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All results from a given calculation for B2H6 (Diborane)

using model chemistry: B3LYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B3LYP/6-31G**
 hartrees
Energy at 0K-53.294723
Energy at 298.15K-53.300605
HF Energy-53.294723
Nuclear repulsion energy32.064423
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 B3LYP/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 Ag 2642 2538 0.00 211.35 0.12 0.22
2 Ag 2196 2110 0.00 73.19 0.10 0.19
3 Ag 1211 1163 0.00 14.73 0.72 0.84
4 Ag 803 771 0.00 16.03 0.23 0.37
5 Au 850 816 0.00 0.00 0.00 0.00
6 B1g 2720 2613 0.00 102.40 0.75 0.86
7 B1g 944 907 0.00 2.14 0.75 0.86
8 B1u 2009 1930 19.72 0.00 0.00 0.00
9 B1u 998 959 21.36 0.00 0.00 0.00
10 B2g 1858 1785 0.00 5.53 0.75 0.86
11 B2g 890 855 0.00 3.73 0.75 0.86
12 B2u 2733 2626 173.42 0.00 0.00 0.00
13 B2u 963 925 0.56 0.00 0.00 0.00
14 B2u 358 344 14.29 0.00 0.00 0.00
15 B3g 1036 995 0.00 35.10 0.75 0.86
16 B3u 2629 2526 144.67 0.00 0.00 0.00
17 B3u 1720 1653 448.73 0.00 0.00 0.00
18 B3u 1205 1157 73.75 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13881.8 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 13337.6 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 B3LYP/6-31G**
ABC
2.68905 0.60799 0.55889

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.884 0.000 0.000
B2 -0.884 0.000 0.000
H3 0.000 0.000 0.975
H4 0.000 0.000 -0.975
H5 1.462 1.039 0.000
H6 1.462 -1.039 0.000
H7 -1.462 1.039 0.000
H8 -1.462 -1.039 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.76731.31591.31591.18921.18922.56552.5655
B21.76731.31591.31592.56552.56551.18921.1892
H31.31591.31591.95032.04162.04162.04162.0416
H41.31591.31591.95032.04162.04162.04162.0416
H51.18922.56552.04162.04162.07812.92413.5873
H61.18922.56552.04162.04162.07813.58732.9241
H72.56551.18922.04162.04162.92413.58732.0781
H82.56551.18922.04162.04163.58732.92412.0781

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.365 B1 H4 B2 84.365
H3 B1 H4 95.635 H3 B1 H5 109.062
H3 B1 H6 109.062 H3 B2 H4 95.635
H3 B2 H7 109.062 H3 B2 H8 109.062
H4 B1 H5 109.062 H4 B1 H6 109.062
H4 B2 H7 109.062 H4 B2 H8 109.062
H5 B1 H6 121.795 H7 B2 H8 121.795
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.016      
2 B 0.016      
3 H 0.044      
4 H 0.044      
5 H -0.030      
6 H -0.030      
7 H -0.030      
8 H -0.030      


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 -18.498 0.000 0.000
y 0.000 -17.459 0.000
z 0.000 0.000 -14.549
Traceless
 xyz
x -2.494 0.000 0.000
y 0.000 -0.936 0.000
z 0.000 0.000 3.430
Polar
3z2-r26.859
x2-y2-1.039
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.364 0.000 0.000
y 0.000 3.976 0.000
z 0.000 0.000 3.148


<r2> (average value of r2) Å2
<r2> 33.094
(<r2>)1/2 5.753