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 CaH (Calcium monohydride)

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 2Σ
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-673.958485
Energy at 298.15K-673.958946
HF Energy-673.939870
Nuclear repulsion energy4.801681
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 MP4/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 1146 1111        

Unscaled Zero Point Vibrational Energy (zpe) 573.0 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 555.7 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 MP4/3-21G
B
3.53024

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ca1 0.000 0.000 0.105
H2 0.000 0.000 -2.099

Atom - Atom Distances (Å)
  Ca1 H2
Ca12.2040
H22.2040

picture of Calcium monohydride state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability