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All results from a given calculation for BC (boron monocarbide)

using model chemistry: B3PW91/3-21G

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 B3PW91/3-21G
 hartrees
Energy at 0K-62.282800
Energy at 298.15K-62.280326
HF Energy-62.282800
Nuclear repulsion energy10.481725
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 B3PW91/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 1125 1081 30.62      

Unscaled Zero Point Vibrational Energy (zpe) 562.5 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 540.6 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 B3PW91/3-21G
B
1.27991

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 -0.826
C2 0.000 0.000 0.688

Atom - Atom Distances (Å)
  B1 C2
B11.5146
C21.5146

picture of boron monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.289      
2 C -0.289      


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 -1.034 1.034
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.698 0.000 0.000
y 0.000 -11.698 0.000
z 0.000 0.000 -14.643
Traceless
 xyz
x 1.472 0.000 0.000
y 0.000 1.472 0.000
z 0.000 0.000 -2.945
Polar
3z2-r2-5.889
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 2.266 0.000 0.000
y 0.000 2.266 0.000
z 0.000 0.000 7.040


<r2> (average value of r2) Å2
<r2> 14.176
(<r2>)1/2 3.765

State 2 (2Π)

Jump to S1C1
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-62.242631
Energy at 298.15K-62.240177
Nuclear repulsion energy11.071943
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 B3PW91/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 1363 1310 0.87      

Unscaled Zero Point Vibrational Energy (zpe) 681.3 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 654.9 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 B3PW91/3-21G
B
1.42811

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

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 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability