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

using model chemistry: CCD/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 CCD/TZVP
 hartrees
Energy at 0K-1149.741050
Energy at 298.15K 
HF Energy-1148.613696
Nuclear repulsion energy448.834870
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/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 3262 3092 0.00      
2 Ag 1668 1581 0.00      
3 Ag 1221 1158 0.00      
4 Ag 1140 1080 0.00      
5 Ag 773 733 0.00      
6 Ag 335 317 0.00      
7 Au 731 693 0.00      
8 Au 248 235 0.00      
9 B1g 769 729 0.00      
10 B1u 3246 3077 1.36      
11 B1u 1547 1466 92.09      
12 B1u 1140 1080 81.44      
13 B1u 1030 976 53.23      
14 B1u 560 531 21.61      
15 B2g 790 749 0.00      
16 B2g 276 262 0.00      
17 B2g 1398i 1325i 0.00      
18 B2u 3260 3091 2.62      
19 B2u 1450 1375 5.00      
20 B2u 1263 1197 0.34      
21 B2u 1143 1083 4.15      
22 B2u 221 209 0.98      
23 B3g 3247 3078 0.00      
24 B3g 1655 1568 0.00      
25 B3g 1341 1272 0.00      
26 B3g 646 612 0.00      
27 B3g 356 338 0.00      
28 B3u 707 671 66.47      
29 B3u 329 312 4.72      
30 B3u 91 86 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 16521.0 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 15661.9 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 CCD/TZVP
ABC
0.19041 0.02216 0.01985

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.380
C2 0.000 0.000 -1.380
C3 0.000 1.208 0.695
C4 0.000 -1.208 0.695
C5 0.000 -1.208 -0.695
C6 0.000 1.208 -0.695
Cl7 0.000 0.000 3.131
Cl8 0.000 0.000 -3.131
H9 0.000 2.141 1.241
H10 0.000 -2.141 1.241
H11 0.000 -2.141 -1.241
H12 0.000 2.141 -1.241

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.76041.38871.38872.40142.40141.75054.51092.14572.14573.38453.3845
C22.76042.40142.40141.38871.38874.51091.75053.38453.38452.14572.1457
C31.38872.40142.41612.78771.39052.71864.01211.08103.39343.86862.1494
C41.38872.40142.41611.39052.78772.71864.01213.39341.08102.14943.8686
C52.40141.38872.78771.39052.41614.01212.71863.86862.14941.08103.3934
C62.40141.38871.39052.78772.41614.01212.71862.14943.86863.39341.0810
Cl71.75054.51092.71862.71864.01214.01216.26142.85582.85584.86794.8679
Cl84.51091.75054.01214.01212.71862.71866.26144.86794.86792.85582.8558
H92.14573.38451.08103.39343.86862.14942.85584.86794.28234.94962.4820
H102.14573.38453.39341.08102.14943.86862.85584.86794.28232.48204.9496
H113.38452.14573.86862.14941.08103.39344.86792.85584.94962.48204.2823
H123.38452.14572.14943.86863.39341.08104.86792.85582.48204.94964.2823

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 119.552 C1 C3 H9 120.126
C1 C4 C5 119.552 C1 C4 H10 120.126
C2 C5 C4 119.552 C2 C5 H11 120.126
C2 C6 C3 119.552 C2 C6 H12 120.126
C3 C1 C4 120.896 C3 C1 Cl7 119.552
C3 C6 H12 120.322 C4 C1 Cl7 119.552
C4 C5 H11 120.322 C5 C2 C6 120.896
C5 C2 Cl8 119.552 C5 C4 H10 120.322
C6 C2 Cl8 119.552 C6 C3 H9 120.322
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability