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 CH3CH2Cl (Ethyl chloride)

using model chemistry: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-28.576306
Energy at 298.15K-28.581863
Nuclear repulsion energy42.692730
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 HF/CEP-31G*
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' 3307 2970 89.46      
2 A' 3292 2957 8.91      
3 A' 3226 2897 41.97      
4 A' 1629 1463 1.39      
5 A' 1623 1457 1.11      
6 A' 1547 1389 2.89      
7 A' 1444 1297 68.48      
8 A' 1173 1053 1.15      
9 A' 1051 944 18.59      
10 A' 722 649 50.78      
11 A' 349 314 3.15      
12 A" 3372 3028 48.95      
13 A" 3315 2977 28.59      
14 A" 1611 1447 5.09      
15 A" 1375 1234 0.78      
16 A" 1171 1051 0.00      
17 A" 836 751 1.72      
18 A" 277 249 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 15660.2 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 14062.9 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 HF/CEP-31G*
ABC
1.04061 0.18019 0.16297

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.314 -0.155 0.000
C2 0.000 0.632 0.000
H3 2.151 0.548 0.000
H4 1.389 -0.786 0.886
H5 1.389 -0.786 -0.886
Cl6 -1.426 -0.483 0.000
H7 -0.100 1.251 0.885
H8 -0.100 1.251 -0.885

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 Cl6 H7 H8
C11.53131.09331.08981.08982.75952.18152.1815
C21.53132.15212.17312.17311.81041.08491.0849
H31.09332.15211.77341.77343.72262.51802.5180
H41.08982.17311.77341.77102.96642.52313.0822
H51.08982.17311.77341.77102.96643.08222.5231
Cl62.75951.81043.72262.96642.96642.35632.3563
H72.18151.08492.51802.52313.08222.35631.7697
H82.18151.08492.51803.08222.52312.35631.7697

picture of Ethyl chloride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl6 111.059 C1 C2 H7 111.860
C1 C2 H8 111.860 C2 C1 H3 109.022
C2 C1 H4 110.884 C2 C1 H5 110.884
H3 C1 H4 108.650 H3 C1 H5 108.650
H4 C1 H5 108.695 Cl6 C2 H7 106.227
Cl6 C2 H8 106.227 H7 C2 H8 109.303
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.285      
2 C -0.151      
3 H 0.113      
4 H 0.128      
5 H 0.128      
6 Cl -0.225      
7 H 0.145      
8 H 0.145      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.128 1.368 0.000 2.530
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.163 -0.422 0.000
y -0.422 -25.227 0.000
z 0.000 0.000 -25.450
Traceless
 xyz
x -2.824 -0.422 0.000
y -0.422 1.579 0.000
z 0.000 0.000 1.245
Polar
3z2-r22.491
x2-y2-2.935
xy-0.422
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.480 0.881 0.000
y 0.881 4.299 0.000
z 0.000 0.000 3.398


<r2> (average value of r2) Å2
<r2> 57.187
(<r2>)1/2 7.562