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

using model chemistry: MP3=FULL/3-21G*

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/3-21G*
 hartrees
Energy at 0K-1143.915809
Energy at 298.15K-1143.920014
HF Energy-1143.058075
Nuclear repulsion energy445.909807
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/3-21G*
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 3236 3236 0.00      
2 Ag 1622 1622 0.00      
3 Ag 1252 1252 0.00      
4 Ag 1113 1113 0.00      
5 Ag 772 772 0.00      
6 Ag 335 335 0.00      
7 Au 950 950 0.00      
8 Au 425 425 0.00      
9 B1g 842 842 0.00      
10 B1u 3219 3219 0.52      
11 B1u 1547 1547 80.50      
12 B1u 1135 1135 108.38      
13 B1u 1066 1066 22.39      
14 B1u 544 544 28.19      
15 B2g 917 917 0.00      
16 B2g 678 678 0.00      
17 B2g 305 305 0.00      
18 B2u 3233 3233 0.91      
19 B2u 1446 1446 9.57      
20 B2u 1181 1181 1.81      
21 B2u 1149 1149 1.49      
22 B2u 223 223 1.23      
23 B3g 3219 3219 0.00      
24 B3g 1602 1602 0.00      
25 B3g 1377 1377 0.00      
26 B3g 673 673 0.00      
27 B3g 363 363 0.00      
28 B3u 832 832 74.36      
29 B3u 495 495 21.67      
30 B3u 105 105 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 17927.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17927.2 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/3-21G*
ABC
0.18762 0.02189 0.01960

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/3-21G*

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 1.218 0.701
C4 0.000 -1.218 0.701
C5 0.000 -1.218 -0.701
C6 0.000 1.218 -0.701
Cl7 0.000 0.000 3.150
Cl8 0.000 0.000 -3.150
H9 0.000 2.153 1.251
H10 0.000 -2.153 1.251
H11 0.000 -2.153 -1.251
H12 0.000 2.153 -1.251

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.77961.39891.39892.41952.41951.76024.53982.15752.15753.40713.4071
C22.77962.41952.41951.39891.39894.53981.76023.40713.40712.15752.1575
C31.39892.41952.43522.81001.40202.73504.03891.08513.41513.89502.1645
C41.39892.41952.43521.40202.81002.73504.03893.41511.08512.16453.8950
C52.41951.39892.81001.40202.43524.03892.73503.89502.16451.08513.4151
C62.41951.39891.40202.81002.43524.03892.73502.16453.89503.41511.0851
Cl71.76024.53982.73502.73504.03894.03896.30002.87092.87094.89934.8993
Cl84.53981.76024.03894.03892.73502.73506.30004.89934.89932.87092.8709
H92.15753.40711.08513.41513.89502.16452.87094.89934.30604.98002.5018
H102.15753.40713.41511.08512.16453.89502.87094.89934.30602.50184.9800
H113.40712.15753.89502.16451.08513.41514.89932.87094.98002.50184.3060
H123.40712.15752.16453.89503.41511.08514.89932.87092.50184.98004.3060

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 119.496 C1 C3 H9 120.055
C1 C4 C5 119.496 C1 C4 H10 120.055
C2 C5 C4 119.496 C2 C5 H11 120.055
C2 C6 C3 119.496 C2 C6 H12 120.055
C3 C1 C4 121.008 C3 C1 Cl7 119.496
C3 C6 H12 120.449 C4 C1 Cl7 119.496
C4 C5 H11 120.449 C5 C2 C6 121.008
C5 C2 Cl8 119.496 C5 C4 H10 120.449
C6 C2 Cl8 119.496 C6 C3 H9 120.449
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability