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 CH3CClCHCH3 (2-Butene, 2-chloro-, (E)-)

using model chemistry: HF/6-31G**

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/6-31G**
 hartrees
Energy at 0K-615.022819
Energy at 298.15K-615.029971
Nuclear repulsion energy211.766409
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/6-31G**
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' 3346 3020 9.98      
2 A' 3307 2985 28.35      
3 A' 3286 2966 18.11      
4 A' 3200 2888 17.63      
5 A' 3185 2875 40.00      
6 A' 1905 1719 12.41      
7 A' 1624 1466 7.87      
8 A' 1613 1456 3.81      
9 A' 1562 1410 3.18      
10 A' 1552 1400 1.96      
11 A' 1476 1333 1.51      
12 A' 1255 1133 47.58      
13 A' 1174 1060 21.66      
14 A' 1085 979 7.48      
15 A' 983 887 21.54      
16 A' 723 653 27.20      
17 A' 470 425 9.79      
18 A' 374 338 0.35      
19 A' 291 262 0.56      
20 A" 3258 2941 19.97      
21 A" 3235 2920 29.25      
22 A" 1612 1455 9.13      
23 A" 1604 1448 2.56      
24 A" 1173 1059 2.71      
25 A" 1166 1053 0.56      
26 A" 956 863 16.44      
27 A" 492 444 4.07      
28 A" 253 228 0.17      
29 A" 175 158 0.21      
30 A" 126 114 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 23230.6 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 20968.0 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/6-31G**
ABC
0.24413 0.08051 0.06191

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.197 -1.076 0.000
H2 -2.710 -0.124 0.000
H3 -2.523 -1.633 0.874
H4 -2.523 -1.633 -0.874
C5 0.000 0.171 0.000
H6 -0.156 -1.875 0.000
C7 -0.700 -0.946 0.000
H8 -0.103 2.114 0.876
H9 -0.103 2.114 -0.876
C10 -0.476 1.594 0.000
Cl11 1.759 0.054 0.000
H12 -1.555 1.650 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 H9 C10 Cl11 H12
C11.08111.08641.08642.52622.19191.50323.91513.91513.17614.11472.7999
H21.08111.75371.75372.72643.09662.17223.54633.54632.81844.47332.1167
H31.08641.75371.74793.22212.53442.13544.46064.79143.91974.68483.5320
H41.08641.75371.74793.22212.53442.13544.79144.46063.91974.68483.5320
C52.52622.72643.22213.22212.05171.31782.13382.13381.50001.76322.1461
H62.19193.09662.53442.53442.05171.07634.08434.08433.48312.71863.7920
C71.50322.17222.13542.13541.31781.07633.23823.23822.54912.65452.7328
H83.91513.54634.46064.79142.13384.08433.23821.75121.08492.91161.7585
H93.91513.54634.79144.46062.13384.08433.23821.75121.08492.91161.7585
C103.17612.81843.91973.91971.50003.48312.54911.08491.08492.71391.0810
Cl114.11474.47334.68484.68481.76322.71862.65452.91162.91162.71393.6786
H122.79992.11673.53203.53202.14613.79202.73281.75851.75851.08103.6786

picture of 2-Butene, 2-chloro-, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C7 C5 127.025 C1 C7 H6 115.364
H2 C1 H3 108.008 H2 C1 H4 108.008
H2 C1 C7 113.383 H3 C1 H4 107.110
H3 C1 C7 110.055 H4 C1 C7 110.055
C5 C7 H6 117.611 C5 C10 H8 110.245
C5 C10 H9 110.245 C5 C10 H12 111.470
C7 C5 C10 129.439 C7 C5 Cl11 118.273
H8 C10 H9 107.634 H8 C10 H12 108.571
H9 C10 H12 108.571 C10 C5 Cl11 112.289
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.360 0.069    
2 H 0.124 0.005    
3 H 0.134 0.011    
4 H 0.134 0.011    
5 C -0.124 0.039    
6 H 0.156 0.119    
7 C -0.095 -0.171    
8 H 0.146 0.044    
9 H 0.146 0.044    
10 C -0.333 -0.041    
11 Cl -0.056 -0.181    
12 H 0.129 0.050    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.356 0.115 0.000 2.358
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.252 0.347 0.000
y 0.347 -35.654 0.000
z 0.000 0.000 -39.684
Traceless
 xyz
x -1.583 0.347 0.000
y 0.347 3.814 0.000
z 0.000 0.000 -2.231
Polar
3z2-r2-4.462
x2-y2-3.598
xy0.347
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.638 1.480 0.000
y 1.480 8.297 0.000
z 0.000 0.000 4.891


<r2> (average value of r2) Å2
<r2> 183.631
(<r2>)1/2 13.551