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

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-1148.970293
Energy at 298.15K-1148.974045
HF Energy-1148.359605
Nuclear repulsion energy435.008381
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/SDD
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 3222 3110 0.00      
2 Ag 1577 1522 0.00      
3 Ag 1213 1171 0.00      
4 Ag 1065 1028 0.00      
5 Ag 720 695 0.00      
6 Ag 309 298 0.00      
7 Au 851 821 0.00      
8 Au 401 387 0.00      
9 B1g 762 736 0.00      
10 B1u 3199 3088 1.44      
11 B1u 1482 1431 72.44      
12 B1u 1087 1049 62.24      
13 B1u 1021 986 74.13      
14 B1u 498 481 20.78      
15 B2g 838 809 0.00      
16 B2g 626 604 0.00      
17 B2g 268 259 0.00      
18 B2u 3219 3108 8.36      
19 B2u 1393 1345 2.94      
20 B2u 1347 1300 0.02      
21 B2u 1114 1076 6.29      
22 B2u 204 197 1.55      
23 B3g 3198 3087 0.00      
24 B3g 1582 1527 0.00      
25 B3g 1331 1284 0.00      
26 B3g 635 613 0.00      
27 B3g 333 322 0.00      
28 B3u 738 712 89.74      
29 B3u 461 445 24.70      
30 B3u 92 89 0.53      

Unscaled Zero Point Vibrational Energy (zpe) 17392.5 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 16788.9 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/SDD
ABC
0.18120 0.02069 0.01857

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.404
C2 0.000 0.000 -1.404
C3 0.000 1.240 0.712
C4 0.000 -1.240 0.712
C5 0.000 -1.240 -0.712
C6 0.000 1.240 -0.712
Cl7 0.000 0.000 3.245
Cl8 0.000 0.000 -3.245
H9 0.000 2.183 1.263
H10 0.000 -2.183 1.263
H11 0.000 -2.183 -1.263
H12 0.000 2.183 -1.263

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.80791.42001.42002.45282.45281.84154.64942.18802.18803.44663.4466
C22.80792.45282.45281.42001.42004.64941.84153.44663.44662.18802.1880
C31.42002.45282.48022.86021.42452.82044.14741.09233.46763.95242.1888
C41.42002.45282.48021.42452.86022.82044.14743.46761.09232.18883.9524
C52.45281.42002.86021.42452.48024.14742.82043.95242.18881.09233.4676
C62.45281.42001.42452.86022.48024.14742.82042.18883.95243.46761.0923
Cl71.84154.64942.82042.82044.14744.14746.49082.94932.94935.00925.0092
Cl84.64941.84154.14744.14742.82042.82046.49085.00925.00922.94932.9493
H92.18803.44661.09233.46763.95242.18882.94935.00924.36695.04472.5257
H102.18803.44663.46761.09232.18883.95242.94935.00924.36692.52575.0447
H113.44662.18803.95242.18881.09233.46765.00922.94935.04472.52574.3669
H123.44662.18802.18883.95243.46761.09235.00922.94932.52575.04474.3669

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 119.152 C1 C3 H9 120.579
C1 C4 C5 119.152 C1 C4 H10 120.579
C2 C5 C4 119.152 C2 C5 H11 120.579
C2 C6 C3 119.152 C2 C6 H12 120.579
C3 C1 C4 121.697 C3 C1 Cl7 119.152
C3 C6 H12 120.269 C4 C1 Cl7 119.152
C4 C5 H11 120.269 C5 C2 C6 121.697
C5 C2 Cl8 119.152 C5 C4 H10 120.269
C6 C2 Cl8 119.152 C6 C3 H9 120.269
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability