Sorry, I lost your molecule, please back up and select it again.
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 (methyl bromide)

using model chemistry: B2PLYP=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B2PLYP=FULL/cc-pVTZ
 hartrees
Energy at 0K-2613.707335
Energy at 298.15K 
HF Energy-2613.556198
Nuclear repulsion energy89.072580
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=FULL/cc-pVTZ
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 3109 2972 17.29 132.86 0.00 0.00
2 A1 1347 1287 21.21 0.04 0.07 0.13
3 A1 618 591 11.21 20.51 0.23 0.38
4 E 3211 3069 2.02 54.87 0.75 0.86
4 E 3211 3069 2.02 54.87 0.75 0.86
5 E 1494 1428 5.51 6.32 0.75 0.86
5 E 1494 1428 5.51 6.32 0.75 0.86
6 E 974 931 4.51 2.00 0.75 0.86
6 E 974 931 4.51 2.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8216.1 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 7852.9 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 B2PLYP=FULL/cc-pVTZ
ABC
5.26321 0.31839 0.31839

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.525
Br2 0.000 0.000 0.420
H3 0.000 1.029 -1.856
H4 0.891 -0.515 -1.856
H5 -0.891 -0.515 -1.856

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.94511.08131.08131.0813
Br21.94512.49832.49832.4983
H31.08132.49831.78271.7827
H41.08132.49831.78271.7827
H51.08132.49831.78271.7827

picture of methyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 107.844 Br2 C1 H4 107.844
Br2 C1 H5 107.844 H3 C1 H4 111.048
H3 C1 H5 111.048 H4 C1 H5 111.048
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability