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All results from a given calculation for CF2I2 (difluorodiiodomethane)

using model chemistry: MP2/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-75.849203
Energy at 298.15K 
HF Energy-75.508534
Nuclear repulsion energy87.126446
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/CEP-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 A1 940 908 242.63 6.71 0.75 0.86
2 A1 515 498 6.31 3.05 0.16 0.27
3 A1 259 250 0.15 11.82 0.23 0.37
4 A1 117 113 0.30 8.01 0.62 0.76
5 A2 239 231 0.00 3.34 0.75 0.86
6 B1 734 709 300.57 4.91 0.75 0.86
7 B1 266 257 2.19 5.72 0.75 0.86
8 B2 951 919 160.28 1.13 0.75 0.86
9 B2 295 285 0.07 5.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 2157.6 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 2084.9 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/CEP-31G
ABC
0.08698 0.01800 0.01635

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.812
F2 0.000 1.144 1.689
F3 0.000 -1.144 1.689
I4 1.869 0.000 -0.333
I5 -1.869 0.000 -0.333

Atom - Atom Distances (Å)
  C1 F2 F3 I4 I5
C11.44161.44162.19212.1921
F21.44162.28772.98202.9820
F31.44162.28772.98202.9820
I42.19212.98202.98203.7389
I52.19212.98202.98203.7389

picture of difluorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 F3 105.019 F2 C1 I4 108.532
F2 C1 I5 108.532 F3 C1 I4 108.532
F3 C1 I5 108.532 I4 C1 I5 117.040
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability