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

using model chemistry: MP4/TZVP

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/TZVP
 hartrees
Energy at 0K-1149.807786
Energy at 298.15K 
HF Energy-1148.612307
Nuclear repulsion energy446.882538
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/TZVP
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 3227 3107        
2 Ag 1609 1549        
3 Ag 1197 1152        
4 Ag 1105 1064        
5 Ag 751 723        
6 Ag 326 314        
7 Au 646 622        
8 Au 152i 146i        
9 B1g 712 686        
10 B1u 3210 3091        
11 B1u 1504 1449        
12 B1u 1108 1067        
13 B1u 1002 965        
14 B1u 544 524        
15 B2g 746 718        
16 B2g 219 211        
17 B2g 1498i 1443i        
18 B2u 3225 3105        
19 B2u 1413 1361        
20 B2u 1327 1278        
21 B2u 1120 1078        
22 B2u 216 208        
23 B3g 3212 3093        
24 B3g 1601 1541        
25 B3g 1312 1264        
26 B3g 630 606        
27 B3g 346 333        
28 B3u 652 628        
29 B3u 221 213        
30 B3u 145 140        

Unscaled Zero Point Vibrational Energy (zpe) 15837.5 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 15249.9 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 MP4/TZVP
ABC
0.18847 0.02198 0.01968

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/TZVP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.387
C2 0.000 0.000 -1.387
C3 0.000 1.215 0.699
C4 0.000 -1.215 0.699
C5 0.000 -1.215 -0.699
C6 0.000 1.215 -0.699
Cl7 0.000 0.000 3.143
Cl8 0.000 0.000 -3.143
H9 0.000 2.150 1.246
H10 0.000 -2.150 1.246
H11 0.000 -2.150 -1.246
H12 0.000 2.150 -1.246

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.77351.39601.39602.41322.41321.75674.53022.15462.15463.39923.3992
C22.77352.41322.41321.39601.39604.53021.75673.39923.39922.15462.1546
C31.39602.41322.42922.80231.39722.73004.02951.08393.40893.88622.1580
C41.39602.41322.42921.39722.80232.73004.02953.40891.08392.15803.8862
C52.41321.39602.80231.39722.42924.02952.73003.88622.15801.08393.4089
C62.41321.39601.39722.80232.42924.02952.73002.15803.88623.40891.0839
Cl71.75674.53022.73002.73004.02954.02956.28702.86752.86754.88794.8879
Cl84.53021.75674.02954.02952.73002.73006.28704.88794.88792.86752.8675
H92.15463.39921.08393.40893.88622.15802.86754.88794.30004.97012.4923
H102.15463.39923.40891.08392.15803.88622.86754.88794.30002.49234.9701
H113.39922.15463.88622.15801.08393.40894.88792.86754.97012.49234.3000
H123.39922.15462.15803.88623.40891.08394.88792.86752.49234.97014.3000

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 119.535 C1 C3 H9 120.122
C1 C4 C5 119.535 C1 C4 H10 120.122
C2 C5 C4 119.535 C2 C5 H11 120.122
C2 C6 C3 119.535 C2 C6 H12 120.122
C3 C1 C4 120.930 C3 C1 Cl7 119.535
C3 C6 H12 120.343 C4 C1 Cl7 119.535
C4 C5 H11 120.343 C5 C2 C6 120.930
C5 C2 Cl8 119.535 C5 C4 H10 120.343
C6 C2 Cl8 119.535 C6 C3 H9 120.343
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability