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 C6H4Cl2 (1,2-dichlorobenzene)

using model chemistry: HF/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-1148.636841
Energy at 298.15K-1148.641522
HF Energy-1148.636841
Nuclear repulsion energy472.511848
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/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3367 3052 5.06      
2 A1 3348 3035 9.21      
3 A1 1748 1585 3.65      
4 A1 1623 1471 68.61      
5 A1 1305 1183 1.06      
6 A1 1241 1125 42.15      
7 A1 1170 1061 0.65      
8 A1 1126 1020 8.78      
9 A1 721 654 15.63      
10 A1 516 468 7.33      
11 A1 218 197 0.00      
12 A2 1117 1012 0.00      
13 A2 982 890 0.00      
14 A2 794 720 0.00      
15 A2 574 520 0.00      
16 A2 151 137 0.00      
17 B1 1085 984 2.04      
18 B1 850 771 75.16      
19 B1 495 449 5.47      
20 B1 259 234 1.07      
21 B2 3363 3048 4.90      
22 B2 3332 3021 1.48      
23 B2 1764 1599 6.66      
24 B2 1585 1436 21.35      
25 B2 1383 1253 4.98      
26 B2 1234 1119 3.24      
27 B2 1131 1025 35.12      
28 B2 805 729 18.93      
29 B2 462 419 1.02      
30 B2 364 330 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 19055.3 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 17271.8 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/Def2TZVPP
ABC
0.06415 0.04847 0.02761

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.691 -0.028
C2 0.000 -0.691 -0.028
C3 0.000 1.378 1.170
C4 0.000 -1.378 1.170
C5 0.000 0.691 2.364
C6 0.000 -0.691 2.364
Cl7 0.000 1.598 -1.499
Cl8 0.000 -1.598 -1.499
H9 0.000 2.449 1.155
H10 0.000 -2.449 1.155
H11 0.000 1.234 3.288
H12 0.000 -1.234 3.288

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C11.38111.38192.39072.39232.76241.72782.72022.11943.35493.36093.8345
C21.38112.39071.38192.76242.39232.72021.72783.35492.11943.83453.3609
C31.38192.39072.75551.37712.38802.67833.99751.07103.82642.12283.3623
C42.39071.38192.75552.38801.37713.99752.67833.82641.07103.36232.1228
C52.39232.76241.37712.38801.38133.96784.48982.13343.36391.07222.1349
C62.76242.39232.38801.37711.38134.48983.96783.36392.13342.13491.0722
Cl71.72782.72022.67833.99753.96784.48983.19602.78704.83934.80105.5619
Cl82.72021.72783.99752.67834.48983.96783.19604.83932.78705.56194.8010
H92.11943.35491.07103.82642.13343.36392.78704.83934.89732.45494.2556
H103.35492.11943.82641.07103.36392.13344.83932.78704.89734.25562.4549
H113.36093.83452.12283.36231.07222.13494.80105.56192.45494.25562.4674
H123.83453.36093.36232.12282.13491.07225.56194.80104.25562.45492.4674

picture of 1,2-dichlorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 119.822 C1 C2 Cl8 121.682
C1 C3 C5 120.246 C1 C3 H9 119.004
C2 C1 C3 119.822 C2 C1 Cl7 121.682
C2 C4 C6 120.246 C2 C4 H10 119.004
C3 C1 Cl7 118.497 C3 C5 C6 119.933
C3 C5 H11 119.636 C4 C2 Cl8 118.497
C4 C6 C5 119.933 C4 C6 H12 119.636
C5 C3 H9 120.750 C5 C6 H12 120.431
C6 C4 H10 120.750 C6 C5 H11 120.431
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.068      
2 C 0.068      
3 C -0.095      
4 C -0.095      
5 C -0.094      
6 C -0.094      
7 Cl -0.080      
8 Cl -0.080      
9 H 0.100      
10 H 0.100      
11 H 0.101      
12 H 0.101      


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 2.823 2.823
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -63.270 0.000 0.000
y 0.000 -56.668 0.000
z 0.000 0.000 -55.349
Traceless
 xyz
x -7.262 0.000 0.000
y 0.000 2.642 0.000
z 0.000 0.000 4.620
Polar
3z2-r29.240
x2-y2-6.602
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.478 0.000 0.000
y 0.000 14.335 0.000
z 0.000 0.000 16.543


<r2> (average value of r2) Å2
<r2> 357.106
(<r2>)1/2 18.897