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/6-31G*

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/6-31G*
 hartrees
Energy at 0K-1150.860390
Energy at 298.15K-1150.864504
HF Energy-1150.520346
Nuclear repulsion energy448.014272
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/6-31G*
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 3257 3091 0.00      
2 Ag 1647 1563 0.00      
3 Ag 1219 1157 0.00      
4 Ag 1124 1067 0.00      
5 Ag 764 725 0.00      
6 Ag 332 315 0.00      
7 Au 941 893 0.00      
8 Au 418 397 0.00      
9 B1g 826 784 0.00      
10 B1u 3242 3078 1.56      
11 B1u 1533 1455 100.80      
12 B1u 1125 1068 100.60      
13 B1u 1032 979 59.92      
14 B1u 553 525 32.76      
15 B2g 921 874 0.00      
16 B2g 650 617 0.00      
17 B2g 297 282 0.00      
18 B2u 3255 3090 2.46      
19 B2u 1445 1372 6.14      
20 B2u 1355 1287 0.00      
21 B2u 1143 1085 4.31      
22 B2u 223 211 1.15      
23 B3g 3244 3079 0.00      
24 B3g 1638 1554 0.00      
25 B3g 1335 1267 0.00      
26 B3g 643 610 0.00      
27 B3g 359 340 0.00      
28 B3u 818 777 55.90      
29 B3u 489 465 12.24      
30 B3u 103 98 0.69      

Unscaled Zero Point Vibrational Energy (zpe) 17964.7 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 17052.1 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/6-31G*
ABC
0.18883 0.02212 0.01980

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.384
C2 0.000 0.000 -1.384
C3 0.000 1.213 0.697
C4 0.000 -1.213 0.697
C5 0.000 -1.213 -0.697
C6 0.000 1.213 -0.697
Cl7 0.000 0.000 3.133
Cl8 0.000 0.000 -3.133
H9 0.000 2.149 1.245
H10 0.000 -2.149 1.245
H11 0.000 -2.149 -1.245
H12 0.000 2.149 -1.245

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 Cl7 Cl8 H9 H10 H11 H12
C12.76791.39421.39422.40902.40901.74904.51692.15312.15313.39493.3949
C22.76792.40902.40901.39421.39424.51691.74903.39493.39492.15312.1531
C31.39422.40902.42662.79871.39432.72134.01771.08373.40623.88232.1552
C41.39422.40902.42661.39432.79872.72134.01773.40621.08372.15523.8823
C52.40901.39422.79871.39432.42664.01772.72133.88232.15521.08373.4062
C62.40901.39421.39432.79872.42664.01772.72132.15523.88233.40621.0837
Cl71.74904.51692.72132.72134.01774.01776.26592.86052.86054.87644.8764
Cl84.51691.74904.01774.01772.72132.72136.26594.87644.87642.86052.8605
H92.15313.39491.08373.40623.88232.15522.86054.87644.29724.96602.4891
H102.15313.39493.40621.08372.15523.88232.86054.87644.29722.48914.9660
H113.39492.15313.88232.15521.08373.40624.87642.86054.96602.48914.2972
H123.39492.15312.15523.88233.40621.08374.87642.86052.48914.96604.2972

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 119.511 C1 C3 H9 120.149
C1 C4 C5 119.511 C1 C4 H10 120.149
C2 C5 C4 119.511 C2 C5 H11 120.149
C2 C6 C3 119.511 C2 C6 H12 120.149
C3 C1 C4 120.977 C3 C1 Cl7 119.511
C3 C6 H12 120.340 C4 C1 Cl7 119.511
C4 C5 H11 120.340 C5 C2 C6 120.977
C5 C2 Cl8 119.511 C5 C4 H10 120.340
C6 C2 Cl8 119.511 C6 C3 H9 120.340
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.084      
2 C -0.084      
3 C -0.140      
4 C -0.140      
5 C -0.140      
6 C -0.140      
7 Cl -0.005      
8 Cl -0.005      
9 H 0.184      
10 H 0.184      
11 H 0.184      
12 H 0.184      


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 -62.092 0.000 0.000
y 0.000 -52.367 0.000
z 0.000 0.000 -65.870
Traceless
 xyz
x -2.973 0.000 0.000
y 0.000 11.614 0.000
z 0.000 0.000 -8.641
Polar
3z2-r2-17.282
x2-y2-9.725
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.472 0.000 0.000
y 0.000 11.363 0.000
z 0.000 0.000 18.466


<r2> (average value of r2) Å2
<r2> 465.907
(<r2>)1/2 21.585