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All results from a given calculation for C6H4Cl2 (1,4-dichlorobenzene)

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-1149.691491
Energy at 298.15K-1149.695276
HF Energy-1148.594988
Nuclear repulsion energy448.669586
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 MP2/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3243 3082 0.00      
2 Ag 1628 1547 0.00      
3 Ag 1200 1140 0.00      
4 Ag 1134 1078 0.00      
5 Ag 765 727 0.00      
6 Ag 333 317 0.00      
7 Au 899 854 0.00      
8 Au 399 379 0.00      
9 B1g 801 761 0.00      
10 B1u 3228 3067 0.83      
11 B1u 1509 1434 103.11      
12 B1u 1131 1074 102.29      
13 B1u 1017 967 53.08      
14 B1u 567 539 21.96      
15 B2g 866 822 0.00      
16 B2g 328 312 0.00      
17 B2g 283 269 0.00      
18 B2u 3242 3080 1.37      
19 B2u 1459 1387 0.79      
20 B2u 1402 1332 5.32      
21 B2u 1123 1068 4.19      
22 B2u 220 209 0.42      
23 B3g 3229 3068 0.00      
24 B3g 1618 1537 0.00      
25 B3g 1310 1245 0.00      
26 B3g 633 601 0.00      
27 B3g 353 335 0.00      
28 B3u 766 728 59.85      
29 B3u 446 424 18.54      
30 B3u 99 94 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 17615.4 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 16738.1 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 MP2/6-311G**
ABC
0.18859 0.02222 0.01988

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.390
C2 0.000 0.000 -1.390
C3 0.000 1.214 0.698
C4 0.000 -1.214 0.698
C5 0.000 -1.214 -0.698
C6 0.000 1.214 -0.698
Cl7 0.000 0.000 3.124
Cl8 0.000 0.000 -3.124
H9 0.000 2.150 1.247
H10 0.000 -2.150 1.247
H11 0.000 -2.150 -1.247
H12 0.000 2.150 -1.247

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.77901.39711.39712.41512.41511.73464.51362.15472.15473.40223.4022
C22.77902.41512.41511.39711.39714.51361.73463.40223.40222.15472.1547
C31.39712.41512.42812.80111.39642.71274.01051.08513.40863.88612.1588
C41.39712.41512.42811.39642.80112.71274.01053.40861.08512.15883.8861
C52.41511.39712.80111.39642.42814.01052.71273.88612.15881.08513.4086
C62.41511.39711.39642.80112.42814.01052.71272.15883.88613.40861.0851
Cl71.73464.51362.71272.71274.01054.01056.24822.85402.85404.87144.8714
Cl84.51361.73464.01054.01052.71272.71276.24824.87144.87142.85402.8540
H92.15473.40221.08513.40863.88612.15882.85404.87144.30014.97112.4944
H102.15473.40223.40861.08512.15883.88612.85404.87144.30012.49444.9711
H113.40222.15473.88612.15881.08513.40864.87142.85404.97112.49444.3001
H123.40222.15472.15883.88613.40861.08514.87142.85402.49444.97114.3001

picture of 1,4-dichlorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C6 119.657 C1 C3 H9 119.950
C1 C4 C5 119.657 C1 C4 H10 119.950
C2 C5 C4 119.657 C2 C5 H11 119.950
C2 C6 C3 119.657 C2 C6 H12 119.950
C3 C1 C4 120.685 C3 C1 Cl7 119.657
C3 C6 H12 120.392 C4 C1 Cl7 119.657
C4 C5 H11 120.392 C5 C2 C6 120.685
C5 C2 Cl8 119.657 C5 C4 H10 120.392
C6 C2 Cl8 119.657 C6 C3 H9 120.392
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability