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: MP2/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at MP2/cc-pVDZ
 hartrees
Energy at 0K-1149.611520
Energy at 298.15K-1149.615625
HF Energy-1148.558694
Nuclear repulsion energy446.306635
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 MP2/cc-pVDZ
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 3256 3101 0.00      
2 Ag 1636 1558 0.00      
3 Ag 1187 1131 0.00      
4 Ag 1134 1081 0.00      
5 Ag 760 723 0.00      
6 Ag 332 316 0.00      
7 Au 943 898 0.00      
8 Au 409 389 0.00      
9 B1g 824 785 0.00      
10 B1u 3240 3086 0.70      
11 B1u 1504 1433 100.44      
12 B1u 1125 1072 87.53      
13 B1u 1019 971 42.97      
14 B1u 564 537 23.31      
15 B2g 914 870 0.00      
16 B2g 605 576 0.00      
17 B2g 296 282 0.00      
18 B2u 3255 3100 0.70      
19 B2u 1480 1410 0.21      
20 B2u 1402 1335 5.27      
21 B2u 1114 1061 7.07      
22 B2u 220 210 0.83      
23 B3g 3242 3088 0.00      
24 B3g 1624 1547 0.00      
25 B3g 1297 1235 0.00      
26 B3g 630 600 0.00      
27 B3g 351 334 0.00      
28 B3u 813 774 48.85      
29 B3u 480 457 15.39      
30 B3u 102 97 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 17877.5 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 17028.3 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 MP2/cc-pVDZ
ABC
0.18650 0.02200 0.01968

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.396
C2 0.000 0.000 -1.396
C3 0.000 1.221 0.702
C4 0.000 -1.221 0.702
C5 0.000 -1.221 -0.702
C6 0.000 1.221 -0.702
Cl7 0.000 0.000 3.140
Cl8 0.000 0.000 -3.140
H9 0.000 2.164 1.255
H10 0.000 -2.164 1.255
H11 0.000 -2.164 -1.255
H12 0.000 2.164 -1.255

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.79191.40421.40422.42692.42691.74414.53592.16882.16883.42193.4219
C22.79192.42692.42691.40421.40424.53591.74413.42193.42192.16882.1688
C31.40422.42692.44112.81581.40342.72684.03091.09373.42963.90942.1720
C41.40422.42692.44111.40342.81582.72684.03093.42961.09372.17203.9094
C52.42691.40422.81581.40342.44114.03092.72683.90942.17201.09373.4296
C62.42691.40421.40342.81582.44114.03092.72682.17203.90943.42961.0937
Cl71.74414.53592.72682.72684.03094.03096.28002.87022.87024.89864.8986
Cl84.53591.74414.03094.03092.72682.72686.28004.89864.89862.87022.8702
H92.16883.42191.09373.42963.90942.17202.87024.89864.32835.00312.5093
H102.16883.42193.42961.09372.17203.90942.87024.89864.32832.50935.0031
H113.42192.16883.90942.17201.09373.42964.89862.87025.00312.50934.3283
H123.42192.16882.17203.90943.42961.09374.89862.87022.50935.00314.3283

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 119.631 C1 C3 H9 119.999
C1 C4 C5 119.631 C1 C4 H10 119.999
C2 C5 C4 119.631 C2 C5 H11 119.999
C2 C6 C3 119.631 C2 C6 H12 119.999
C3 C1 C4 120.739 C3 C1 Cl7 119.631
C3 C6 H12 120.370 C4 C1 Cl7 119.631
C4 C5 H11 120.370 C5 C2 C6 120.739
C5 C2 Cl8 119.631 C5 C4 H10 120.370
C6 C2 Cl8 119.631 C6 C3 H9 120.370
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability