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All results from a given calculation for B2H6 (Diborane)

using model chemistry: PBE1PBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at PBE1PBE/6-31G(2df,p)
 hartrees
Energy at 0K-53.197954
Energy at 298.15K-53.203786
HF Energy-53.197954
Nuclear repulsion energy32.103495
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 PBE1PBE/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 2635 2522 0.00 210.22 0.12 0.21
2 Ag 2197 2103 0.00 69.45 0.08 0.15
3 Ag 1192 1141 0.00 12.73 0.72 0.84
4 Ag 821 786 0.00 17.18 0.20 0.33
5 Au 847 811 0.00 0.00 0.00 0.00
6 B1g 2717 2600 0.00 101.91 0.75 0.86
7 B1g 929 889 0.00 1.87 0.75 0.86
8 B1u 2043 1955 7.21 0.00 0.00 0.00
9 B1u 985 942 22.94 0.00 0.00 0.00
10 B2g 1891 1810 0.00 3.79 0.75 0.86
11 B2g 896 857 0.00 1.13 0.75 0.86
12 B2u 2730 2613 137.67 0.00 0.00 0.00
13 B2u 914 875 0.01 0.00 0.00 0.00
14 B2u 324 310 18.04 0.00 0.00 0.00
15 B3g 998 955 0.00 19.40 0.75 0.86
16 B3u 2622 2509 139.32 0.00 0.00 0.00
17 B3u 1724 1650 394.21 0.00 0.00 0.00
18 B3u 1184 1133 61.35 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13824.6 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 13230.1 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 PBE1PBE/6-31G(2df,p)
ABC
2.66648 0.61428 0.56437

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G(2df,p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.877 0.000 0.000
B2 -0.877 0.000 0.000
H3 0.000 0.000 0.983
H4 0.000 0.000 -0.983
H5 1.456 1.042 0.000
H6 1.456 -1.042 0.000
H7 -1.456 1.042 0.000
H8 -1.456 -1.042 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.75461.31751.31751.19181.19182.55552.5555
B21.75461.31751.31752.55552.55551.19181.1918
H31.31751.31751.96602.04262.04262.04262.0426
H41.31751.31751.96602.04262.04262.04262.0426
H51.19182.55552.04262.04262.08342.91253.5810
H61.19182.55552.04262.04262.08343.58102.9125
H72.55551.19182.04262.04262.91253.58102.0834
H82.55551.19182.04262.04263.58102.91252.0834

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 83.495 B1 H4 B2 83.495
H3 B1 H4 96.505 H3 B1 H5 108.874
H3 B1 H6 108.874 H3 B2 H4 96.505
H3 B2 H7 108.874 H3 B2 H8 108.874
H4 B1 H5 108.874 H4 B1 H6 108.874
H4 B2 H7 108.874 H4 B2 H8 108.874
H5 B1 H6 121.868 H7 B2 H8 121.868
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.180      
2 B -0.180      
3 H 0.164      
4 H 0.164      
5 H 0.008      
6 H 0.008      
7 H 0.008      
8 H 0.008      


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 -18.486 0.000 0.000
y 0.000 -17.370 0.000
z 0.000 0.000 -14.451
Traceless
 xyz
x -2.575 0.000 0.000
y 0.000 -0.902 0.000
z 0.000 0.000 3.477
Polar
3z2-r26.954
x2-y2-1.115
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.454 0.000 0.000
y 0.000 4.176 0.000
z 0.000 0.000 3.398


<r2> (average value of r2) Å2
<r2> 32.926
(<r2>)1/2 5.738