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: ROHF/TZVP

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 ROHF/TZVP
 hartrees
Energy at 0K-714.433337
Energy at 298.15K-714.431720
HF Energy-714.433337
Nuclear repulsion energy16.926201
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 ROHF/TZVP
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 23 23 6.46      

Unscaled Zero Point Vibrational Energy (zpe) 11.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11.6 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 ROHF/TZVP
B
0.12978

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ca1 0.000 0.000 0.866
C2 0.000 0.000 -2.886

Atom - Atom Distances (Å)
  Ca1 C2
Ca13.7517
C23.7517

picture of Calcium monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Ca 0.067      
2 C -0.067      


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 1.150 1.150
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.337 0.000 0.000
y 0.000 -31.337 0.000
z 0.000 0.000 -30.704
Traceless
 xyz
x -0.317 0.000 0.000
y 0.000 -0.317 0.000
z 0.000 0.000 0.633
Polar
3z2-r21.266
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 84.401
(<r2>)1/2 9.187