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All results from a given calculation for C6H4Cl2 (1,2-dichlorobenzene)

using model chemistry: CCD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-1143.893369
Energy at 298.15K-1143.897587
HF Energy-1143.052857
Nuclear repulsion energy465.441722
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 CCD/3-21G*
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 3199 3060 5.26      
2 A1 3180 3042 4.80      
3 A1 1591 1522 0.65      
4 A1 1516 1450 46.45      
5 A1 1255 1200 0.06      
6 A1 1176 1125 1.88      
7 A1 1155 1105 24.33      
8 A1 1051 1005 5.75      
9 A1 692 662 11.05      
10 A1 479 458 7.00      
11 A1 204 195 0.00      
12 A2 944 903 0.00      
13 A2 863 825 0.00      
14 A2 687 657 0.00      
15 A2 521 498 0.00      
16 A2 140 134 0.00      
17 B1 935 894 2.57      
18 B1 765 731 77.50      
19 B1 450 430 6.24      
20 B1 237 227 1.23      
21 B2 3192 3053 2.76      
22 B2 3168 3030 1.20      
23 B2 1606 1537 3.08      
24 B2 1488 1423 15.83      
25 B2 1318 1261 4.48      
26 B2 1166 1115 4.00      
27 B2 1093 1046 26.28      
28 B2 768 734 14.16      
29 B2 437 418 0.65      
30 B2 344 329 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 17808.7 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 17034.0 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 CCD/3-21G*
ABC
0.06278 0.04680 0.02681

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.701 -0.026
C2 0.000 -0.701 -0.026
C3 0.000 1.402 1.191
C4 0.000 -1.402 1.191
C5 0.000 0.703 2.406
C6 0.000 -0.703 2.406
Cl7 0.000 1.613 -1.526
Cl8 0.000 -1.613 -1.526
H9 0.000 2.490 1.172
H10 0.000 -2.490 1.172
H11 0.000 1.254 3.345
H12 0.000 -1.254 3.345

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C11.40261.40412.42992.43242.80871.75532.75802.15283.40863.41613.8971
C21.40262.42991.40412.80872.43242.75801.75533.40862.15283.89713.4161
C31.40412.42992.80401.40222.43072.72484.05851.08793.89182.15943.4198
C42.42991.40412.80402.43071.40224.05852.72483.89181.08793.41982.1594
C52.43242.80871.40222.43071.40594.03624.56372.17163.42291.08852.1704
C62.80872.43242.43071.40221.40594.56374.03623.42292.17162.17041.0885
Cl71.75532.75802.72484.05854.03624.56373.22642.83694.91064.88425.6521
Cl82.75801.75534.05852.72484.56374.03623.22644.91062.83695.65214.8842
H92.15283.40861.08793.89182.17163.42292.83694.91064.97952.49974.3285
H103.40862.15283.89181.08793.42292.17164.91062.83694.97954.32852.4997
H113.41613.89712.15943.41981.08852.17044.88425.65212.49974.32852.5078
H123.89713.41613.41982.15942.17041.08855.65214.88424.32852.49972.5078

picture of 1,2-dichlorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 119.935 C1 C2 Cl8 121.300
C1 C3 C5 120.164 C1 C3 H9 118.959
C2 C1 C3 119.935 C2 C1 Cl7 121.300
C2 C4 C6 120.164 C2 C4 H10 118.959
C3 C1 Cl7 118.764 C3 C5 C6 119.901
C3 C5 H11 119.691 C4 C2 Cl8 118.764
C4 C6 C5 119.901 C4 C6 H12 119.691
C5 C3 H9 120.877 C5 C6 H12 120.408
C6 C4 H10 120.877 C6 C5 H11 120.408
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability