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: CCSD=FULL/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD=FULL/TZVP
 hartrees
Energy at 0K-1149.906008
Energy at 298.15K 
HF Energy-1148.608694
Nuclear repulsion energy468.665884
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 CCSD=FULL/TZVP
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 3252 3082 5.43      
2 A1 3236 3066 5.79      
3 A1 1646 1560 4.23      
4 A1 1525 1445 54.40      
5 A1 1267 1201 1.07      
6 A1 1194 1131 3.61      
7 A1 1176 1114 32.09      
8 A1 1072 1016 7.25      
9 A1 679 643 13.08      
10 A1 488 463 5.13      
11 A1 206 195 0.00      
12 A2 778 737 0.00      
13 A2 736 697 0.00      
14 A2 310 293 0.00      
15 A2 112 106 0.00      
16 A2 1482i 1404i 0.00      
17 B1 737 698 4.19      
18 B1 714 677 63.77      
19 B1 311 294 3.79      
20 B1 200 189 0.52      
21 B2 3247 3076 4.04      
22 B2 3222 3053 1.07      
23 B2 1659 1572 7.42      
24 B2 1487 1409 16.66      
25 B2 1301 1233 2.79      
26 B2 1170 1109 1.85      
27 B2 1045 990 34.54      
28 B2 759 720 12.98      
29 B2 432 409 0.45      
30 B2 339 322 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 16407.7 cm-1
Scaled (by 0.9475) Zero Point Vibrational Energy (zpe) 15546.3 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 CCSD=FULL/TZVP
ABC
0.06320 0.04763 0.02716

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.696 -0.028
C2 0.000 -0.696 -0.028
C3 0.000 1.388 1.181
C4 0.000 -1.388 1.181
C5 0.000 0.696 2.385
C6 0.000 -0.696 2.385
Cl7 0.000 1.612 -1.512
Cl8 0.000 -1.612 -1.512
H9 0.000 2.469 1.165
H10 0.000 -2.469 1.165
H11 0.000 1.244 3.317
H12 0.000 -1.244 3.317

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C11.39291.39242.40942.41222.78521.74472.74512.13603.38223.38903.8667
C21.39292.40941.39242.78522.41222.74511.74473.38222.13603.86673.3890
C31.39242.40942.77581.38832.40652.70294.03201.08073.85642.14063.3897
C42.40941.39242.77582.40651.38834.03202.70293.85641.08073.38972.1406
C52.41222.78521.38832.40651.39194.00344.52952.15163.39141.08152.1526
C62.78522.41222.40651.38831.39194.52954.00343.39142.15162.15261.0815
Cl71.74472.74512.70294.03204.00344.52953.22482.81114.88094.84335.6110
Cl82.74511.74474.03202.70294.52954.00343.22484.88092.81115.61104.8433
H92.13603.38221.08073.85642.15163.39142.81114.88094.93702.47574.2913
H103.38222.13603.85641.08073.39142.15164.88092.81114.93704.29132.4757
H113.38903.86672.14063.38971.08152.15264.84335.61102.47574.29132.4886
H123.86673.38903.38972.14062.15261.08155.61104.84334.29132.47572.4886

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 119.774 C1 C2 Cl8 121.667
C1 C3 C5 120.332 C1 C3 H9 118.926
C2 C1 C3 119.774 C2 C1 Cl7 121.667
C2 C4 C6 120.332 C2 C4 H10 118.926
C3 C1 Cl7 118.558 C3 C5 C6 119.894
C3 C5 H11 119.642 C4 C2 Cl8 118.558
C4 C6 C5 119.894 C4 C6 H12 119.642
C5 C3 H9 120.743 C5 C6 H12 120.464
C6 C4 H10 120.743 C6 C5 H11 120.464
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability