return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-259.430118
Energy at 298.15K-259.433947
HF Energy-258.852661
Nuclear repulsion energy280.543430
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/LANL2DZ
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 3223 3104 0.00      
2 Ag 1582 1524 0.00      
3 Ag 1214 1169 0.00      
4 Ag 1069 1029 0.00      
5 Ag 722 696 0.00      
6 Ag 311 299 0.00      
7 Au 860 828 0.00      
8 Au 403 388 0.00      
9 B1g 778 749 0.00      
10 B1u 3198 3080 1.76      
11 B1u 1486 1432 74.12      
12 B1u 1091 1050 62.18      
13 B1u 1020 983 68.04      
14 B1u 503 484 21.46      
15 B2g 845 814 0.00      
16 B2g 639 615 0.00      
17 B2g 283 273 0.00      
18 B2u 3220 3102 9.42      
19 B2u 1396 1345 2.47      
20 B2u 1348 1298 0.01      
21 B2u 1117 1076 6.24      
22 B2u 205 197 1.81      
23 B3g 3198 3080 0.00      
24 B3g 1583 1525 0.00      
25 B3g 1329 1280 0.00      
26 B3g 634 611 0.00      
27 B3g 335 322 0.00      
28 B3u 770 741 83.96      
29 B3u 473 456 30.63      
30 B3u 95 92 0.66      

Unscaled Zero Point Vibrational Energy (zpe) 17464.7 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 16820.2 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/LANL2DZ
ABC
0.18151 0.02078 0.01865

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.406
C2 0.000 0.000 -1.406
C3 0.000 1.239 0.712
C4 0.000 -1.239 0.712
C5 0.000 -1.239 -0.712
C6 0.000 1.239 -0.712
Cl7 0.000 0.000 3.237
Cl8 0.000 0.000 -3.237
H9 0.000 2.183 1.262
H10 0.000 -2.183 1.262
H11 0.000 -2.183 -1.262
H12 0.000 2.183 -1.262

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.81281.42011.42012.45422.45421.83094.64372.18752.18753.44783.4478
C22.81282.45422.45421.42011.42014.64371.83093.44783.44782.18752.1875
C31.42012.45422.47772.85801.42432.81274.13921.09263.46563.95052.1886
C41.42012.45422.47771.42432.85802.81274.13923.46561.09262.18863.9505
C52.45421.42012.85801.42432.47774.13922.81273.95052.18861.09263.4656
C62.45421.42011.42432.85802.47774.13922.81272.18863.95053.46561.0926
Cl71.83094.64372.81272.81274.13924.13926.47462.94352.94355.00125.0012
Cl84.64371.83094.13924.13922.81272.81276.47465.00125.00122.94352.9435
H92.18753.44781.09263.46563.95052.18862.94355.00124.36555.04312.5249
H102.18753.44783.46561.09262.18863.95052.94355.00124.36552.52495.0431
H113.44782.18753.95052.18861.09263.46565.00122.94355.04312.52494.3655
H123.44782.18752.18863.95053.46561.09265.00122.94352.52495.04314.3655

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 119.265 C1 C3 H9 120.492
C1 C4 C5 119.265 C1 C4 H10 120.492
C2 C5 C4 119.265 C2 C5 H11 120.492
C2 C6 C3 119.265 C2 C6 H12 120.492
C3 C1 C4 121.470 C3 C1 Cl7 119.265
C3 C6 H12 120.243 C4 C1 Cl7 119.265
C4 C5 H11 120.243 C5 C2 C6 121.470
C5 C2 Cl8 119.265 C5 C4 H10 120.243
C6 C2 Cl8 119.265 C6 C3 H9 120.243
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability