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

using model chemistry: QCISD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-31G
 hartrees
Energy at 0K-1149.028514
Energy at 298.15K-1149.032551
HF Energy-1148.364896
Nuclear repulsion energy457.070862
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
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 3191 3075 8.51      
2 A1 3170 3055 9.83      
3 A1 1620 1561 2.43      
4 A1 1512 1457 39.46      
5 A1 1270 1224 0.20      
6 A1 1211 1167 0.01      
7 A1 1152 1110 19.98      
8 A1 1054 1015 5.96      
9 A1 670 645 12.71      
10 A1 451 435 7.76      
11 A1 193 186 0.00      
12 A2 894 861 0.00      
13 A2 851 820 0.00      
14 A2 647 624 0.00      
15 A2 506 487 0.00      
16 A2 134 129 0.00      
17 B1 909 876 3.41      
18 B1 759 731 72.32      
19 B1 446 430 5.94      
20 B1 230 222 0.76      
21 B2 3185 3069 5.97      
22 B2 3155 3040 2.17      
23 B2 1623 1564 5.85      
24 B2 1479 1425 14.48      
25 B2 1308 1261 2.42      
26 B2 1160 1118 1.92      
27 B2 1050 1012 36.97      
28 B2 736 709 17.32      
29 B2 411 397 0.87      
30 B2 327 315 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 17652.4 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 17009.9 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
ABC
0.06000 0.04515 0.02576

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.702 -0.001
C2 0.000 -0.702 -0.001
C3 0.000 1.409 1.217
C4 0.000 -1.409 1.217
C5 0.000 0.706 2.439
C6 0.000 -0.706 2.439
Cl7 0.000 1.664 -1.559
Cl8 0.000 -1.664 -1.559
H9 0.000 2.500 1.198
H10 0.000 -2.500 1.198
H11 0.000 1.261 3.381
H12 0.000 -1.261 3.381

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C11.40321.40842.43682.44022.81721.83182.83302.16153.41893.42773.9098
C21.40322.43681.40842.81722.44022.83301.83183.41892.16153.90983.4277
C31.40842.43682.81821.41012.44322.78794.14161.09143.90952.16923.4366
C42.43681.40842.81822.44321.41014.14162.78793.90951.09143.43662.1692
C52.44022.81721.41012.44321.41254.11194.64862.18183.43861.09262.1806
C62.81722.44022.44321.41011.41254.64864.11193.43862.18182.18061.0926
Cl71.83182.83302.78794.14164.11194.64863.32852.88104.99454.95685.7412
Cl82.83301.83184.14162.78794.64864.11193.32854.99452.88105.74124.9568
H92.16153.41891.09143.90952.18183.43862.88104.99455.00072.51084.3486
H103.41892.16153.90951.09143.43862.18184.99452.88105.00074.34862.5108
H113.42773.90982.16923.43661.09262.18064.95685.74122.51084.34862.5210
H123.90983.42773.43662.16922.18061.09265.74124.95684.34862.51082.5210

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 120.157 C1 C2 Cl8 121.704
C1 C3 C5 119.947 C1 C3 H9 119.151
C2 C1 C3 120.157 C2 C1 Cl7 121.704
C2 C4 C6 119.947 C2 C4 H10 119.151
C3 C1 Cl7 118.140 C3 C5 C6 119.896
C3 C5 H11 119.623 C4 C2 Cl8 118.140
C4 C6 C5 119.896 C4 C6 H12 119.623
C5 C3 H9 120.902 C5 C6 H12 120.481
C6 C4 H10 120.902 C6 C5 H11 120.481
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability