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=FULL/6-311+G(3df,2p)

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=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-1150.273457
Energy at 298.15K-1150.277600
HF Energy-1148.632547
Nuclear repulsion energy451.791966
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=FULL/6-311+G(3df,2p)
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 3246 3060 0.00      
2 Ag 1627 1534 0.00      
3 Ag 1197 1129 0.00      
4 Ag 1136 1071 0.00      
5 Ag 757 714 0.00      
6 Ag 332 313 0.00      
7 Au 981 925 0.00      
8 Au 418 394 0.00      
9 B1g 839 791 0.00      
10 B1u 3223 3038 0.56      
11 B1u 1504 1418 97.65      
12 B1u 1118 1054 52.31      
13 B1u 797 751 102.52      
14 B1u 539 508 3.67      
15 B2g 952 897 0.00      
16 B2g 656 618 0.00      
17 B2g 305 288 0.00      
18 B2u 3244 3058 0.07      
19 B2u 1479 1395 0.75      
20 B2u 1409 1328 4.84      
21 B2u 1122 1058 6.28      
22 B2u 228 215 0.66      
23 B3g 3230 3045 0.00      
24 B3g 1612 1520 0.00      
25 B3g 1309 1234 0.00      
26 B3g 614 579 0.00      
27 B3g 360 340 0.00      
28 B3u 843 795 50.23      
29 B3u 495 467 17.20      
30 B3u 102 96 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 17837.1 cm-1
Scaled (by 0.9427) Zero Point Vibrational Energy (zpe) 16815.1 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=FULL/6-311+G(3df,2p)
ABC
0.19085 0.02255 0.02017

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311+G(3df,2p)

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 1.207 0.694
C4 0.000 -1.207 0.694
C5 0.000 -1.207 -0.694
C6 0.000 1.207 -0.694
Cl7 0.000 0.000 3.101
Cl8 0.000 0.000 -3.101
H9 0.000 2.139 1.240
H10 0.000 -2.139 1.240
H11 0.000 -2.139 -1.240
H12 0.000 2.139 -1.240

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.76281.38871.38872.40072.40071.71924.48202.14372.14373.38333.3833
C22.76282.40072.40071.38871.38874.48201.71923.38333.38332.14372.1437
C31.38872.40072.41322.78391.38802.69213.98181.08053.38983.86442.1470
C41.38872.40072.41321.38802.78392.69213.98183.38981.08052.14703.8644
C52.40071.38872.78391.38802.41323.98182.69213.86442.14701.08053.3898
C62.40071.38871.38802.78392.41323.98182.69212.14703.86443.38981.0805
Cl71.71924.48202.69212.69213.98183.98186.20122.83502.83504.83904.8390
Cl84.48201.71923.98183.98182.69212.69216.20124.83904.83902.83502.8350
H92.14373.38331.08053.38983.86442.14702.83504.83904.27804.94482.4800
H102.14373.38333.38981.08052.14703.86442.83504.83904.27802.48004.9448
H113.38332.14373.86442.14701.08053.38984.83902.83504.94482.48004.2780
H123.38332.14372.14703.86443.38981.08054.83902.83502.48004.94484.2780

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 119.669 C1 C3 H9 119.979
C1 C4 C5 119.669 C1 C4 H10 119.979
C2 C5 C4 119.669 C2 C5 H11 119.979
C2 C6 C3 119.669 C2 C6 H12 119.979
C3 C1 C4 120.662 C3 C1 Cl7 119.669
C3 C6 H12 120.351 C4 C1 Cl7 119.669
C4 C5 H11 120.351 C5 C2 C6 120.662
C5 C2 Cl8 119.669 C5 C4 H10 120.351
C6 C2 Cl8 119.669 C6 C3 H9 120.351
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability