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 CH2FCH2Cl (Ethane, 1-chloro-2-fluoro-)

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'
1 2 no C1 1A

Conformer 1 (CS)

Jump to S1C2
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-51.856313
Energy at 298.15K-51.861330
HF Energy-51.856313
Nuclear repulsion energy68.103469
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' 3319 2981 41.84      
2 A' 3299 2963 35.68      
3 A' 1654 1485 0.02      
4 A' 1633 1467 10.59      
5 A' 1560 1401 7.40      
6 A' 1405 1262 32.60      
7 A' 1169 1050 146.69      
8 A' 1146 1029 33.31      
9 A' 837 752 75.67      
10 A' 408 366 3.49      
11 A' 262 235 15.01      
12 A" 3396 3050 41.64      
13 A" 3359 3017 28.85      
14 A" 1404 1261 0.36      
15 A" 1326 1191 3.53      
16 A" 1151 1034 2.73      
17 A" 846 760 0.07      
18 A" 137 123 13.84      

Unscaled Zero Point Vibrational Energy (zpe) 14156.3 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 12712.4 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
0.99486 0.07947 0.07569

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 0.000 0.623 0.000
C2 1.000 -0.534 0.000
Cl3 -1.671 -0.046 0.000
F4 2.266 0.010 0.000
H5 0.109 1.235 0.888
H6 0.109 1.235 -0.888
H7 0.895 -1.149 0.890
H8 0.895 -1.149 -0.890

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6 H7 H8
C11.52971.80002.34761.08371.08372.17552.1755
C21.52972.71551.37752.17082.17081.08681.0868
Cl31.80002.71553.93742.36602.36602.93122.9312
F42.34761.37753.93742.63482.63482.00352.0035
H51.08372.17082.36602.63481.77542.51023.0759
H61.08372.17082.36602.63481.77543.07592.5102
H72.17551.08682.93122.00352.51023.07591.7799
H82.17551.08682.93122.00353.07592.51021.7799

picture of Ethane, 1-chloro-2-fluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 107.592 C1 C2 H7 111.376
C1 C2 H8 111.376 C2 C1 Cl3 109.015
C2 C1 H5 111.186 C2 C1 H6 111.186
Cl3 C1 H5 107.660 Cl3 C1 H6 107.660
F4 C2 H7 108.206 F4 C2 H8 108.206
H5 C1 H6 109.996 H7 C2 H8 109.950
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.116      
2 C 0.026      
3 Cl -0.205      
4 F -0.304      
5 H 0.161      
6 H 0.161      
7 H 0.139      
8 H 0.139      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.192 0.016 0.000 0.193
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.595 -0.727 0.000
y -0.727 -28.059 0.000
z 0.000 0.000 -28.682
Traceless
 xyz
x -10.224 -0.727 0.000
y -0.727 5.579 0.000
z 0.000 0.000 4.645
Polar
3z2-r29.291
x2-y2-10.535
xy-0.727
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.827 0.517 0.000
y 0.517 3.925 0.000
z 0.000 0.000 3.364


<r2> (average value of r2) Å2
<r2> 92.527
(<r2>)1/2 9.619

Conformer 2 (C1)

Jump to S1C1
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-51.854631
Energy at 298.15K-51.859747
HF Energy-51.854631
Nuclear repulsion energy69.159171
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 3380 3036 29.50      
2 A 3343 3002 47.53      
3 A 3308 2971 44.96      
4 A 3272 2938 52.06      
5 A 1640 1473 0.25      
6 A 1606 1442 14.16      
7 A 1563 1404 24.78      
8 A 1461 1312 57.96      
9 A 1383 1242 0.06      
10 A 1320 1186 5.78      
11 A 1213 1089 97.57      
12 A 1155 1037 28.15      
13 A 1051 944 5.22      
14 A 925 831 17.08      
15 A 736 661 50.03      
16 A 493 443 15.94      
17 A 299 269 0.91      
18 A 137 123 3.22      

Unscaled Zero Point Vibrational Energy (zpe) 14143.0 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 12700.4 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
0.45910 0.10725 0.09442

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.087 0.841 -0.298
C2 1.211 0.402 0.371
Cl3 -1.444 -0.283 0.065
F4 1.681 -0.748 -0.210
H5 -0.378 1.821 0.069
H6 0.028 0.869 -1.376
H7 1.964 1.178 0.229
H8 1.071 0.214 1.433

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6 H7 H8
C11.52471.79942.37851.08571.08432.14372.1745
C21.52472.75881.37142.15162.16091.09041.0870
Cl31.79942.75883.17112.35882.35983.71132.9057
F42.37851.37143.17113.30372.58951.99481.9990
H51.08572.15162.35883.30371.77662.43382.5577
H61.08432.16092.35982.58951.77662.53323.0666
H72.14371.09043.71131.99482.43382.53321.7819
H82.17451.08702.90571.99902.55773.06661.7819

picture of Ethane, 1-chloro-2-fluoro- state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 110.319 C1 C2 H7 108.989
C1 C2 H8 111.644 C2 C1 Cl3 111.922
C2 C1 H5 109.883 C2 C1 H6 110.713
Cl3 C1 H5 107.079 Cl3 C1 H6 107.224
F4 C2 H7 107.703 F4 C2 H8 108.254
H5 C1 H6 109.917 H7 C2 H8 109.850
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.131      
2 C 0.036      
3 Cl -0.193      
4 F -0.295      
5 H 0.147      
6 H 0.161      
7 H 0.128      
8 H 0.147      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.012 3.063 0.419 3.253
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.401 2.695 1.166
y 2.695 -28.775 -0.566
z 1.166 -0.566 -28.596
Traceless
 xyz
x -4.716 2.695 1.166
y 2.695 2.224 -0.566
z 1.166 -0.566 2.492
Polar
3z2-r24.985
x2-y2-4.626
xy2.695
xz1.166
yz-0.566


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.240 0.966 -0.148
y 0.966 4.327 -0.237
z -0.148 -0.237 3.555


<r2> (average value of r2) Å2
<r2> 83.011
(<r2>)1/2 9.111