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All results from a given calculation for C2Cl2 (dichloroacetylene)

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 C2H 1Σg
Energy calculated at MP2/cc-pVDZ
 hartrees
Energy at 0K-995.164751
Energy at 298.15K-995.163210
HF Energy-994.639412
Nuclear repulsion energy151.979041
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 Σg 2255 2148 0.00      
2 Σg 482 459 0.00      
3 Σu 1020 972 56.76      
4 Πg 280 267 0.00      
4 Πg 280 267 0.00      
5 Πu 178 169 1.43      
5 Πu 178 169 1.43      

Unscaled Zero Point Vibrational Energy (zpe) 2336.5 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 2225.6 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
B
0.04572

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.614
C2 0.000 0.000 -0.614
Cl3 0.000 0.000 2.268
Cl4 0.000 0.000 -2.268

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4
C11.22821.65352.8817
C21.22822.88171.6535
Cl31.65352.88174.5352
Cl42.88171.65354.5352

picture of dichloroacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl4 180.000 C2 C1 Cl3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.012      
2 C 0.012      
3 Cl -0.012      
4 Cl -0.012      


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 -36.324 0.000 0.000
y 0.000 -36.324 0.000
z 0.000 0.000 -30.964
Traceless
 xyz
x -2.680 0.000 0.000
y 0.000 -2.680 0.000
z 0.000 0.000 5.360
Polar
3z2-r210.721
x2-y20.000
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000