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

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-1149.553331
Energy at 298.15K-1149.557299
HF Energy-1148.508098
Nuclear repulsion energy448.905752
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 MP2/6-31G**
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 3293 3084 0.00      
2 Ag 1660 1554 0.00      
3 Ag 1223 1145 0.00      
4 Ag 1143 1071 0.00      
5 Ag 772 723 0.00      
6 Ag 335 314 0.00      
7 Au 903 845 0.00      
8 Au 403 377 0.00      
9 B1g 815 763 0.00      
10 B1u 3278 3070 0.99      
11 B1u 1538 1441 95.67      
12 B1u 1144 1071 93.32      
13 B1u 1030 964 52.51      
14 B1u 567 531 23.32      
15 B2g 878 822 0.00      
16 B2g 459 430 0.00      
17 B2g 294 275 0.00      
18 B2u 3292 3083 1.56      
19 B2u 1480 1386 1.56      
20 B2u 1422 1331 3.97      
21 B2u 1145 1073 4.28      
22 B2u 224 210 0.95      
23 B3g 3279 3071 0.00      
24 B3g 1645 1541 0.00      
25 B3g 1333 1249 0.00      
26 B3g 640 600 0.00      
27 B3g 359 336 0.00      
28 B3u 787 737 58.19      
29 B3u 469 440 10.30      
30 B3u 101 95 0.56      

Unscaled Zero Point Vibrational Energy (zpe) 17955.2 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 16815.0 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 MP2/6-31G**
ABC
0.18910 0.02223 0.01989

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.386
C2 0.000 0.000 -1.386
C3 0.000 1.213 0.697
C4 0.000 -1.213 0.697
C5 0.000 -1.213 -0.697
C6 0.000 1.213 -0.697
Cl7 0.000 0.000 3.124
Cl8 0.000 0.000 -3.124
H9 0.000 2.146 1.243
H10 0.000 -2.146 1.243
H11 0.000 -2.146 -1.243
H12 0.000 2.146 -1.243

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.77271.39491.39492.41052.41051.73804.51072.15082.15083.39403.3940
C22.77272.41052.41051.39491.39494.51071.73803.39403.39402.15082.1508
C31.39492.41052.42522.79721.39392.71344.00911.08143.40273.87862.1529
C41.39492.41052.42521.39392.79722.71344.00913.40271.08142.15293.8786
C52.41051.39492.79721.39392.42524.00912.71343.87862.15291.08143.4027
C62.41051.39491.39392.79722.42524.00912.71342.15293.87863.40271.0814
Cl71.73804.51072.71342.71344.00914.00916.24872.85392.85394.86624.8662
Cl84.51071.73804.00914.00912.71342.71346.24874.86624.86622.85392.8539
H92.15083.39401.08143.40273.87862.15292.85394.86624.29204.96002.4861
H102.15083.39403.40271.08142.15293.87862.85394.86624.29202.48614.9600
H113.39402.15083.87862.15291.08143.40274.86622.85394.96002.48614.2920
H123.39402.15082.15293.87863.40271.08144.86622.85392.48614.96004.2920

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 119.620 C1 C3 H9 120.049
C1 C4 C5 119.620 C1 C4 H10 120.049
C2 C5 C4 119.620 C2 C5 H11 120.049
C2 C6 C3 119.620 C2 C6 H12 120.049
C3 C1 C4 120.760 C3 C1 Cl7 119.620
C3 C6 H12 120.331 C4 C1 Cl7 119.620
C4 C5 H11 120.331 C5 C2 C6 120.760
C5 C2 Cl8 119.620 C5 C4 H10 120.331
C6 C2 Cl8 119.620 C6 C3 H9 120.331
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability