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All results from a given calculation for CaH2 (Calcium Hydride)

using model chemistry: MP2/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-677.863106
Energy at 298.15K-677.864171
HF Energy-677.814003
Nuclear repulsion energy10.176978
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 MP2/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 1339 1260 0.00      
2 Σu 1334 1254 490.04      
3 Πu 263 247 845.08      
3 Πu 263 247 845.08      

Unscaled Zero Point Vibrational Energy (zpe) 1599.1 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 1504.2 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 MP2/6-31+G**
B
1.88585

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31+G**

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ca1 0.000 0.000 0.000
H2 0.000 0.000 2.106
H3 0.000 0.000 -2.106

Atom - Atom Distances (Å)
  Ca1 H2 H3
Ca12.10592.1059
H22.10594.2118
H32.10594.2118

picture of Calcium Hydride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Ca1 H3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability