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/6-31G**

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/6-31G**
 hartrees
Energy at 0K-62.317568
Energy at 298.15K-62.315119
HF Energy-62.317568
Nuclear repulsion energy11.072241
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/6-31G**
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 1457 1315 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 728.3 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 657.3 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/6-31G**
B
1.42819

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 -0.782
C2 0.000 0.000 0.652

Atom - Atom Distances (Å)
  B1 C2
B11.4338
C21.4338

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/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.138      
2 C -0.138      


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 -2.331 2.331
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.212 0.000 0.000
y 0.000 -11.212 0.000
z 0.000 0.000 -14.046
Traceless
 xyz
x 1.417 0.000 0.000
y 0.000 1.417 0.000
z 0.000 0.000 -2.834
Polar
3z2-r2-5.668
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 2.331 0.000 0.000
y 0.000 2.331 0.000
z 0.000 0.000 4.572


<r2> (average value of r2) Å2
<r2> 13.199
(<r2>)1/2 3.633

State 2 (2Π)

Jump to S1C1
Energy calculated at HF/6-31G**
 hartrees
Energy at 0K-62.210969
Energy at 298.15K-62.208463
Nuclear repulsion energy11.024525
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/6-31G**
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 933 843 75.22      

Unscaled Zero Point Vibrational Energy (zpe) 466.7 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 421.2 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/6-31G**
B
1.41590

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 -0.785
C2 0.000 0.000 0.655

Atom - Atom Distances (Å)
  B1 C2
B11.4400
C21.4400

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