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

using model chemistry: MP3=FULL/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at MP3=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-1149.917974
Energy at 298.15K-1149.922312
HF Energy-1148.531891
Nuclear repulsion energy451.383386
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 MP3=FULL/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 Ag 3303 3303 0.00      
2 Ag 1674 1674 0.00      
3 Ag 1223 1223 0.00      
4 Ag 1156 1156 0.00      
5 Ag 776 776 0.00      
6 Ag 339 339 0.00      
7 Au 982 982 0.00      
8 Au 432 432 0.00      
9 B1g 867 867 0.00      
10 B1u 3287 3287 0.37      
11 B1u 1547 1547 104.87      
12 B1u 1150 1150 88.43      
13 B1u 1039 1039 47.31      
14 B1u 575 575 23.67      
15 B2g 981 981 0.00      
16 B2g 733 733 0.00      
17 B2g 310 310 0.00      
18 B2u 3302 3302 0.02      
19 B2u 1452 1452 8.01      
20 B2u 1273 1273 0.09      
21 B2u 1144 1144 4.27      
22 B2u 227 227 1.14      
23 B3g 3288 3288 0.00      
24 B3g 1662 1662 0.00      
25 B3g 1338 1338 0.00      
26 B3g 645 645 0.00      
27 B3g 363 363 0.00      
28 B3u 865 865 47.17      
29 B3u 511 511 12.27      
30 B3u 107 107 0.69      

Unscaled Zero Point Vibrational Energy (zpe) 18274.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18274.6 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 MP3=FULL/6-31G(2df,p)
ABC
0.19093 0.02250 0.02012

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G(2df,p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.376
C2 0.000 0.000 -1.376
C3 0.000 1.207 0.694
C4 0.000 -1.207 0.694
C5 0.000 -1.207 -0.694
C6 0.000 1.207 -0.694
Cl7 0.000 0.000 3.106
Cl8 0.000 0.000 -3.106
H9 0.000 2.136 1.241
H10 0.000 -2.136 1.241
H11 0.000 -2.136 -1.241
H12 0.000 2.136 -1.241

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.75221.38631.38632.39582.39581.72974.48192.14042.14043.37823.3782
C22.75222.39582.39581.38631.38634.48191.72973.37823.37822.14042.1404
C31.38632.39582.41352.78381.38732.69723.98651.07863.38743.86232.1463
C41.38632.39582.41351.38732.78382.69723.98653.38741.07862.14633.8623
C52.39581.38632.78381.38732.41353.98652.69723.86232.14631.07863.3874
C62.39581.38631.38732.78382.41353.98652.69722.14633.86233.38741.0786
Cl71.72974.48192.69722.69723.98653.98656.21172.83562.83564.84334.8433
Cl84.48191.72973.98653.98652.69722.69726.21174.84334.84332.83562.8356
H92.14043.37821.07863.38743.86232.14632.83564.84334.27234.94092.4819
H102.14043.37823.38741.07862.14633.86232.83564.84334.27232.48194.9409
H113.37822.14043.86232.14631.07863.38744.84332.83564.94092.48194.2723
H123.37822.14042.14633.86233.38741.07864.84332.83562.48194.94094.2723

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 119.489 C1 C3 H9 120.017
C1 C4 C5 119.489 C1 C4 H10 120.017
C2 C5 C4 119.489 C2 C5 H11 120.017
C2 C6 C3 119.489 C2 C6 H12 120.017
C3 C1 C4 121.021 C3 C1 Cl7 119.489
C3 C6 H12 120.494 C4 C1 Cl7 119.489
C4 C5 H11 120.494 C5 C2 C6 121.021
C5 C2 Cl8 119.489 C5 C4 H10 120.494
C6 C2 Cl8 119.489 C6 C3 H9 120.494
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability