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

using model chemistry: MP2/CEP-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 MP2/CEP-31G
 hartrees
Energy at 0K-65.006182
Energy at 298.15K-65.010021
HF Energy-64.465440
Nuclear repulsion energy159.722754
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 MP2/CEP-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 3209 3101 23.76      
2 A1 3179 3072 10.21      
3 A1 1580 1526 3.79      
4 A1 1464 1415 40.80      
5 A1 1376 1329 0.22      
6 A1 1190 1150 0.07      
7 A1 1130 1092 20.54      
8 A1 1022 987 9.29      
9 A1 643 621 12.24      
10 A1 443 428 6.04      
11 A1 186 180 0.00      
12 A2 876 847 0.00      
13 A2 816 789 0.00      
14 A2 558 539 0.00      
15 A2 497 480 0.00      
16 A2 129 125 0.00      
17 B1 873 844 0.47      
18 B1 754 729 108.58      
19 B1 437 422 10.33      
20 B1 225 217 2.52      
21 B2 3198 3090 16.45      
22 B2 3157 3051 1.69      
23 B2 1580 1527 9.32      
24 B2 1434 1386 16.00      
25 B2 1276 1233 1.88      
26 B2 1133 1095 1.41      
27 B2 1014 980 42.47      
28 B2 719 695 16.54      
29 B2 401 387 0.19      
30 B2 317 306 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 17408.0 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 16821.3 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 MP2/CEP-31G
ABC
0.05821 0.04407 0.02508

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.720 -0.016
C2 0.000 -0.720 -0.016
C3 0.000 1.442 1.230
C4 0.000 -1.442 1.230
C5 0.000 0.721 2.476
C6 0.000 -0.721 2.476
Cl7 0.000 1.685 -1.575
Cl8 0.000 -1.685 -1.575
H9 0.000 2.540 1.213
H10 0.000 -2.540 1.213
H11 0.000 1.278 3.424
H12 0.000 -1.278 3.424

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C11.44021.44012.49562.49172.87831.83352.86602.19633.48443.48493.9783
C21.44022.49561.44012.87832.49172.86601.83353.48442.19633.97833.4849
C31.44012.49562.88441.43952.49612.81574.20071.09833.98272.20013.4949
C42.49561.44012.88442.49611.43954.20072.81573.98271.09833.49492.2001
C52.49172.87831.43952.49611.44184.16404.71132.21483.49721.09992.2126
C62.87832.49172.49611.43951.44184.71134.16403.49722.21482.21261.0999
Cl71.83352.86602.81574.20074.16404.71133.36922.91665.06215.01575.8112
Cl82.86601.83354.20072.81574.71134.16403.36925.06212.91665.81125.0157
H92.19633.48441.09833.98272.21483.49722.91665.06215.08092.54594.4126
H103.48442.19633.98271.09833.49722.21485.06212.91665.08094.41262.5459
H113.48493.97832.20013.49491.09992.21265.01575.81122.54594.41262.5565
H123.97833.48493.49492.20012.21261.09995.81125.01574.41262.54592.5565

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 120.095 C1 C2 Cl8 121.739
C1 C3 C5 119.832 C1 C3 H9 119.206
C2 C1 C3 120.095 C2 C1 Cl7 121.739
C2 C4 C6 119.832 C2 C4 H10 119.206
C3 C1 Cl7 118.166 C3 C5 C6 120.073
C3 C5 H11 119.481 C4 C2 Cl8 118.166
C4 C6 C5 120.073 C4 C6 H12 119.481
C5 C3 H9 120.962 C5 C6 H12 120.446
C6 C4 H10 120.962 C6 C5 H11 120.446
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability