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

using model chemistry: HF/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at HF/SDD
 hartrees
Energy at 0K-1148.367999
Energy at 298.15K-1148.372548
HF Energy-1148.367999
Nuclear repulsion energy444.521048
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 HF/SDD
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 3439 3096 0.00      
2 Ag 1771 1595 0.00      
3 Ag 1316 1185 0.00      
4 Ag 1172 1056 0.00      
5 Ag 786 708 0.00      
6 Ag 341 307 0.00      
7 Au 1123 1011 0.00      
8 Au 469 422 0.00      
9 B1g 960 865 0.00      
10 B1u 3420 3080 1.07      
11 B1u 1641 1477 111.63      
12 B1u 1190 1072 84.21      
13 B1u 1111 1000 104.85      
14 B1u 544 490 38.60      
15 B2g 1105 995 0.00      
16 B2g 793 714 0.00      
17 B2g 319 287 0.00      
18 B2u 3437 3095 5.72      
19 B2u 1534 1381 7.37      
20 B2u 1313 1182 6.19      
21 B2u 1215 1094 2.21      
22 B2u 224 201 2.68      
23 B3g 3421 3081 0.00      
24 B3g 1766 1590 0.00      
25 B3g 1453 1309 0.00      
26 B3g 698 628 0.00      
27 B3g 368 331 0.00      
28 B3u 955 860 97.22      
29 B3u 549 495 37.72      
30 B3u 110 99 1.22      

Unscaled Zero Point Vibrational Energy (zpe) 19270.0 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 17350.7 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 HF/SDD
ABC
0.18954 0.02159 0.01939

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.373
C2 0.000 0.000 -1.373
C3 0.000 1.212 0.697
C4 0.000 -1.212 0.697
C5 0.000 -1.212 -0.697
C6 0.000 1.212 -0.697
Cl7 0.000 0.000 3.177
Cl8 0.000 0.000 -3.177
H9 0.000 2.137 1.235
H10 0.000 -2.137 1.235
H11 0.000 -2.137 -1.235
H12 0.000 2.137 -1.235

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.74631.38771.38772.39932.39931.80384.55012.14172.14173.37233.3723
C22.74632.39932.39931.38771.38774.55011.80383.37233.37232.14172.1417
C31.38772.39932.42432.79691.39492.75994.05961.07023.39233.86712.1429
C41.38772.39932.42431.39492.79692.75994.05963.39231.07022.14293.8671
C52.39931.38772.79691.39492.42434.05962.75993.86712.14291.07023.3923
C62.39931.38771.39492.79692.42434.05962.75992.14293.86713.39231.0702
Cl71.80384.55012.75992.75994.05964.05966.35392.88752.88754.90284.9028
Cl84.55011.80384.05964.05962.75992.75996.35394.90284.90282.88752.8875
H92.14173.37231.07023.39233.86712.14292.88754.90284.27464.93732.4709
H102.14173.37233.39231.07022.14293.86712.88754.90284.27462.47094.9373
H113.37232.14173.86712.14291.07023.39234.90282.88754.93732.47094.2746
H123.37232.14172.14293.86713.39231.07024.90282.88752.47094.93734.2746

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 119.136 C1 C3 H9 120.686
C1 C4 C5 119.136 C1 C4 H10 120.686
C2 C5 C4 119.136 C2 C5 H11 120.686
C2 C6 C3 119.136 C2 C6 H12 120.686
C3 C1 C4 121.728 C3 C1 Cl7 119.136
C3 C6 H12 120.178 C4 C1 Cl7 119.136
C4 C5 H11 120.178 C5 C2 C6 121.728
C5 C2 Cl8 119.136 C5 C4 H10 120.178
C6 C2 Cl8 119.136 C6 C3 H9 120.178
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.071      
2 C -0.071      
3 C -0.168      
4 C -0.168      
5 C -0.168      
6 C -0.168      
7 Cl -0.098      
8 Cl -0.098      
9 H 0.253      
10 H 0.253      
11 H 0.253      
12 H 0.253      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -64.484 0.000 0.000
y 0.000 -52.366 0.000
z 0.000 0.000 -73.314
Traceless
 xyz
x -1.644 0.000 0.000
y 0.000 16.533 0.000
z 0.000 0.000 -14.889
Polar
3z2-r2-29.778
x2-y2-12.118
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.245 0.000 0.000
y 0.000 10.422 0.000
z 0.000 0.000 17.283


<r2> (average value of r2) Å2
<r2> 476.699
(<r2>)1/2 21.833