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

using model chemistry: CISD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at CISD/6-31G
 hartrees
Energy at 0K-1148.904467
Energy at 298.15K-1148.908784
HF Energy-1148.375426
Nuclear repulsion energy441.996776
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 CISD/6-31G
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 3313 3107 0.00      
2 Ag 1704 1598 0.00      
3 Ag 1276 1197 0.00      
4 Ag 1151 1079 0.00      
5 Ag 775 727 0.00      
6 Ag 331 311 0.00      
7 Au 1008 945 0.00      
8 Au 440 413 0.00      
9 B1g 891 836 0.00      
10 B1u 3293 3088 0.35      
11 B1u 1594 1495 90.55      
12 B1u 1161 1089 78.79      
13 B1u 1078 1011 91.93      
14 B1u 533 500 30.92      
15 B2g 966 906 0.00      
16 B2g 699 655 0.00      
17 B2g 309 290 0.00      
18 B2u 3309 3104 2.75      
19 B2u 1487 1395 8.51      
20 B2u 1304 1222 2.69      
21 B2u 1186 1112 2.43      
22 B2u 217 204 2.09      
23 B3g 3294 3089 0.00      
24 B3g 1705 1599 0.00      
25 B3g 1404 1317 0.00      
26 B3g 676 634 0.00      
27 B3g 359 336 0.00      
28 B3u 883 828 74.75      
29 B3u 525 492 24.16      
30 B3u 104 98 1.25      

Unscaled Zero Point Vibrational Energy (zpe) 18487.7 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 17337.7 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 CISD/6-31G
ABC
0.18852 0.02131 0.01914

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.380
C2 0.000 0.000 -1.380
C3 0.000 1.215 0.700
C4 0.000 -1.215 0.700
C5 0.000 -1.215 -0.700
C6 0.000 1.215 -0.700
Cl7 0.000 0.000 3.199
Cl8 0.000 0.000 -3.199
H9 0.000 2.148 1.246
H10 0.000 -2.148 1.246
H11 0.000 -2.148 -1.246
H12 0.000 2.148 -1.246

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.75931.39201.39202.40822.40821.81954.57882.15182.15183.39253.3925
C22.75932.40822.40821.39201.39204.57881.81953.39253.39252.15182.1518
C31.39202.40822.42942.80371.39962.77894.08381.08143.40653.88512.1583
C41.39202.40822.42941.39962.80372.77894.08383.40651.08142.15833.8851
C52.40821.39202.80371.39962.42944.08382.77893.88512.15831.08143.4065
C62.40821.39201.39962.80372.42944.08382.77892.15833.88513.40651.0814
Cl71.81954.57882.77892.77894.08384.08386.39832.90272.90274.93724.9372
Cl84.57881.81954.08384.08382.77892.77896.39834.93724.93722.90272.9027
H92.15183.39251.08143.40653.88512.15832.90274.93724.29544.96642.4930
H102.15183.39253.40651.08142.15833.88512.90274.93724.29542.49304.9664
H113.39252.15183.88512.15831.08143.40654.93722.90274.96642.49304.2954
H123.39252.15182.15833.88513.40651.08144.93722.90272.49304.96644.2954

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 119.235 C1 C3 H9 120.396
C1 C4 C5 119.235 C1 C4 H10 120.396
C2 C5 C4 119.235 C2 C5 H11 120.396
C2 C6 C3 119.235 C2 C6 H12 120.396
C3 C1 C4 121.530 C3 C1 Cl7 119.235
C3 C6 H12 120.369 C4 C1 Cl7 119.235
C4 C5 H11 120.369 C5 C2 C6 121.530
C5 C2 Cl8 119.235 C5 C4 H10 120.369
C6 C2 Cl8 119.235 C6 C3 H9 120.369
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability