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

using model chemistry: MP4/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at MP4/cc-pVDZ
 hartrees
Energy at 0K-1149.707419
Energy at 298.15K-1149.711437
HF Energy-1148.557058
Nuclear repulsion energy444.363266
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 MP4/cc-pVDZ
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 3227 3120        
2 Ag 1620 1566        
3 Ag 1176 1137        
4 Ag 1115 1078        
5 Ag 746 722        
6 Ag 326 315        
7 Au 932 901        
8 Au 404 391        
9 B1g 814 787        
10 B1u 3210 3104        
11 B1u 1494 1445        
12 B1u 1109 1073        
13 B1u 1007 974        
14 B1u 550 531        
15 B2g 900 871        
16 B2g 598 578        
17 B2g 291 281        
18 B2u 3225 3119        
19 B2u 1412 1365        
20 B2u 1347 1303        
21 B2u 1102 1066        
22 B2u 216 209        
23 B3g 3212 3105        
24 B3g 1606 1553        
25 B3g 1288 1245        
26 B3g 625 604        
27 B3g 344 333        
28 B3u 802 775        
29 B3u 473 457        
30 B3u 101 98        

Unscaled Zero Point Vibrational Energy (zpe) 17635.7 cm-1
Scaled (by 0.9669) Zero Point Vibrational Energy (zpe) 17052.0 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 MP4/cc-pVDZ
ABC
0.18522 0.02179 0.01950

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.401
C2 0.000 0.000 -1.401
C3 0.000 1.225 0.704
C4 0.000 -1.225 0.704
C5 0.000 -1.225 -0.704
C6 0.000 1.225 -0.704
Cl7 0.000 0.000 3.155
Cl8 0.000 0.000 -3.155
H9 0.000 2.171 1.258
H10 0.000 -2.171 1.258
H11 0.000 -2.171 -1.258
H12 0.000 2.171 -1.258

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.80191.40911.40912.43582.43581.75454.55652.17552.17553.43283.4328
C22.80192.43582.43581.40911.40914.55651.75453.43283.43282.17552.1755
C31.40912.43582.44982.82601.40882.74014.04961.09613.44063.92212.1787
C41.40912.43582.44981.40882.82602.74014.04963.44061.09612.17873.9221
C52.43581.40912.82601.40882.44984.04962.74013.92212.17871.09613.4406
C62.43581.40911.40882.82602.44984.04962.74012.17873.92213.44061.0961
Cl71.75454.55652.74012.74014.04964.04966.31102.88302.88304.91874.9187
Cl84.55651.75454.04964.04962.74012.74016.31104.91874.91872.88302.8830
H92.17553.43281.09613.44063.92212.17872.88304.91874.34165.01822.5166
H102.17553.43283.44061.09612.17873.92212.88304.91874.34162.51665.0182
H113.43282.17553.92212.17871.09613.44064.91872.88305.01822.51664.3416
H123.43282.17552.17873.92213.44061.09614.91872.88302.51665.01824.3416

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 119.625 C1 C3 H9 120.023
C1 C4 C5 119.625 C1 C4 H10 120.023
C2 C5 C4 119.625 C2 C5 H11 120.023
C2 C6 C3 119.625 C2 C6 H12 120.023
C3 C1 C4 120.750 C3 C1 Cl7 119.625
C3 C6 H12 120.352 C4 C1 Cl7 119.625
C4 C5 H11 120.352 C5 C2 C6 120.750
C5 C2 Cl8 119.625 C5 C4 H10 120.352
C6 C2 Cl8 119.625 C6 C3 H9 120.352
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability