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

using model chemistry: QCISD/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-1149.614389
Energy at 298.15K 
HF Energy-1148.509196
Nuclear repulsion energy467.951147
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/6-31+G**
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 3279 3100 7.17      
2 A1 3264 3086 6.23      
3 A1 1657 1567 4.89      
4 A1 1533 1450 52.80      
5 A1 1292 1221 1.40      
6 A1 1202 1136 2.15      
7 A1 1183 1118 35.00      
8 A1 1076 1017 7.91      
9 A1 680 643 13.21      
10 A1 490 463 5.16      
11 A1 205 194 0.01      
12 A2 912 862 0.00      
13 A2 839 793 0.00      
14 A2 453 428 0.00      
15 A2 125 118 0.00      
16 A2 721i 682i 0.00      
17 B1 915 865 0.94      
18 B1 758 716 76.68      
19 B1 409 386 4.26      
20 B1 221 209 1.62      
21 B2 3274 3095 5.73      
22 B2 3252 3074 1.01      
23 B2 1672 1581 8.96      
24 B2 1495 1414 16.65      
25 B2 1306 1235 3.48      
26 B2 1176 1112 2.45      
27 B2 1062 1004 34.95      
28 B2 763 722 13.68      
29 B2 433 410 0.35      
30 B2 341 322 0.18      

Unscaled Zero Point Vibrational Energy (zpe) 17272.5 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 16329.4 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/6-31+G**
ABC
0.06310 0.04748 0.02709

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.700 -0.033
C2 0.000 -0.700 -0.033
C3 0.000 1.395 1.182
C4 0.000 -1.395 1.182
C5 0.000 0.699 2.391
C6 0.000 -0.699 2.391
Cl7 0.000 1.611 -1.514
Cl8 0.000 -1.611 -1.514
H9 0.000 2.476 1.166
H10 0.000 -2.476 1.166
H11 0.000 1.248 3.324
H12 0.000 -1.248 3.324

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C11.40051.39952.42172.42382.79881.73852.74482.14293.39533.40113.8811
C21.40052.42171.39952.79882.42382.74481.73853.39532.14293.88113.4011
C31.39952.42172.78931.39462.41782.70464.03741.08173.87092.14673.4015
C42.42171.39952.78932.41781.39464.03742.70463.87091.08173.40152.1467
C52.42382.79881.39462.41781.39854.00974.53692.15813.40341.08232.1592
C62.79882.42382.41781.39461.39854.53694.00973.40342.15812.15921.0823
Cl71.73852.74482.70464.03744.00974.53693.22162.81644.88744.85125.6192
Cl82.74481.73854.03742.70464.53694.00973.22164.88742.81645.61924.8512
H92.14293.39531.08173.87092.15813.40342.81644.88744.95242.48264.3040
H103.39532.14293.87091.08173.40342.15814.88742.81644.95244.30402.4826
H113.40113.88112.14673.40151.08232.15924.85125.61922.48264.30402.4960
H123.88113.40113.40152.14672.15921.08235.61924.85124.30402.48262.4960

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 119.750 C1 C2 Cl8 121.585
C1 C3 C5 120.339 C1 C3 H9 118.912
C2 C1 C3 119.750 C2 C1 Cl7 121.585
C2 C4 C6 120.339 C2 C4 H10 118.912
C3 C1 Cl7 118.665 C3 C5 C6 119.911
C3 C5 H11 119.624 C4 C2 Cl8 118.665
C4 C6 C5 119.911 C4 C6 H12 119.624
C5 C3 H9 120.749 C5 C6 H12 120.465
C6 C4 H10 120.749 C6 C5 H11 120.465
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability