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

using model chemistry: MP2/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at MP2/aug-cc-pVTZ
 hartrees
Energy at 0K-1149.992051
Energy at 298.15K-1149.996168
HF Energy-1148.650680
Nuclear repulsion energy450.001158
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 MP2/aug-cc-pVTZ
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 3238 3086 0.00      
2 Ag 1613 1537 0.00      
3 Ag 1184 1128 0.00      
4 Ag 1122 1070 0.00      
5 Ag 757 721 0.00      
6 Ag 331 315 0.00      
7 Au 948 904 0.00      
8 Au 389 371 0.00      
9 B1g 822 783 0.00      
10 B1u 3222 3070 0.27      
11 B1u 1494 1423 95.87      
12 B1u 1115 1063 94.70      
13 B1u 1024 976 43.15      
14 B1u 563 536 23.92      
15 B2g 920 877 0.00      
16 B2g 639 609 0.00      
17 B2g 294 281 0.00      
18 B2u 3236 3084 0.07      
19 B2u 1467 1398 0.63      
20 B2u 1396 1330 5.03      
21 B2u 1109 1057 6.57      
22 B2u 220 210 0.73      
23 B3g 3223 3071 0.00      
24 B3g 1610 1534 0.00      
25 B3g 1300 1239 0.00      
26 B3g 628 599 0.00      
27 B3g 350 334 0.00      
28 B3u 827 788 49.02      
29 B3u 484 461 17.92      
30 B3u 101 96 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 17812.9 cm-1
Scaled (by 0.9529) Zero Point Vibrational Energy (zpe) 16973.9 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 MP2/aug-cc-pVTZ
ABC
0.18936 0.02237 0.02001

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.381
C2 0.000 0.000 -1.381
C3 0.000 1.212 0.696
C4 0.000 -1.212 0.696
C5 0.000 -1.212 -0.696
C6 0.000 1.212 -0.696
Cl7 0.000 0.000 3.114
Cl8 0.000 0.000 -3.114
H9 0.000 2.143 1.247
H10 0.000 -2.143 1.247
H11 0.000 -2.143 -1.247
H12 0.000 2.143 -1.247

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.76131.39201.39202.40462.40461.73324.49462.14672.14673.39023.3902
C22.76132.40462.40461.39201.39204.49461.73323.39023.39022.14672.1467
C31.39202.40462.42412.79551.39232.70463.99821.08113.39953.87662.1541
C41.39202.40462.42411.39232.79552.70463.99823.39951.08112.15413.8766
C52.40461.39202.79551.39232.42413.99822.70463.87662.15411.08113.3995
C62.40461.39201.39232.79552.42413.99822.70462.15413.87663.39951.0811
Cl71.73324.49462.70462.70463.99823.99826.22782.84202.84204.85854.8585
Cl84.49461.73323.99823.99822.70462.70466.22784.85854.85852.84202.8420
H92.14673.39021.08113.39953.87662.15412.84204.85854.28504.95762.4933
H102.14673.39023.39951.08112.15413.87662.84204.85854.28502.49334.9576
H113.39022.14673.87662.15411.08113.39954.85852.84204.95762.49334.2850
H123.39022.14672.15413.87663.39951.08114.85852.84202.49334.95764.2850

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 119.456 C1 C3 H9 119.933
C1 C4 C5 119.456 C1 C4 H10 119.933
C2 C5 C4 119.456 C2 C5 H11 119.933
C2 C6 C3 119.456 C2 C6 H12 119.933
C3 C1 C4 121.089 C3 C1 Cl7 119.456
C3 C6 H12 120.611 C4 C1 Cl7 119.456
C4 C5 H11 120.611 C5 C2 C6 121.089
C5 C2 Cl8 119.456 C5 C4 H10 120.611
C6 C2 Cl8 119.456 C6 C3 H9 120.611
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability