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All results from a given calculation for B2O3 (diboron trioxide)

using model chemistry: HF/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
1 2 no D*H 1ΣG

Conformer 1 (C2V)

Jump to S1C2
Energy calculated at HF/3-21G
 hartrees
Energy at 0K-272.623397
Energy at 298.15K 
HF Energy-272.623397
Nuclear repulsion energy116.757230
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/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 2256 2043 0.00 26.27 0.07 0.13
2 Σg 705 638 0.00 6.28 0.14 0.25
3 Σu 2302 2085 1630.73 0.00 0.00 0.00
4 Σu 1384 1254 56.55 0.00 0.00 0.00
5 Πg 479 434 0.00 3.80 0.75 0.86
5 Πg 479 434 0.00 3.80 0.75 0.86
6 Πu 551 499 230.92 0.00 0.00 0.00
6 Πu 551 499 230.92 0.00 0.00 0.00
7 Πu 90 82 10.85 0.00 0.00 0.00
7 Πu 90 82 10.85 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 4443.1 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 4023.7 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/3-21G
B
0.06964

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.000
B2 0.000 0.000 -1.315
B3 0.000 0.000 1.315
O4 0.000 0.000 -2.525
O5 0.000 0.000 2.525

Atom - Atom Distances (Å)
  O1 B2 B3 O4 O5
O11.31531.31532.52522.5252
B21.31532.63071.20993.8405
B31.31532.63073.84051.2099
O42.52521.20993.84055.0504
O52.52523.84051.20995.0504

picture of diboron trioxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 B2 O4 180.000 O1 B3 O5 180.000
B2 O1 B3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.803      
2 B 0.891      
3 B 0.891      
4 O -0.490      
5 O -0.490      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.774 0.000 0.000
y 0.000 -23.774 0.000
z 0.000 0.000 -48.888
Traceless
 xyz
x 12.557 0.000 0.000
y 0.000 12.557 0.000
z 0.000 0.000 -25.114
Polar
3z2-r2-50.229
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 1.677 0.000 0.000
y 0.000 1.677 0.000
z 0.000 0.000 5.452


<r2> (average value of r2) Å2
<r2> 139.405
(<r2>)1/2 11.807

Conformer 2 (D*H)

Jump to S1C1
Energy calculated at HF/3-21G
 hartrees
Energy at 0K-272.623397
Energy at 298.15K 
HF Energy-272.623397
Nuclear repulsion energy116.756852
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/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 2256 2043 0.00 26.27 0.07 0.13
2 Σg 705 638 0.00 6.28 0.14 0.25
3 Σu 2302 2085 1630.71 0.00 0.00 0.00
4 Σu 1384 1254 56.56 0.00 0.00 0.00
5 Πg 479 434 0.00 3.80 0.75 0.86
5 Πg 479 434 0.00 3.80 0.75 0.86
6 Πu 551 499 230.92 0.00 0.00 0.00
6 Πu 551 499 230.92 0.00 0.00 0.00
7 Πu 90 82 10.85 0.00 0.00 0.00
7 Πu 90 82 10.85 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 4443.1 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 4023.7 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/3-21G
B
0.06964

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.000
B2 0.000 0.000 1.315
B3 0.000 0.000 -1.315
O4 0.000 0.000 2.525
O5 0.000 0.000 -2.525

Atom - Atom Distances (Å)
  O1 B2 B3 O4 O5
O11.31531.31532.52522.5252
B21.31532.63071.20993.8406
B31.31532.63073.84061.2099
O42.52521.20993.84065.0504
O52.52523.84061.20995.0504

picture of diboron trioxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 B2 O4 180.000 O1 B3 O5 180.000
B2 O1 B3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.803      
2 B 0.891      
3 B 0.891      
4 O -0.490      
5 O -0.490      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.774 0.000 0.000
y 0.000 -23.774 0.000
z 0.000 0.000 -48.888
Traceless
 xyz
x 12.557 0.000 0.000
y 0.000 12.557 0.000
z 0.000 0.000 -25.114
Polar
3z2-r2-50.229
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 1.677 0.000 0.000
y 0.000 1.677 0.000
z 0.000 0.000 5.452


<r2> (average value of r2) Å2
<r2> 139.406
(<r2>)1/2 11.807