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All results from a given calculation for CH2I2 (Diiodomethane)

using model chemistry: wB97X-D/cc-pVTZ-PP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/cc-pVTZ-PP
 hartrees
Energy at 0K-630.884738
Energy at 298.15K 
HF Energy-630.884738
Nuclear repulsion energy192.174443
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 wB97X-D/cc-pVTZ-PP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3151 3151 0.07 83.18 0.06 0.11
2 A1 1429 1429 0.01 17.89 0.48 0.65
3 A1 509 509 0.12 21.47 0.08 0.15
4 A1 120 120 0.02 4.56 0.34 0.51
5 A2 1075 1075 0.00 1.21 0.75 0.86
6 B1 3236 3236 4.13 41.86 0.75 0.86
7 B1 732 732 7.45 0.72 0.75 0.86
8 B2 1161 1161 94.11 1.74 0.75 0.86
9 B2 625 625 34.43 8.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6019.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6019.5 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 wB97X-D/cc-pVTZ-PP
ABC
0.75821 0.02039 0.01993

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVTZ-PP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.048
I2 0.000 1.803 -0.091
I3 0.000 -1.803 -0.091
H4 -0.893 0.000 1.659
H5 0.893 0.000 1.659

Atom - Atom Distances (Å)
  C1 I2 I3 H4 H5
C12.13262.13261.08151.0815
I22.13263.60612.66602.6660
I32.13263.60612.66602.6660
H41.08152.66602.66601.7857
H51.08152.66602.66601.7857

picture of Diiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 C1 I3 115.446 I2 C1 H4 107.540
I2 C1 H5 107.540 I3 C1 H4 107.540
I3 C1 H5 107.540 H4 C1 H5 111.287
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVTZ-PP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.314      
2 I 0.013      
3 I 0.013      
4 H 0.144      
5 H 0.144      


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 1.172 1.172
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -61.225 0.000 0.000
y 0.000 -60.540 0.000
z 0.000 0.000 -58.244
Traceless
 xyz
x -1.833 0.000 0.000
y 0.000 -0.805 0.000
z 0.000 0.000 2.638
Polar
3z2-r25.277
x2-y2-0.685
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.024 0.000 0.000
y 0.000 15.103 0.000
z 0.000 0.000 8.889


<r2> (average value of r2) Å2
<r2> 214.124
(<r2>)1/2 14.633