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All results from a given calculation for CHFClBr (fluorochlorobromomethane)

using model chemistry: QCISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-3155.284692
Energy at 298.15K-3155.289301
HF Energy-3154.780790
Nuclear repulsion energy317.575385
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 QCISD/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3169 3046 6.03      
2 A 1361 1308 15.89      
3 A 1287 1237 66.60      
4 A 1102 1059 99.57      
5 A 738 709 183.34      
6 A 664 638 35.53      
7 A 398 383 1.80      
8 A 297 286 0.65      
9 A 227 218 0.22      

Unscaled Zero Point Vibrational Energy (zpe) 4621.8 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 4442.0 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 QCISD/3-21G*
ABC
0.20375 0.06632 0.05172

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.571 0.467 0.429
Br2 -1.211 -0.186 -0.030
Cl3 1.829 -0.708 -0.070
F4 0.803 1.686 -0.205
H5 0.616 0.580 1.510

Atom - Atom Distances (Å)
  C1 Br2 Cl3 F4 H5
C11.95191.79301.39351.0877
Br21.95193.08462.75522.5085
Cl31.79303.08462.60862.3725
F41.39352.75522.60862.0491
H51.08772.50852.37252.0491

picture of fluorochlorobromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Cl3 110.840 Br2 C1 F4 109.766
Br2 C1 H5 107.823 Cl3 C1 F4 109.258
Cl3 C1 H5 108.391 F4 C1 H5 110.747
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability