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

using model chemistry: CCSD(T)/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 CCSD(T)/6-31G**
 hartrees
Energy at 0K-1149.647801
Energy at 298.15K-1149.651743
HF Energy-1148.507230
Nuclear repulsion energy447.217137
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 CCSD(T)/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 3267 3099        
2 Ag 1653 1568        
3 Ag 1213 1151        
4 Ag 1127 1069        
5 Ag 762 723        
6 Ag 330 313        
7 Au 904 857        
8 Au 398 377        
9 B1g 812 770        
10 B1u 3252 3084        
11 B1u 1535 1456        
12 B1u 1132 1074        
13 B1u 1022 969        
14 B1u 556 527        
15 B2g 871 826        
16 B2g 499 473        
17 B2g 289 275        
18 B2u 3266 3098        
19 B2u 1440 1366        
20 B2u 1314 1247        
21 B2u 1136 1077        
22 B2u 221 210        
23 B3g 3253 3085        
24 B3g 1635 1551        
25 B3g 1328 1260        
26 B3g 637 604        
27 B3g 353 335        
28 B3u 787 747        
29 B3u 467 443        
30 B3u 102 97        

Unscaled Zero Point Vibrational Energy (zpe) 17779.3 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 16863.7 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 CCSD(T)/6-31G**
ABC
0.18789 0.02205 0.01973

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G**

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 1.217 0.700
C4 0.000 -1.217 0.700
C5 0.000 -1.217 -0.700
C6 0.000 1.217 -0.700
Cl7 0.000 0.000 3.137
Cl8 0.000 0.000 -3.137
H9 0.000 2.151 1.247
H10 0.000 -2.151 1.247
H11 0.000 -2.151 -1.247
H12 0.000 2.151 -1.247

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.77971.39901.39902.41792.41791.74754.52722.15582.15583.40273.4027
C22.77972.41792.41791.39901.39904.52721.74753.40273.40272.15582.1558
C31.39902.41792.43362.80711.39912.72464.02531.08273.41203.88982.1589
C41.39902.41792.43361.39912.80712.72464.02533.41201.08272.15893.8898
C52.41791.39902.80711.39912.43364.02532.72463.88982.15891.08273.4120
C62.41791.39901.39912.80712.43364.02532.72462.15893.88983.41201.0827
Cl71.74754.52722.72462.72464.02534.02536.27482.86392.86394.88344.8834
Cl84.52721.74754.02534.02532.72462.72466.27484.88344.88342.86392.8639
H92.15583.40271.08273.41203.88982.15892.86394.88344.30214.97242.4934
H102.15583.40273.41201.08272.15893.88982.86394.88344.30212.49344.9724
H113.40272.15583.88982.15891.08273.41204.88342.86394.97242.49344.3021
H123.40272.15582.15893.88983.41201.08274.88342.86392.49344.97244.3021

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 119.566 C1 C3 H9 120.079
C1 C4 C5 119.566 C1 C4 H10 120.079
C2 C5 C4 119.566 C2 C5 H11 120.079
C2 C6 C3 119.566 C2 C6 H12 120.079
C3 C1 C4 120.868 C3 C1 Cl7 119.566
C3 C6 H12 120.354 C4 C1 Cl7 119.566
C4 C5 H11 120.354 C5 C2 C6 120.868
C5 C2 Cl8 119.566 C5 C4 H10 120.354
C6 C2 Cl8 119.566 C6 C3 H9 120.354
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability