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

using model chemistry: MP2/6-31G(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 MP2/6-31G(2df,p)
 hartrees
Energy at 0K-1149.782343
Energy at 298.15K-1149.786553
HF Energy-1148.526090
Nuclear repulsion energy470.389110
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 MP2/6-31G(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 3265 3084 2.39      
2 A1 3251 3070 1.71      
3 A1 1614 1524 3.31      
4 A1 1492 1409 56.57      
5 A1 1456 1375 7.69      
6 A1 1189 1123 5.13      
7 A1 1174 1109 34.23      
8 A1 1061 1003 5.27      
9 A1 668 631 13.86      
10 A1 488 461 4.27      
11 A1 202 191 0.00      
12 A2 959 906 0.00      
13 A2 870 822 0.00      
14 A2 676 639 0.00      
15 A2 516 487 0.00      
16 A2 138 131 0.00      
17 B1 934 882 1.30      
18 B1 772 729 52.81      
19 B1 443 419 3.13      
20 B1 236 222 0.57      
21 B2 3259 3078 0.14      
22 B2 3240 3060 0.72      
23 B2 1619 1529 5.59      
24 B2 1457 1377 18.96      
25 B2 1275 1204 3.22      
26 B2 1158 1094 2.25      
27 B2 1041 983 34.28      
28 B2 758 716 13.69      
29 B2 434 410 0.29      
30 B2 339 320 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 17991.8 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 16993.3 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 MP2/6-31G(2df,p)
ABC
0.06426 0.04781 0.02741

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.700 -0.032
C2 0.000 -0.700 -0.032
C3 0.000 1.394 1.178
C4 0.000 -1.394 1.178
C5 0.000 0.697 2.382
C6 0.000 -0.697 2.382
Cl7 0.000 1.590 -1.508
Cl8 0.000 -1.590 -1.508
H9 0.000 2.477 1.158
H10 0.000 -2.477 1.158
H11 0.000 1.246 3.316
H12 0.000 -1.246 3.316

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C11.39921.39522.41802.41452.78941.72402.72432.13853.39173.39293.8726
C21.39922.41801.39522.78942.41452.72431.72403.39172.13853.87263.3929
C31.39522.41802.78751.39132.41292.69374.01501.08293.87032.14363.3969
C42.41801.39522.78752.41291.39134.01502.69373.87031.08293.39692.1436
C52.41452.78941.39132.41291.39423.99204.51322.16023.40171.08332.1556
C62.78942.41452.41291.39131.39424.51323.99203.40172.16022.15561.0833
Cl71.72402.72432.69374.01503.99204.51323.17992.80964.86254.83725.5965
Cl82.72431.72404.01502.69374.51323.99203.17994.86252.80965.59654.8372
H92.13853.39171.08293.87032.16023.40172.80964.86254.95302.48514.3029
H103.39172.13853.87031.08293.40172.16024.86252.80964.95304.30292.4851
H113.39293.87262.14363.39691.08332.15564.83725.59652.48514.30292.4913
H123.87263.39293.39692.14362.15561.08335.59654.83724.30292.48512.4913

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 119.837 C1 C2 Cl8 121.095
C1 C3 C5 120.114 C1 C3 H9 118.758
C2 C1 C3 119.837 C2 C1 Cl7 121.095
C2 C4 C6 120.114 C2 C4 H10 118.758
C3 C1 Cl7 119.068 C3 C5 C6 120.049
C3 C5 H11 119.528 C4 C2 Cl8 119.068
C4 C6 C5 120.049 C4 C6 H12 119.528
C5 C3 H9 121.129 C5 C6 H12 120.423
C6 C4 H10 121.129 C6 C5 H11 120.423
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability