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 (1,3-dichlorobenzene)

using model chemistry: MP2/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-65.091796
Energy at 298.15K 
HF Energy-64.488764
Nuclear repulsion energy158.803605
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/CEP-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3175 3099 1.76      
2 A1 3173 3096 9.56      
3 A1 3141 3066 6.32      
4 A1 1568 1530 28.57      
5 A1 1410 1377 9.61      
6 A1 1113 1086 7.44      
7 A1 1059 1034 25.07      
8 A1 981 958 3.97      
9 A1 654 638 1.00      
10 A1 372 363 2.55      
11 A1 183 178 0.71      
12 A2 657 641 0.00      
13 A2 274 268 0.00      
14 A2 181 176 0.00      
15 B1 731 714 0.45      
16 B1 682 666 76.40      
17 B1 599 585 21.74      
18 B1 285 278 0.61      
19 B1 149 146 0.16      
20 B1 1052i 1026i 4.12      
21 B2 3165 3089 3.68      
22 B2 1565 1528 82.75      
23 B2 1461 1426 44.86      
24 B2 1342 1309 0.06      
25 B2 1295 1264 1.46      
26 B2 1198 1169 0.64      
27 B2 1083 1057 17.08      
28 B2 751 733 61.23      
29 B2 409 399 3.87      
30 B2 342 334 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 15973.2 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 15589.8 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/CEP-121G
ABC
0.08852 0.02668 0.02050

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 2.137
C2 0.000 1.243 1.434
C3 0.000 -1.243 1.434
C4 0.000 1.216 0.011
C5 0.000 -1.216 0.011
C6 0.000 0.000 -0.730
Cl7 0.000 2.803 -0.915
Cl8 0.000 -2.803 -0.915
H9 0.000 0.000 3.230
H10 0.000 2.196 1.967
H11 0.000 -2.196 1.967
H12 0.000 0.000 -1.820

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C11.42851.42852.44982.44982.86694.14454.14451.09322.20212.20213.9575
C21.42852.48651.42332.84132.49512.81984.67892.18501.09143.47993.4833
C31.42852.48652.84131.42332.49514.67892.81982.18503.47991.09143.4833
C42.44981.42332.84132.43191.42361.83764.12453.44182.18793.93262.1978
C52.44982.84131.42332.43191.42364.12451.83763.44183.93262.18792.1978
C62.86692.49512.49511.42361.42362.80942.80943.96013.47743.47741.0906
Cl74.14452.81984.67891.83764.12452.80945.60655.00462.94585.77022.9457
Cl84.14454.67892.81984.12451.83762.80945.60655.00465.77022.94582.9457
H91.09322.18502.18503.44183.44183.96015.00465.00462.53312.53315.0507
H102.20211.09143.47992.18793.93263.47742.94585.77022.53314.39104.3776
H112.20213.47991.09143.93262.18793.47745.77022.94582.53314.39104.3776
H123.95753.48333.48332.19782.19781.09062.94572.94575.05074.37764.3776

picture of 1,3-dichlorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 118.410 C1 C2 H10 121.239
C1 C3 C5 118.410 C1 C3 H11 121.239
C2 C1 C3 120.984 C2 C1 H9 119.508
C2 C4 C6 122.430 C2 C4 Cl7 119.160
C3 C1 H9 119.508 C3 C5 C6 122.430
C3 C5 Cl8 119.160 C4 C2 H10 120.351
C4 C6 C5 117.336 C4 C6 H12 121.332
C5 C3 H11 120.351 C5 C6 H12 121.332
C6 C4 Cl7 118.410 C6 C5 Cl8 118.410
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability