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: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-1149.618907
Energy at 298.15K-1149.622809
HF Energy-1148.499274
Nuclear repulsion energy446.795731
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 MP4/6-31G*
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 3217 3072        
2 Ag 1637 1563        
3 Ag 1214 1159        
4 Ag 1123 1072        
5 Ag 760 725        
6 Ag 329 315        
7 Au 880 841        
8 Au 402 384        
9 B1g 800 764        
10 B1u 3202 3057        
11 B1u 1521 1453        
12 B1u 1125 1075        
13 B1u 1021 975        
14 B1u 553 528        
15 B2g 854 815        
16 B2g 505 482        
17 B2g 289 276        
18 B2u 3216 3070        
19 B2u 1434 1369        
20 B2u 1353 1292        
21 B2u 1136 1085        
22 B2u 221 211        
23 B3g 3203 3058        
24 B3g 1624 1551        
25 B3g 1319 1259        
26 B3g 635 606        
27 B3g 353 338        
28 B3u 778 743        
29 B3u 468 446        
30 B3u 102 97        

Unscaled Zero Point Vibrational Energy (zpe) 17636.4 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 16839.2 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 MP4/6-31G*
ABC
0.18742 0.02202 0.01971

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.391
C2 0.000 0.000 -1.391
C3 0.000 1.218 0.700
C4 0.000 -1.218 0.700
C5 0.000 -1.218 -0.700
C6 0.000 1.218 -0.700
Cl7 0.000 0.000 3.139
Cl8 0.000 0.000 -3.139
H9 0.000 2.158 1.250
H10 0.000 -2.158 1.250
H11 0.000 -2.158 -1.250
H12 0.000 2.158 -1.250

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.78121.39991.39992.41932.41931.74884.53002.16252.16253.41043.4104
C22.78122.41932.41931.39991.39994.53001.74883.41043.41042.16252.1625
C31.39992.41932.43542.80901.39982.72654.02781.08953.42023.89852.1650
C41.39992.41932.43541.39982.80902.72654.02783.42021.08952.16503.8985
C52.41931.39992.80901.39982.43544.02782.72653.89852.16501.08953.4202
C62.41931.39991.39982.80902.43544.02782.72652.16503.89853.42021.0895
Cl71.74884.53002.72652.72654.02784.02786.27882.86802.86804.89144.8914
Cl84.53001.74884.02784.02782.72652.72656.27884.89144.89142.86802.8680
H92.16253.41041.08953.42023.89852.16502.86804.89144.31594.98792.5005
H102.16253.41043.42021.08952.16503.89852.86804.89144.31592.50054.9879
H113.41042.16253.89852.16501.08953.42024.89142.86804.98792.50054.3159
H123.41042.16252.16503.89853.42021.08954.89142.86802.50054.98794.3159

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 119.562 C1 C3 H9 120.096
C1 C4 C5 119.562 C1 C4 H10 120.096
C2 C5 C4 119.562 C2 C5 H11 120.096
C2 C6 C3 119.562 C2 C6 H12 120.096
C3 C1 C4 120.875 C3 C1 Cl7 119.562
C3 C6 H12 120.342 C4 C1 Cl7 119.562
C4 C5 H11 120.342 C5 C2 C6 120.875
C5 C2 Cl8 119.562 C5 C4 H10 120.342
C6 C2 Cl8 119.562 C6 C3 H9 120.342
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability