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All results from a given calculation for C6H4Cl2 (1,2-dichlorobenzene)

using model chemistry: QCISD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-1149.828957
Energy at 298.15K-1149.833230
HF Energy-1148.526343
Nuclear repulsion energy469.667228
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 QCISD/6-31G(2df,p)
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 3259 3088 3.45      
2 A1 3243 3073 4.07      
3 A1 1644 1558 3.68      
4 A1 1518 1438 59.88      
5 A1 1267 1200 0.84      
6 A1 1193 1130 11.72      
7 A1 1180 1118 23.54      
8 A1 1071 1014 4.81      
9 A1 675 640 13.63      
10 A1 489 464 4.69      
11 A1 204 193 0.00      
12 A2 986 934 0.00      
13 A2 891 844 0.00      
14 A2 698 662 0.00      
15 A2 523 496 0.00      
16 A2 140 133 0.00      
17 B1 963 912 1.48      
18 B1 785 744 51.93      
19 B1 451 428 3.15      
20 B1 239 226 0.50      
21 B2 3254 3083 1.44      
22 B2 3230 3060 0.87      
23 B2 1654 1567 5.42      
24 B2 1480 1402 18.72      
25 B2 1293 1225 3.15      
26 B2 1168 1106 2.61      
27 B2 1052 997 32.22      
28 B2 760 720 14.11      
29 B2 436 413 0.47      
30 B2 341 323 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 18043.4 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 17094.3 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 QCISD/6-31G(2df,p)
ABC
0.06380 0.04775 0.02731

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.698 -0.030
C2 0.000 -0.698 -0.030
C3 0.000 1.392 1.179
C4 0.000 -1.392 1.179
C5 0.000 0.697 2.383
C6 0.000 -0.697 2.383
Cl7 0.000 1.599 -1.510
Cl8 0.000 -1.599 -1.510
H9 0.000 2.474 1.160
H10 0.000 -2.474 1.160
H11 0.000 1.245 3.317
H12 0.000 -1.245 3.317

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C11.39591.39442.41462.41342.78751.73242.73242.13843.38823.39193.8706
C21.39592.41461.39442.78752.41342.73241.73243.38822.13843.87063.3919
C31.39442.41462.78401.39032.41102.69674.02221.08243.86632.14313.3950
C42.41461.39442.78402.41101.39034.02222.69673.86631.08243.39502.1431
C52.41342.78751.39032.41101.39363.99604.51962.15753.39871.08312.1550
C62.78752.41342.41101.39031.39364.51963.99603.39872.15752.15501.0831
Cl71.73242.73242.69674.02223.99604.51963.19882.80964.87064.83985.6027
Cl82.73241.73244.02222.69674.51963.99603.19884.87062.80965.60274.8398
H92.13843.38821.08243.86632.15753.39872.80964.87064.94852.48254.2996
H103.38822.13843.86631.08243.39872.15754.87062.80964.94854.29962.4825
H113.39193.87062.14313.39501.08312.15504.83985.60272.48254.29962.4905
H123.87063.39193.39502.14312.15501.08315.60274.83984.29962.48252.4905

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 119.851 C1 C2 Cl8 121.357
C1 C3 C5 120.148 C1 C3 H9 118.853
C2 C1 C3 119.851 C2 C1 Cl7 121.357
C2 C4 C6 120.148 C2 C4 H10 118.853
C3 C1 Cl7 118.792 C3 C5 C6 120.001
C3 C5 H11 119.579 C4 C2 Cl8 118.792
C4 C6 C5 120.001 C4 C6 H12 119.579
C5 C3 H9 120.998 C5 C6 H12 120.421
C6 C4 H10 120.998 C6 C5 H11 120.421
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability