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All results from a given calculation for B2H6 (Diborane)

using model chemistry: BLYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at BLYP/6-31+G**
 hartrees
Energy at 0K-53.229861
Energy at 298.15K-53.235679
HF Energy-53.229861
Nuclear repulsion energy31.862041
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 BLYP/6-31+G**
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 2576 2562 0.00 274.18 0.11 0.20
2 Ag 2142 2130 0.00 80.65 0.08 0.15
3 Ag 1175 1168 0.00 11.27 0.69 0.82
4 Ag 773 769 0.00 17.27 0.22 0.36
5 Au 827 823 0.00 0.00 0.00 0.00
6 B1g 2648 2634 0.00 133.16 0.75 0.86
7 B1g 921 916 0.00 1.69 0.75 0.86
8 B1u 1957 1947 12.13 0.00 0.00 0.00
9 B1u 972 967 16.67 0.00 0.00 0.00
10 B2g 1802 1792 0.00 4.76 0.75 0.86
11 B2g 867 862 0.00 3.08 0.75 0.86
12 B2u 2662 2648 206.32 0.00 0.00 0.00
13 B2u 929 924 0.61 0.00 0.00 0.00
14 B2u 349 347 13.25 0.00 0.00 0.00
15 B3g 992 986 0.00 18.98 0.75 0.86
16 B3u 2563 2549 159.11 0.00 0.00 0.00
17 B3u 1666 1657 434.62 0.00 0.00 0.00
18 B3u 1169 1163 79.25 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13494.1 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 13422.5 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 BLYP/6-31+G**
ABC
2.65944 0.59958 0.55115

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.890 0.000 0.000
B2 -0.890 0.000 0.000
H3 0.000 0.000 0.980
H4 0.000 0.000 -0.980
H5 1.472 1.045 0.000
H6 1.472 -1.045 0.000
H7 -1.472 1.045 0.000
H8 -1.472 -1.045 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.78051.32361.32361.19611.19612.58292.5829
B21.78051.32361.32362.58292.58291.19611.1961
H31.32361.32361.95912.05382.05382.05382.0538
H41.32361.32361.95912.05382.05382.05382.0538
H51.19612.58292.05382.05382.09062.94343.6103
H61.19612.58292.05382.05382.09063.61032.9434
H72.58291.19612.05382.05382.94343.61032.0906
H82.58291.19612.05382.05383.61032.94342.0906

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.530 B1 H4 B2 84.530
H3 B1 H4 95.470 H3 B1 H5 109.084
H3 B1 H6 109.084 H3 B2 H4 95.470
H3 B2 H7 109.084 H3 B2 H8 109.084
H4 B1 H5 109.084 H4 B1 H6 109.084
H4 B2 H7 109.084 H4 B2 H8 109.084
H5 B1 H6 121.827 H7 B2 H8 121.827
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.065      
2 B -0.065      
3 H 0.054      
4 H 0.054      
5 H 0.005      
6 H 0.005      
7 H 0.005      
8 H 0.005      


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 -19.168 0.000 0.000
y 0.000 -18.180 0.000
z 0.000 0.000 -15.060
Traceless
 xyz
x -2.548 0.000 0.000
y 0.000 -1.066 0.000
z 0.000 0.000 3.614
Polar
3z2-r27.228
x2-y2-0.988
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.970 0.000 0.000
y 0.000 4.585 0.000
z 0.000 0.000 3.499


<r2> (average value of r2) Å2
<r2> 33.789
(<r2>)1/2 5.813