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 BC (boron monocarbide)

using model chemistry: HF/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 4Σ-
2 1 yes C*V 2Π

State 1 (4Σ-)

Jump to S2C1
Energy calculated at HF/LANL2DZ
 hartrees
Energy at 0K-62.301567
Energy at 298.15K-62.299112
HF Energy-62.301567
Nuclear repulsion energy10.836627
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 HF/LANL2DZ
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 1360 1224 2.16      

Unscaled Zero Point Vibrational Energy (zpe) 679.8 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 611.8 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 HF/LANL2DZ
B
1.36805

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 -0.799
C2 0.000 0.000 0.666

Atom - Atom Distances (Å)
  B1 C2
B11.4650
C21.4650

picture of boron monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.082      
2 C -0.082      


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 -2.533 2.533
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.842 0.000 0.000
y 0.000 -11.842 0.000
z 0.000 0.000 -15.168
Traceless
 xyz
x 1.663 0.000 0.000
y 0.000 1.663 0.000
z 0.000 0.000 -3.326
Polar
3z2-r2-6.652
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 2.831 0.000 0.000
y 0.000 2.831 0.000
z 0.000 0.000 5.382


<r2> (average value of r2) Å2
<r2> 13.942
(<r2>)1/2 3.734

State 2 (2Π)

Jump to S1C1
Energy calculated at HF/LANL2DZ
 hartrees
Energy at 0K-62.301499
Energy at 298.15K-62.299040
Nuclear repulsion energy11.008852
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 HF/LANL2DZ
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 1286 1157 14.01      

Unscaled Zero Point Vibrational Energy (zpe) 643.0 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 578.7 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 HF/LANL2DZ
B
1.41188

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 -0.787
C2 0.000 0.000 0.655

Atom - Atom Distances (Å)
  B1 C2
B11.4421
C21.4421

picture of boron monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability