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

using model chemistry: CCSD(T)/TZVP

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)/TZVP
 hartrees
Energy at 0K-1149.802197
Energy at 298.15K 
HF Energy-1148.612514
Nuclear repulsion energy447.121404
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)/TZVP
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 3230 3108        
2 Ag 1622 1561        
3 Ag 1200 1155        
4 Ag 1110 1068        
5 Ag 754 726        
6 Ag 327 315        
7 Au 662 637        
8 Au 94i 90i        
9 B1g 722 695        
10 B1u 3213 3093        
11 B1u 1514 1457        
12 B1u 1112 1071        
13 B1u 1006 968        
14 B1u 546 526        
15 B2g 749 721        
16 B2g 224 216        
17 B2g 1460i 1405i        
18 B2u 3228 3107        
19 B2u 1419 1366        
20 B2u 1284 1236        
21 B2u 1123 1080        
22 B2u 217 209        
23 B3g 3214 3094        
24 B3g 1612 1551        
25 B3g 1317 1268        
26 B3g 632 609        
27 B3g 346 333        
28 B3u 663 638        
29 B3u 240 231        
30 B3u 153 147        

Unscaled Zero Point Vibrational Energy (zpe) 15941.6 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 15343.8 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)/TZVP
ABC
0.18862 0.02201 0.01971

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/TZVP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.385
C2 0.000 0.000 -1.385
C3 0.000 1.214 0.698
C4 0.000 -1.214 0.698
C5 0.000 -1.214 -0.698
C6 0.000 1.214 -0.698
Cl7 0.000 0.000 3.142
Cl8 0.000 0.000 -3.142
H9 0.000 2.149 1.246
H10 0.000 -2.149 1.246
H11 0.000 -2.149 -1.246
H12 0.000 2.149 -1.246

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.77031.39491.39492.41152.41151.75644.52682.15332.15333.39743.3974
C22.77032.41152.41151.39491.39494.52681.75643.39743.39742.15332.1533
C31.39492.41152.42832.80131.39682.72824.02741.08353.40733.88482.1577
C41.39492.41152.42831.39682.80132.72824.02743.40731.08352.15773.8848
C52.41151.39492.80131.39682.42834.02742.72823.88482.15771.08353.4073
C62.41151.39491.39682.80132.42834.02742.72822.15773.88483.40731.0835
Cl71.75644.52682.72822.72824.02744.02746.28322.86522.86524.88584.8858
Cl84.52681.75644.02744.02742.72822.72826.28324.88584.88582.86522.8652
H92.15333.39741.08353.40733.88482.15772.86524.88584.29764.96822.4927
H102.15333.39743.40731.08352.15773.88482.86524.88584.29762.49274.9682
H113.39742.15333.88482.15771.08353.40734.88582.86524.96822.49274.2976
H123.39742.15332.15773.88483.40731.08354.88582.86522.49274.96824.2976

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 119.494 C1 C3 H9 120.127
C1 C4 C5 119.494 C1 C4 H10 120.127
C2 C5 C4 119.494 C2 C5 H11 120.127
C2 C6 C3 119.494 C2 C6 H12 120.127
C3 C1 C4 121.012 C3 C1 Cl7 119.494
C3 C6 H12 120.379 C4 C1 Cl7 119.494
C4 C5 H11 120.379 C5 C2 C6 121.012
C5 C2 Cl8 119.494 C5 C4 H10 120.379
C6 C2 Cl8 119.494 C6 C3 H9 120.379
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability