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 CaC (Calcium monocarbide)

using model chemistry: B2PLYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 3Σ
Energy calculated at B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-715.248751
Energy at 298.15K-715.247759
HF Energy-715.192775
Nuclear repulsion energy27.642666
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/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 Σ 483 464 35.12      

Unscaled Zero Point Vibrational Energy (zpe) 241.7 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 231.9 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/cc-pVTZ
B
0.34614

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ca1 0.000 0.000 0.530
C2 0.000 0.000 -1.767

Atom - Atom Distances (Å)
  Ca1 C2
Ca12.2972
C22.2972

picture of Calcium monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ca 0.467      
2 C -0.467      


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 5.191 5.191
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.391 0.000 0.000
y 0.000 -24.391 0.000
z 0.000 0.000 -35.942
Traceless
 xyz
x 5.775 0.000 0.000
y 0.000 5.775 0.000
z 0.000 0.000 -11.551
Polar
3z2-r2-23.102
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 13.836 0.000 0.000
y 0.000 13.836 0.000
z 0.000 0.000 22.628


<r2> (average value of r2) Å2
<r2> 41.995
(<r2>)1/2 6.480