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All results from a given calculation for C6H4Cl2 (1,2-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 C2V 1A1
Energy calculated at CCSD/6-31G(2df,p)
 hartrees
Energy at 0K-1149.827205
Energy at 298.15K-1149.831486
HF Energy-1148.526402
Nuclear repulsion energy469.791935
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 A1 3262 3084 3.24      
2 A1 3246 3069 3.94      
3 A1 1647 1557 3.61      
4 A1 1520 1437 59.79      
5 A1 1271 1202 0.80      
6 A1 1194 1129 11.73      
7 A1 1182 1118 22.99      
8 A1 1072 1014 4.73      
9 A1 676 639 13.65      
10 A1 490 464 4.65      
11 A1 204 193 0.00      
12 A2 987 933 0.00      
13 A2 892 844 0.00      
14 A2 699 661 0.00      
15 A2 524 495 0.00      
16 A2 141 133 0.00      
17 B1 964 911 1.48      
18 B1 786 743 51.98      
19 B1 452 427 3.15      
20 B1 239 226 0.50      
21 B2 3257 3080 1.28      
22 B2 3233 3057 0.88      
23 B2 1656 1566 5.35      
24 B2 1482 1401 18.76      
25 B2 1294 1224 3.10      
26 B2 1169 1106 2.62      
27 B2 1054 997 32.14      
28 B2 761 720 13.90      
29 B2 436 412 0.46      
30 B2 342 323 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 18065.4 cm-1
Scaled (by 0.9455) Zero Point Vibrational Energy (zpe) 17080.8 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
0.06383 0.04778 0.02733

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.698 -0.031
C2 0.000 -0.698 -0.031
C3 0.000 1.392 1.179
C4 0.000 -1.392 1.179
C5 0.000 0.697 2.382
C6 0.000 -0.697 2.382
Cl7 0.000 1.599 -1.509
Cl8 0.000 -1.599 -1.509
H9 0.000 2.474 1.160
H10 0.000 -2.474 1.160
H11 0.000 1.245 3.316
H12 0.000 -1.245 3.316

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C11.39561.39402.41402.41282.78681.73182.73182.13783.38743.39113.8697
C21.39562.41401.39402.78682.41282.73181.73183.38742.13783.86973.3911
C31.39402.41402.78321.39002.41042.69584.02101.08223.86532.14273.3943
C42.41401.39402.78322.41041.39004.02102.69583.86531.08223.39432.1427
C52.41282.78681.39002.41041.39333.99494.51832.15703.39791.08292.1545
C62.78682.41282.41041.39001.39334.51833.99493.39792.15702.15451.0829
Cl71.73182.73182.69584.02103.99494.51833.19822.80864.86944.83845.6013
Cl82.73181.73184.02102.69584.51833.99493.19824.86942.80865.60134.8384
H92.13783.38741.08223.86532.15703.39792.80864.86944.94732.48194.2987
H103.38742.13783.86531.08223.39792.15704.86942.80864.94734.29872.4819
H113.39113.86972.14273.39431.08292.15454.83845.60132.48194.29872.4900
H123.86973.39113.39432.14272.15451.08295.60134.83844.29872.48192.4900

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 119.849 C1 C2 Cl8 121.363
C1 C3 C5 120.153 C1 C3 H9 118.852
C2 C1 C3 119.849 C2 C1 Cl7 121.363
C2 C4 C6 120.153 C2 C4 H10 118.852
C3 C1 Cl7 118.787 C3 C5 C6 119.998
C3 C5 H11 119.581 C4 C2 Cl8 118.787
C4 C6 C5 119.998 C4 C6 H12 119.581
C5 C3 H9 120.995 C5 C6 H12 120.421
C6 C4 H10 120.995 C6 C5 H11 120.421
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability