return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B2PLYP=FULLultrafine/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at B2PLYP=FULLultrafine/3-21G
 hartrees
Energy at 0K-1145.068769
Energy at 298.15K 
HF Energy-1144.852212
Nuclear repulsion energy441.618903
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 B2PLYP=FULLultrafine/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 Ag 3261 3261 0.00      
2 Ag 1598 1598 0.00      
3 Ag 1243 1243 0.00      
4 Ag 1103 1103 0.00      
5 Ag 750 750 0.00      
6 Ag 321 321 0.00      
7 Au 1007 1007 0.00      
8 Au 439 439 0.00      
9 B1g 860 860 0.00      
10 B1u 3246 3246 0.18      
11 B1u 1537 1537 86.48      
12 B1u 1111 1111 104.03      
13 B1u 1065 1065 70.34      
14 B1u 506 506 37.62      
15 B2g 994 994 0.00      
16 B2g 742 742 0.00      
17 B2g 301 301 0.00      
18 B2u 3259 3259 0.02      
19 B2u 1434 1434 8.77      
20 B2u 1313 1313 2.24      
21 B2u 1148 1148 3.59      
22 B2u 203 203 1.93      
23 B3g 3246 3246 0.00      
24 B3g 1615 1615 0.00      
25 B3g 1375 1375 0.00      
26 B3g 669 669 0.00      
27 B3g 334 334 0.00      
28 B3u 868 868 74.70      
29 B3u 507 507 27.53      
30 B3u 103 103 1.06      

Unscaled Zero Point Vibrational Energy (zpe) 18078.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18078.9 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 B2PLYP=FULLultrafine/3-21G
ABC
0.18806 0.02128 0.01912

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.371
C2 0.000 0.000 -1.371
C3 0.000 1.217 0.700
C4 0.000 -1.217 0.700
C5 0.000 -1.217 -0.700
C6 0.000 1.217 -0.700
Cl7 0.000 0.000 3.203
Cl8 0.000 0.000 -3.203
H9 0.000 2.146 1.252
H10 0.000 -2.146 1.252
H11 0.000 -2.146 -1.252
H12 0.000 2.146 -1.252

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.74131.38951.38952.40152.40151.83204.57332.14932.14933.38863.3886
C22.74132.40152.40151.38951.38954.57331.83203.38863.38862.14932.1493
C31.38952.40152.43372.80741.39952.78304.08771.08083.40783.88812.1614
C41.38952.40152.43371.39952.80742.78304.08773.40781.08082.16143.8881
C52.40151.38952.80741.39952.43374.08772.78303.88812.16141.08083.4078
C62.40151.38951.39952.80742.43374.08772.78302.16143.88813.40781.0808
Cl71.83204.57332.78302.78304.08774.08776.40532.90022.90024.94444.9444
Cl84.57331.83204.08774.08772.78302.78306.40534.94444.94442.90022.9002
H92.14933.38861.08083.40783.88812.16142.90024.94444.29204.96882.5035
H102.14933.38863.40781.08082.16143.88812.90024.94444.29202.50354.9688
H113.38862.14933.88812.16141.08083.40784.94442.90024.96882.50354.2920
H123.38862.14932.16143.88813.40781.08084.94442.90022.50354.96884.2920

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 118.870 C1 C3 H9 120.416
C1 C4 C5 118.870 C1 C4 H10 120.416
C2 C5 C4 118.870 C2 C5 H11 120.416
C2 C6 C3 118.870 C2 C6 H12 120.416
C3 C1 C4 122.260 C3 C1 Cl7 118.870
C3 C6 H12 120.713 C4 C1 Cl7 118.870
C4 C5 H11 120.713 C5 C2 C6 122.260
C5 C2 Cl8 118.870 C5 C4 H10 120.713
C6 C2 Cl8 118.870 C6 C3 H9 120.713
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability