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

using model chemistry: CCSD(T)=FULL/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)=FULL/6-31G*
 hartrees
Energy at 0K-1149.663914
Energy at 298.15K-1149.667890
HF Energy-1148.499779
Nuclear repulsion energy447.459249
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)=FULL/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 3218 3124        
2 Ag 1652 1603        
3 Ag 1217 1182        
4 Ag 1128 1095        
5 Ag 764 742        
6 Ag 331 322        
7 Au 898 871        
8 Au 405 393        
9 B1g 812 788        
10 B1u 3204 3110        
11 B1u 1532 1487        
12 B1u 1131 1098        
13 B1u 1026 995        
14 B1u 556 540        
15 B2g 865 840        
16 B2g 543 527        
17 B2g 293 284        
18 B2u 3217 3123        
19 B2u 1439 1397        
20 B2u 1316 1277        
21 B2u 1140 1107        
22 B2u 223 216        
23 B3g 3204 3110        
24 B3g 1635 1587        
25 B3g 1325 1286        
26 B3g 639 620        
27 B3g 356 345        
28 B3u 792 769        
29 B3u 475 461        
30 B3u 103 100        

Unscaled Zero Point Vibrational Energy (zpe) 17718.7 cm-1
Scaled (by 0.9707) Zero Point Vibrational Energy (zpe) 17199.5 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)=FULL/6-31G*
ABC
0.18795 0.02209 0.01977

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.388
C2 0.000 0.000 -1.388
C3 0.000 1.216 0.699
C4 0.000 -1.216 0.699
C5 0.000 -1.216 -0.699
C6 0.000 1.216 -0.699
Cl7 0.000 0.000 3.134
Cl8 0.000 0.000 -3.134
H9 0.000 2.155 1.250
H10 0.000 -2.155 1.250
H11 0.000 -2.155 -1.250
H12 0.000 2.155 -1.250

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.77641.39761.39762.41552.41551.74634.52272.15972.15973.40643.4064
C22.77642.41552.41551.39761.39764.52271.74633.40643.40642.15972.1597
C31.39762.41552.43182.80501.39802.72214.02171.08893.41583.89392.1633
C41.39762.41552.43181.39802.80502.72214.02173.41581.08892.16333.8939
C52.41551.39762.80501.39802.43184.02172.72213.89392.16331.08893.4158
C62.41551.39761.39802.80502.43184.02172.72212.16333.89393.41581.0889
Cl71.74634.52272.72212.72214.02174.02176.26902.86312.86314.88534.8853
Cl84.52271.74634.02174.02172.72212.72216.26904.88534.88532.86312.8631
H92.15973.40641.08893.41583.89392.16332.86314.88534.31054.98272.4995
H102.15973.40643.41581.08892.16333.89392.86314.88534.31052.49954.9827
H113.40642.15973.89392.16331.08893.41584.88532.86314.98272.49954.3105
H123.40642.15972.16333.89393.41581.08894.88532.86312.49954.98274.3105

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 119.544 C1 C3 H9 120.073
C1 C4 C5 119.544 C1 C4 H10 120.073
C2 C5 C4 119.544 C2 C5 H11 120.073
C2 C6 C3 119.544 C2 C6 H12 120.073
C3 C1 C4 120.911 C3 C1 Cl7 119.544
C3 C6 H12 120.382 C4 C1 Cl7 119.544
C4 C5 H11 120.382 C5 C2 C6 120.911
C5 C2 Cl8 119.544 C5 C4 H10 120.382
C6 C2 Cl8 119.544 C6 C3 H9 120.382
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability