 A' 250 238 13.19      
14 A" 3234 3077 4.93      
15 A" 3113 2961 41.59      
16 A" 1372 1306 0.65      
17 A" 1238 1177 0.37      
18 A" 1109 1055 2.78      
19 A" 854 813 0.10      
20 A" 257 245 153.65      
21 A" 130 124 14.71      

Unscaled Zero Point Vibrational Energy (zpe) 15914.2 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 15139.2 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 MP2/3-21G*
ABC
0.95584 0.07987 0.07584

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.973 -0.578 0.000
C2 0.000 0.604 0.000
Cl3 -1.710 -0.005 0.000
O4 2.294 0.068 0.000
H5 0.803 -1.195 0.891
H6 0.803 -1.195 -0.891
H7 0.144 1.210 0.893
H8 0.144 1.210 -0.893
H9 2.982 -0.646 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 O4 H5 H6 H7 H8 H9
C11.53142.74351.47111.09691.09692.16372.16372.0105
C21.53141.81512.35592.16222.16221.08851.08853.2338
Cl32.74351.81514.00472.91982.91982.38962.38964.7358
O41.47112.35594.00472.14782.14782.59272.59270.9920
H51.09692.16222.91982.14781.78302.49283.06572.4175
H61.09692.16222.91982.14781.78303.06572.49282.4175
H72.16371.08852.38962.59272.49283.06571.78603.5065
H82.16371.08852.38962.59273.06572.49281.78603.5065
H92.01053.23384.73580.99202.41752.41753.50653.5065

picture of 2-Chloroethanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl3 109.838 C1 C2 H7 110.204
C1 C2 H8 110.204 C1 O4 H9 107.838
C2 C1 O4 103.359 C2 C1 H5 109.595
C2 C1 H6 109.595 Cl3 C2 H7 108.148
Cl3 C2 H8 108.148 O4 C1 H5 112.708
O4 C1 H6 112.708 H5 C1 H6 108.731
H7 C2 H8 110.249
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability