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 CaH2 (Calcium Hydride)

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no D*H 1Σg
1 2 yes C2V 1A1

Conformer 1 (D*H)

Jump to S1C2
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-678.802706
Energy at 298.15K 
HF Energy-678.802706
Nuclear repulsion energy10.468613
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 B1B95/6-311G**
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 1334 1281 0.00      
2 Σu 1247 1197 937.28      
3 Πu 94i 91i 810.08      
3 Πu 94i 91i 810.08      

Unscaled Zero Point Vibrational Energy (zpe) 1196.2 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 1148.5 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 B1B95/6-311G**
B
1.99548

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

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 2.047
H3 0.000 0.000 -2.047

Atom - Atom Distances (Å)
  Ca1 H2 H3
Ca12.04722.0472
H22.04724.0945
H32.04724.0945

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 B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ca 0.802      
2 H -0.401      
3 H -0.401      


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 -16.426 0.000 0.000
y 0.000 -16.426 0.000
z 0.000 0.000 -42.480
Traceless
 xyz
x 13.027 0.000 0.000
y 0.000 13.027 0.000
z 0.000 0.000 -26.055
Polar
3z2-r2-52.109
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 4.112 0.000 0.000
y 0.000 4.112 0.000
z 0.000 0.000 7.287


<r2> (average value of r2) Å2
<r2> 24.066
(<r2>)1/2 4.906

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-678.802900
Energy at 298.15K-678.803835
HF Energy-678.802900
Nuclear repulsion energy10.538464
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 B1B95/6-311G**
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 1337 1283 20.63      
2 A1 154 148 755.53      
3 B2 1259 1209 933.33      

Unscaled Zero Point Vibrational Energy (zpe) 1374.9 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 1320.0 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 B1B95/6-311G**
ABC
34.23274 2.15414 2.02661

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ca1 0.000 0.000 0.046
H2 0.000 1.970 -0.461
H3 0.000 -1.970 -0.461

Atom - Atom Distances (Å)
  Ca1 H2 H3
Ca12.03452.0345
H22.03453.9408
H32.03453.9408

picture of Calcium Hydride state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Ca1 H3 151.163
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ca 0.861      
2 H -0.430      
3 H -0.430      


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 3.103 3.103
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.234 0.000 0.000
y 0.000 -40.624 0.000
z 0.000 0.000 -17.334
Traceless
 xyz
x 12.745 0.000 0.000
y 0.000 -23.840 0.000
z 0.000 0.000 11.095
Polar
3z2-r222.189
x2-y224.390
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.275 0.000 0.000
y 0.000 7.281 0.000
z 0.000 0.000 5.195


<r2> (average value of r2) Å2
<r2> 23.678
(<r2>)1/2 4.866