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

using model chemistry: PBEPBE/STO-3G

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 PBEPBE/STO-3G
 hartrees
Energy at 0K-61.744110
Energy at 298.15K-61.741639
HF Energy-61.744110
Nuclear repulsion energy10.537718
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 PBEPBE/STO-3G
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 1272 1162 3.94      

Unscaled Zero Point Vibrational Energy (zpe) 635.8 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 580.9 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 PBEPBE/STO-3G
B
1.29362

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 -0.822
C2 0.000 0.000 0.685

Atom - Atom Distances (Å)
  B1 C2
B11.5065
C21.5065

picture of boron monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.086      
2 C -0.086      


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 -0.898 0.898
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -9.292 0.000 0.000
y 0.000 -9.292 0.000
z 0.000 0.000 -11.573
Traceless
 xyz
x 1.140 0.000 0.000
y 0.000 1.140 0.000
z 0.000 0.000 -2.281
Polar
3z2-r2-4.561
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 1.142 0.000 0.000
y 0.000 1.142 0.000
z 0.000 0.000 3.484


<r2> (average value of r2) Å2
<r2> 12.469
(<r2>)1/2 3.531

State 2 (2Π)

Jump to S1C1
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-61.720536
Energy at 298.15K-61.718085
Nuclear repulsion energy11.306078
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 PBEPBE/STO-3G
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 1572 1436 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 786.0 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 718.1 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 PBEPBE/STO-3G
B
1.48915

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 -0.766
C2 0.000 0.000 0.638

Atom - Atom Distances (Å)
  B1 C2
B11.4041
C21.4041

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