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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-1149.662687
Energy at 298.15K-1149.666481
HF Energy-1148.587482
Nuclear repulsion energy448.610062
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 3240 3079 0.00      
2 Ag 1633 1551 0.00      
3 Ag 1210 1149 0.00      
4 Ag 1134 1077 0.00      
5 Ag 766 728 0.00      
6 Ag 334 317 0.00      
7 Au 865 822 0.00      
8 Au 401 381 0.00      
9 B1g 789 750 0.00      
10 B1u 3225 3065 1.02      
11 B1u 1517 1442 110.15      
12 B1u 1132 1076 96.69      
13 B1u 1022 971 57.22      
14 B1u 567 539 23.06      
15 B2g 844 802 0.00      
16 B2g 367 349 0.00      
17 B2g 285 271 0.00      
18 B2u 3239 3078 1.97      
19 B2u 1464 1391 1.86      
20 B2u 1406 1336 5.54      
21 B2u 1132 1076 4.64      
22 B2u 221 210 0.47      
23 B3g 3227 3067 0.00      
24 B3g 1621 1540 0.00      
25 B3g 1320 1254 0.00      
26 B3g 635 603 0.00      
27 B3g 354 336 0.00      
28 B3u 759 721 71.20      
29 B3u 449 427 20.00      
30 B3u 100 95 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 17627.7 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 16751.6 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
0.18841 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 1.388
C2 0.000 0.000 -1.388
C3 0.000 1.215 0.698
C4 0.000 -1.215 0.698
C5 0.000 -1.215 -0.698
C6 0.000 1.215 -0.698
Cl7 0.000 0.000 3.124
Cl8 0.000 0.000 -3.124
H9 0.000 2.151 1.248
H10 0.000 -2.151 1.248
H11 0.000 -2.151 -1.248
H12 0.000 2.151 -1.248

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.77691.39711.39712.41452.41451.73564.51252.15572.15573.40253.4025
C22.77692.41452.41451.39711.39714.51251.73563.40253.40252.15572.1557
C31.39712.41452.42932.80221.39662.71294.01071.08573.41033.88792.1596
C41.39712.41452.42931.39662.80222.71294.01073.41031.08572.15963.8879
C52.41451.39712.80221.39662.42934.01072.71293.88792.15961.08573.4103
C62.41451.39711.39662.80222.42934.01072.71292.15963.88793.41031.0857
Cl71.73564.51252.71292.71294.01074.01076.24812.85452.85454.87234.8723
Cl84.51251.73564.01074.01072.71292.71296.24814.87234.87232.85452.8545
H92.15573.40251.08573.41033.88792.15962.85454.87234.30234.97362.4954
H102.15573.40253.41031.08572.15963.88792.85454.87234.30232.49544.9736
H113.40252.15573.88792.15961.08573.41034.87232.85454.97362.49544.3023
H123.40252.15572.15963.88793.41031.08574.87232.85452.49544.97364.3023

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 119.605 C1 C3 H9 119.995
C1 C4 C5 119.605 C1 C4 H10 119.995
C2 C5 C4 119.605 C2 C5 H11 119.995
C2 C6 C3 119.605 C2 C6 H12 119.995
C3 C1 C4 120.790 C3 C1 Cl7 119.605
C3 C6 H12 120.400 C4 C1 Cl7 119.605
C4 C5 H11 120.400 C5 C2 C6 120.790
C5 C2 Cl8 119.605 C5 C4 H10 120.400
C6 C2 Cl8 119.605 C6 C3 H9 120.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability