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

using model chemistry: CCSD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at CCSD/6-31G(2df,p)
 hartrees
Energy at 0K-1149.830577
Energy at 298.15K-1149.834821
HF Energy-1148.531337
Nuclear repulsion energy449.586397
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 CCSD/6-31G(2df,p)
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 3265 3087 0.00      
2 Ag 1657 1567 0.00      
3 Ag 1214 1148 0.00      
4 Ag 1143 1081 0.00      
5 Ag 768 726 0.00      
6 Ag 335 316 0.00      
7 Au 971 918 0.00      
8 Au 419 397 0.00      
9 B1g 856 810 0.00      
10 B1u 3249 3072 0.61      
11 B1u 1535 1452 98.58      
12 B1u 1138 1076 87.67      
13 B1u 1030 974 48.13      
14 B1u 565 534 23.46      
15 B2g 964 912 0.00      
16 B2g 694 656 0.00      
17 B2g 304 288 0.00      
18 B2u 3263 3086 0.33      
19 B2u 1440 1362 8.03      
20 B2u 1261 1193 0.21      
21 B2u 1136 1074 3.80      
22 B2u 224 211 1.19      
23 B3g 3250 3073 0.00      
24 B3g 1650 1560 0.00      
25 B3g 1330 1257 0.00      
26 B3g 639 604 0.00      
27 B3g 358 338 0.00      
28 B3u 854 808 46.68      
29 B3u 503 475 11.84      
30 B3u 105 99 0.69      

Unscaled Zero Point Vibrational Energy (zpe) 18059.9 cm-1
Scaled (by 0.9455) Zero Point Vibrational Energy (zpe) 17075.6 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 CCSD/6-31G(2df,p)
ABC
0.18950 0.02231 0.01996

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-31G(2df,p)

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 1.211 0.696
C4 0.000 -1.211 0.696
C5 0.000 -1.211 -0.696
C6 0.000 1.211 -0.696
Cl7 0.000 0.000 3.119
Cl8 0.000 0.000 -3.119
H9 0.000 2.144 1.245
H10 0.000 -2.144 1.245
H11 0.000 -2.144 -1.245
H12 0.000 2.144 -1.245

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.75921.39091.39092.40332.40331.73934.49852.14802.14803.38893.3889
C22.75922.40332.40331.39091.39094.49851.73933.38893.38892.14802.1480
C31.39092.40332.42262.79411.39212.70884.00261.08213.39973.87612.1534
C41.39092.40332.42261.39212.79412.70884.00263.39971.08212.15343.8761
C52.40331.39092.79411.39212.42264.00262.70883.87612.15341.08213.3997
C62.40331.39091.39212.79412.42264.00262.70882.15343.87613.39971.0821
Cl71.73934.49852.70882.70884.00264.00266.23782.84742.84744.86214.8621
Cl84.49851.73934.00264.00262.70882.70886.23784.86214.86212.84742.8474
H92.14803.38891.08213.39973.87612.15342.84744.86214.28764.95822.4900
H102.14803.38893.39971.08212.15343.87612.84744.86214.28762.49004.9582
H113.38892.14803.87612.15341.08213.39974.86212.84744.95822.49004.2876
H123.38892.14802.15343.87613.39971.08214.86212.84742.49004.95824.2876

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 119.437 C1 C3 H9 120.078
C1 C4 C5 119.437 C1 C4 H10 120.078
C2 C5 C4 119.437 C2 C5 H11 120.078
C2 C6 C3 119.437 C2 C6 H12 120.078
C3 C1 C4 121.125 C3 C1 Cl7 119.437
C3 C6 H12 120.485 C4 C1 Cl7 119.437
C4 C5 H11 120.485 C5 C2 C6 121.125
C5 C2 Cl8 119.437 C5 C4 H10 120.485
C6 C2 Cl8 119.437 C6 C3 H9 120.485
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability