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 C6H5Cl (chlorobenzene)

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 C2V 1A1
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-50.510313
Energy at 298.15K-50.515906
Nuclear repulsion energy130.853228
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 A1 3417 3068 2.13      
2 A1 3400 3053 36.04      
3 A1 3366 3022 0.06      
4 A1 1784 1602 29.40      
5 A1 1629 1463 47.96      
6 A1 1275 1145 0.00      
7 A1 1195 1074 43.37      
8 A1 1110 997 17.44      
9 A1 1063 954 11.60      
10 A1 748 672 27.57      
11 A1 439 395 3.40      
12 A2 1109 996 0.00      
13 A2 962 864 0.00      
14 A2 445 399 0.00      
15 B1 1119 1005 0.11      
16 B1 1043 936 3.77      
17 B1 850 763 102.79      
18 B1 732 658 12.52      
19 B1 511 459 11.07      
20 B1 207 186 0.22      
21 B2 3415 3066 22.14      
22 B2 3381 3036 19.03      
23 B2 1783 1601 2.23      
24 B2 1586 1425 6.86      
25 B2 1434 1287 0.11      
26 B2 1335 1199 0.52      
27 B2 1217 1093 0.41      
28 B2 1167 1048 3.40      
29 B2 650 584 0.27      
30 B2 312 280 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 21340.9 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 19164.1 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 HF/CEP-31G*
ABC
0.18690 0.05178 0.04055

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Cl1 0.000 0.000 2.601
C2 0.000 0.000 0.847
C3 0.000 1.225 0.163
C4 0.000 -1.225 0.163
C5 0.000 1.216 -1.243
C6 0.000 -1.216 -1.243
C7 0.000 0.000 -1.948
H8 0.000 2.153 0.712
H9 0.000 -2.153 0.712
H10 0.000 2.154 -1.778
H11 0.000 -2.154 -1.778
H12 0.000 0.000 -3.028

Atom - Atom Distances (Å)
  Cl1 C2 C3 C4 C5 C6 C7 H8 H9 H10 H11 H12
Cl11.75402.72842.72844.03094.03094.54862.86392.86394.87994.87995.6284
C21.75401.40311.40312.41712.41712.79452.15702.15703.39543.39543.8744
C32.72841.40312.45051.40542.81672.44061.07783.42232.15183.89683.4178
C42.72841.40312.45052.81671.40542.44063.42231.07783.89682.15183.4178
C54.03092.41711.40542.81672.43161.40562.16743.89441.08023.41182.1599
C64.03092.41712.81671.40542.43161.40563.89442.16743.41181.08022.1599
C74.54862.79452.44062.44061.40561.40563.42183.42182.16042.16041.0798
H82.86392.15701.07783.42232.16743.89443.42184.30552.49014.97464.3150
H92.86392.15703.42231.07783.89442.16743.42184.30554.97462.49014.3150
H104.87993.39542.15183.89681.08023.41182.16042.49014.97464.30752.4899
H114.87993.39543.89682.15183.41181.08022.16044.97462.49014.30752.4899
H125.62843.87443.41783.41782.15992.15991.07984.31504.31502.48992.4899

picture of chlorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl1 C2 C3 119.164 Cl1 C2 C4 119.164
C2 C3 C5 118.778 C2 C3 H8 120.215
C2 C4 C6 118.778 C2 C4 H9 120.215
C3 C2 C4 121.673 C3 C5 C7 120.509
C3 C5 H10 119.349 C4 C6 C7 120.509
C4 C6 H11 119.349 C5 C3 H8 121.006
C5 C7 C6 119.753 C5 C7 H12 120.123
C6 C4 H9 121.006 C6 C7 H12 120.123
C7 C5 H10 120.142 C7 C6 H11 120.142
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 Cl -0.110      
2 C -0.272      
3 C -0.052      
4 C -0.052      
5 C -0.367      
6 C -0.367      
7 C -0.231      
8 H 0.309      
9 H 0.309      
10 H 0.277      
11 H 0.277      
12 H 0.277      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.135 2.135
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -51.501 0.000 0.000
y 0.000 -41.030 0.000
z 0.000 0.000 -47.016
Traceless
 xyz
x -7.478 0.000 0.000
y 0.000 8.229 0.000
z 0.000 0.000 -0.751
Polar
3z2-r2-1.501
x2-y2-10.471
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.584 0.000 0.000
y 0.000 10.962 0.000
z 0.000 0.000 14.294


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000