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All results from a given calculation for C6H4Cl2 (1,2-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-65.088189
Energy at 298.15K 
HF Energy-64.483281
Nuclear repulsion energy160.837904
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 3170 3094 16.73      
2 A1 3150 3074 9.00      
3 A1 1564 1526 3.43      
4 A1 1461 1426 42.32      
5 A1 1334 1302 0.27      
6 A1 1194 1165 0.05      
7 A1 1122 1095 22.47      
8 A1 1014 989 9.78      
9 A1 647 631 11.06      
10 A1 444 433 6.02      
11 A1 189 184 0.00      
12 A2 720 703 0.00      
13 A2 680 664 0.00      
14 A2 254 248 0.00      
15 A2 115 112 0.00      
16 A2 1140i 1113i 0.00      
17 B1 705 688 53.13      
18 B1 597 583 42.26      
19 B1 254 248 0.12      
20 B1 203 199 1.80      
21 B2 3161 3086 12.32      
22 B2 3136 3061 1.82      
23 B2 1567 1529 8.06      
24 B2 1424 1390 14.71      
25 B2 1269 1239 2.50      
26 B2 1127 1100 1.59      
27 B2 1011 987 38.97      
28 B2 722 704 14.76      
29 B2 405 395 0.34      
30 B2 319 311 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 15907.6 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 15525.9 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 MP2/CEP-121G
ABC
0.05896 0.04459 0.02539

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 0.713 -0.010
C2 0.000 -0.713 -0.010
C3 0.000 1.428 1.224
C4 0.000 -1.428 1.224
C5 0.000 0.714 2.459
C6 0.000 -0.714 2.459
Cl7 0.000 1.676 -1.567
Cl8 0.000 -1.676 -1.567
H9 0.000 2.520 1.204
H10 0.000 -2.520 1.204
H11 0.000 1.269 3.401
H12 0.000 -1.269 3.401

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C11.42551.42682.47122.46932.85211.83092.85152.17763.45353.45623.9449
C21.42552.47121.42682.85212.46932.85151.83093.45352.17763.94493.4562
C31.42682.47122.85611.42622.47282.80244.17481.09213.94812.18253.4656
C42.47121.42682.85612.47281.42624.17482.80243.94811.09213.46562.1825
C52.46932.85211.42622.47281.42874.13954.68252.19873.46911.09292.1954
C62.85212.46932.47281.42621.42874.68254.13953.46912.19872.19541.0929
Cl71.83092.85152.80244.17484.13954.68253.35252.89735.02904.98485.7753
Cl82.85151.83094.17482.80244.68254.13953.35255.02902.89735.77534.9848
H92.17763.45351.09213.94812.19873.46912.89735.02905.04002.52784.3793
H103.45352.17763.94811.09213.46912.19875.02902.89735.04004.37932.5278
H113.45623.94492.18253.46561.09292.19544.98485.77532.52784.37932.5374
H123.94493.45623.46562.18252.19541.09295.77534.98484.37932.52782.5374

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 120.089 C1 C2 Cl8 121.752
C1 C3 C5 119.884 C1 C3 H9 119.054
C2 C1 C3 120.089 C2 C1 Cl7 121.752
C2 C4 C6 119.884 C2 C4 H10 119.054
C3 C1 Cl7 118.159 C3 C5 C6 120.027
C3 C5 H11 119.492 C4 C2 Cl8 118.159
C4 C6 C5 120.027 C4 C6 H12 119.492
C5 C3 H9 121.062 C5 C6 H12 120.481
C6 C4 H10 121.062 C6 C5 H11 120.481
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability