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

using model chemistry: PBEPBE/3-21G

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 PBEPBE/3-21G
 hartrees
Energy at 0K-675.096582
Energy at 298.15K-675.097730
HF Energy-675.096582
Nuclear repulsion energy9.894598
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 PBEPBE/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 Σg 1198 1187 0.00      
2 Σu 1196 1185 195.79      
3 Πu 304 301 497.10      
3 Πu 304 301 497.10      

Unscaled Zero Point Vibrational Energy (zpe) 1500.7 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 1487.1 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 PBEPBE/3-21G
B
1.78265

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

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 2.166
H3 0.000 0.000 -2.166

Atom - Atom Distances (Å)
  Ca1 H2 H3
Ca12.16602.1660
H22.16604.3320
H32.16604.3320

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
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ca 0.453      
2 H -0.226      
3 H -0.226      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.710 0.000 0.000
y 0.000 -18.710 0.000
z 0.000 0.000 -42.288
Traceless
 xyz
x 11.789 0.000 0.000
y 0.000 11.789 0.000
z 0.000 0.000 -23.578
Polar
3z2-r2-47.156
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.677 0.000 0.000
y 0.000 6.677 0.000
z 0.000 0.000 7.582


<r2> (average value of r2) Å2
<r2> 25.978
(<r2>)1/2 5.097