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

using model chemistry: CCSD(T)/6-311G*

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)/6-311G*
 hartrees
Energy at 0K-1149.755939
Energy at 298.15K-1149.759716
HF Energy-1148.586277
Nuclear repulsion energy446.794687
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)/6-311G*
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 3198 3078        
2 Ag 1627 1566        
3 Ag 1196 1152        
4 Ag 1117 1075        
5 Ag 756 727        
6 Ag 329 317        
7 Au 862 830        
8 Au 395 381        
9 B1g 784 755        
10 B1u 3182 3063        
11 B1u 1511 1455        
12 B1u 1117 1076        
13 B1u 1012 974        
14 B1u 554 534        
15 B2g 832 801        
16 B2g 413 397        
17 B2g 281 270        
18 B2u 3196 3077        
19 B2u 1420 1367        
20 B2u 1288 1240        
21 B2u 1120 1078        
22 B2u 218 210        
23 B3g 3183 3064        
24 B3g 1611 1551        
25 B3g 1309 1260        
26 B3g 632 608        
27 B3g 348 335        
28 B3u 756 728        
29 B3u 447 430        
30 B3u 102 98        

Unscaled Zero Point Vibrational Energy (zpe) 17397.7 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 16747.1 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)/6-311G*
ABC
0.18711 0.02203 0.01971

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.392
C2 0.000 0.000 -1.392
C3 0.000 1.219 0.701
C4 0.000 -1.219 0.701
C5 0.000 -1.219 -0.701
C6 0.000 1.219 -0.701
Cl7 0.000 0.000 3.138
Cl8 0.000 0.000 -3.138
H9 0.000 2.158 1.252
H10 0.000 -2.158 1.252
H11 0.000 -2.158 -1.252
H12 0.000 2.158 -1.252

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.78411.40121.40122.42222.42221.74594.52992.16242.16243.41313.4131
C22.78412.42222.42221.40121.40124.52991.74593.41313.41312.16242.1624
C31.40122.42222.43802.81241.40212.72474.02781.08883.42163.90112.1673
C41.40122.42222.43801.40212.81242.72474.02783.42161.08882.16733.9011
C52.42221.40122.81241.40212.43804.02782.72473.90112.16731.08883.4216
C62.42221.40121.40212.81242.43804.02782.72472.16733.90113.42161.0888
Cl71.74594.52992.72472.72474.02784.02786.27582.86572.86574.89194.8919
Cl84.52991.74594.02784.02782.72472.72476.27584.89194.89192.86572.8657
H92.16243.41311.08883.42163.90112.16732.86574.89194.31584.98992.5046
H102.16243.41313.42161.08882.16733.90112.86574.89194.31582.50464.9899
H113.41312.16243.90112.16731.08883.42164.89192.86574.98992.50464.3158
H123.41312.16242.16733.90113.42161.08884.89192.86572.50464.98994.3158

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 119.548 C1 C3 H9 120.033
C1 C4 C5 119.548 C1 C4 H10 120.033
C2 C5 C4 119.548 C2 C5 H11 120.033
C2 C6 C3 119.548 C2 C6 H12 120.033
C3 C1 C4 120.904 C3 C1 Cl7 119.548
C3 C6 H12 120.419 C4 C1 Cl7 119.548
C4 C5 H11 120.419 C5 C2 C6 120.904
C5 C2 Cl8 119.548 C5 C4 H10 120.419
C6 C2 Cl8 119.548 C6 C3 H9 120.419
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability