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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-1143.496848
Energy at 298.15K-1143.501043
HF Energy-1142.836812
Nuclear repulsion energy459.056233
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 3205 3116 4.22      
2 A1 3185 3097 5.29      
3 A1 1602 1558 1.31      
4 A1 1523 1481 38.51      
5 A1 1263 1228 0.08      
6 A1 1186 1153 0.07      
7 A1 1158 1126 17.77      
8 A1 1050 1021 4.49      
9 A1 685 666 11.23      
10 A1 452 439 7.36      
11 A1 189 184 0.01      
12 A2 956 929 0.00      
13 A2 885 861 0.00      
14 A2 732 712 0.00      
15 A2 531 517 0.00      
16 A2 141 137 0.00      
17 B1 955 929 4.20      
18 B1 774 753 77.11      
19 B1 461 448 7.65      
20 B1 237 231 1.09      
21 B2 3200 3111 1.16      
22 B2 3171 3083 1.68      
23 B2 1606 1562 4.34      
24 B2 1491 1450 14.71      
25 B2 1324 1287 3.38      
26 B2 1160 1128 2.46      
27 B2 1083 1053 32.97      
28 B2 750 730 16.00      
29 B2 412 400 0.85      
30 B2 326 317 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 17845.7 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 17351.4 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
0.06078 0.04541 0.02599

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 0.695 0.007
C2 0.000 -0.695 0.007
C3 0.000 1.402 1.213
C4 0.000 -1.402 1.213
C5 0.000 0.703 2.430
C6 0.000 -0.703 2.430
Cl7 0.000 1.653 -1.556
Cl8 0.000 -1.653 -1.556
H9 0.000 2.489 1.191
H10 0.000 -2.489 1.191
H11 0.000 1.254 3.369
H12 0.000 -1.254 3.369

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C11.39091.39842.42002.42352.79811.83282.82082.14933.39763.40813.8864
C21.39092.42001.39842.79812.42352.82081.83283.39762.14933.88643.4081
C31.39842.42002.80431.40332.43152.78114.12351.08723.89132.16033.4207
C42.42001.39842.80432.43151.40334.12352.78113.89131.08723.42072.1603
C52.42352.79811.40332.43151.40614.09814.63052.17403.42431.08832.1705
C62.79812.42352.43151.40331.40614.63054.09813.42432.17402.17051.0883
Cl71.83282.82082.78114.12354.09814.63053.30542.87174.97014.94115.7189
Cl82.82081.83284.12352.78114.63054.09813.30544.97012.87175.71894.9411
H92.14933.39761.08723.89132.17403.42432.87174.97014.97822.50364.3307
H103.39762.14933.89131.08723.42432.17404.97012.87174.97824.33072.5036
H113.40813.88642.16033.42071.08832.17054.94115.71892.50364.33072.5083
H123.88643.40813.42072.16032.17051.08835.71894.94114.33072.50362.5083

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 120.354 C1 C2 Cl8 121.484
C1 C3 C5 119.765 C1 C3 H9 119.163
C2 C1 C3 120.354 C2 C1 Cl7 121.484
C2 C4 C6 119.765 C2 C4 H10 119.163
C3 C1 Cl7 118.162 C3 C5 C6 119.881
C3 C5 H11 119.697 C4 C2 Cl8 118.162
C4 C6 C5 119.881 C4 C6 H12 119.697
C5 C3 H9 121.072 C5 C6 H12 120.422
C6 C4 H10 121.072 C6 C5 H11 120.422
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability