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

using model chemistry: CCD/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 CCD/6-31G(2df,p)
 hartrees
Energy at 0K-1149.823417
Energy at 298.15K-1149.827683
HF Energy-1148.531474
Nuclear repulsion energy449.876481
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 CCD/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 3272 3099 0.00      
2 Ag 1664 1577 0.00      
3 Ag 1217 1152 0.00      
4 Ag 1149 1088 0.00      
5 Ag 772 731 0.00      
6 Ag 336 318 0.00      
7 Au 974 923 0.00      
8 Au 421 398 0.00      
9 B1g 859 814 0.00      
10 B1u 3256 3084 0.44      
11 B1u 1540 1459 97.73      
12 B1u 1143 1083 86.37      
13 B1u 1035 981 47.74      
14 B1u 569 539 22.56      
15 B2g 967 916 0.00      
16 B2g 696 659 0.00      
17 B2g 305 289 0.00      
18 B2u 3270 3097 0.17      
19 B2u 1445 1369 7.75      
20 B2u 1276 1209 0.09      
21 B2u 1139 1079 3.98      
22 B2u 224 213 1.19      
23 B3g 3257 3085 0.00      
24 B3g 1656 1569 0.00      
25 B3g 1333 1263 0.00      
26 B3g 641 607 0.00      
27 B3g 359 340 0.00      
28 B3u 857 811 46.92      
29 B3u 504 478 11.78      
30 B3u 105 99 0.71      

Unscaled Zero Point Vibrational Energy (zpe) 18120.0 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 17163.3 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 CCD/6-31G(2df,p)
ABC
0.18978 0.02234 0.01999

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.379
C2 0.000 0.000 -1.379
C3 0.000 1.210 0.695
C4 0.000 -1.210 0.695
C5 0.000 -1.210 -0.695
C6 0.000 1.210 -0.695
Cl7 0.000 0.000 3.117
Cl8 0.000 0.000 -3.117
H9 0.000 2.143 1.244
H10 0.000 -2.143 1.244
H11 0.000 -2.143 -1.244
H12 0.000 2.143 -1.244

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.75781.39001.39002.40172.40171.73814.49592.14692.14693.38703.3870
C22.75782.40172.40171.39001.39004.49591.73813.38703.38702.14692.1469
C31.39002.40172.42082.79191.39102.70724.00001.08183.39763.87372.1521
C41.39002.40172.42081.39102.79192.70724.00003.39761.08182.15213.8737
C52.40171.39002.79191.39102.42084.00002.70723.87372.15211.08183.3976
C62.40171.39001.39102.79192.42084.00002.70722.15213.87373.39761.0818
Cl71.73814.49592.70722.70724.00004.00006.23402.84572.84574.85924.8592
Cl84.49591.73814.00004.00002.70722.70726.23404.85924.85922.84572.8457
H92.14693.38701.08183.39763.87372.15212.84574.85924.28534.95542.4886
H102.14693.38703.39761.08182.15213.87372.84574.85924.28532.48864.9554
H113.38702.14693.87372.15211.08183.39764.85922.84574.95542.48864.2853
H123.38702.14692.15213.87373.39761.08184.85922.84572.48864.95544.2853

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 119.451 C1 C3 H9 120.065
C1 C4 C5 119.451 C1 C4 H10 120.065
C2 C5 C4 119.451 C2 C5 H11 120.065
C2 C6 C3 119.451 C2 C6 H12 120.065
C3 C1 C4 121.099 C3 C1 Cl7 119.451
C3 C6 H12 120.485 C4 C1 Cl7 119.451
C4 C5 H11 120.485 C5 C2 C6 121.099
C5 C2 Cl8 119.451 C5 C4 H10 120.485
C6 C2 Cl8 119.451 C6 C3 H9 120.485
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability