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

using model chemistry: MP3=FULL/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 MP3=FULL/3-21G
 hartrees
Energy at 0K-1143.503442
Energy at 298.15K-1143.507615
HF Energy-1142.843329
Nuclear repulsion energy440.123801
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 MP3=FULL/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 3245 3245 0.00      
2 Ag 1618 1618 0.00      
3 Ag 1252 1252 0.00      
4 Ag 1111 1111 0.00      
5 Ag 755 755 0.00      
6 Ag 322 322 0.00      
7 Au 975 975 0.00      
8 Au 433 433 0.00      
9 B1g 859 859 0.00      
10 B1u 3228 3228 0.04      
11 B1u 1552 1552 75.20      
12 B1u 1126 1126 87.49      
13 B1u 1067 1067 60.68      
14 B1u 511 511 25.62      
15 B2g 944 944 0.00      
16 B2g 713 713 0.00      
17 B2g 304 304 0.00      
18 B2u 3242 3242 0.22      
19 B2u 1443 1443 9.04      
20 B2u 1203 1203 3.51      
21 B2u 1143 1143 1.12      
22 B2u 203 203 1.88      
23 B3g 3228 3228 0.00      
24 B3g 1620 1620 0.00      
25 B3g 1381 1381 0.00      
26 B3g 671 671 0.00      
27 B3g 337 337 0.00      
28 B3u 856 856 73.67      
29 B3u 506 506 26.72      
30 B3u 103 103 1.01      

Unscaled Zero Point Vibrational Energy (zpe) 17975.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17975.4 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 MP3=FULL/3-21G
ABC
0.18754 0.02110 0.01897

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/3-21G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.378
C2 0.000 0.000 -1.378
C3 0.000 1.218 0.702
C4 0.000 -1.218 0.702
C5 0.000 -1.218 -0.702
C6 0.000 1.218 -0.702
Cl7 0.000 0.000 3.216
Cl8 0.000 0.000 -3.216
H9 0.000 2.151 1.255
H10 0.000 -2.151 1.255
H11 0.000 -2.151 -1.255
H12 0.000 2.151 -1.255

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.75561.39321.39322.41012.41011.83844.59402.15452.15453.39953.3995
C22.75562.41012.41011.39321.39324.59401.83843.39953.39952.15452.1545
C31.39322.41012.43642.81181.40362.79404.10301.08433.41433.89612.1674
C41.39322.41012.43641.40362.81182.79404.10303.41431.08432.16743.8961
C52.41011.39322.81181.40362.43644.10302.79403.89612.16741.08433.4143
C62.41011.39321.40362.81182.43644.10302.79402.16743.89613.41431.0843
Cl71.83844.59402.79402.79404.10304.10306.43242.91112.91114.96144.9614
Cl84.59401.83844.10304.10302.79402.79406.43244.96144.96142.91112.9111
H92.15453.39951.08433.41433.89612.16742.91114.96144.30204.98032.5093
H102.15453.39953.41431.08432.16743.89612.91114.96144.30202.50934.9803
H113.39952.15453.89612.16741.08433.41434.96142.91114.98032.50934.3020
H123.39952.15452.16743.89613.41431.08434.96142.91112.50934.98034.3020

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 119.026 C1 C3 H9 120.320
C1 C4 C5 119.026 C1 C4 H10 120.320
C2 C5 C4 119.026 C2 C5 H11 120.320
C2 C6 C3 119.026 C2 C6 H12 120.320
C3 C1 C4 121.948 C3 C1 Cl7 119.026
C3 C6 H12 120.654 C4 C1 Cl7 119.026
C4 C5 H11 120.654 C5 C2 C6 121.948
C5 C2 Cl8 119.026 C5 C4 H10 120.654
C6 C2 Cl8 119.026 C6 C3 H9 120.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability