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All results from a given calculation for B2H6 (Diborane)

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-53.268637
Energy at 298.15K-53.274471
HF Energy-53.268637
Nuclear repulsion energy32.109216
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 mPW1PW91/6-311G*
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 2616 2497 0.00 243.02 0.13 0.22
2 Ag 2177 2078 0.00 77.39 0.07 0.13
3 Ag 1189 1134 0.00 10.01 0.70 0.83
4 Ag 812 775 0.00 17.49 0.18 0.31
5 Au 852 813 0.00 0.00 0.00 0.00
6 B1g 2695 2572 0.00 111.17 0.75 0.86
7 B1g 933 890 0.00 0.93 0.75 0.86
8 B1u 2030 1937 5.78 0.00 0.00 0.00
9 B1u 980 936 15.53 0.00 0.00 0.00
10 B2g 1870 1784 0.00 4.37 0.75 0.86
11 B2g 900 859 0.00 3.93 0.75 0.86
12 B2u 2710 2587 176.85 0.00 0.00 0.00
13 B2u 929 887 0.17 0.00 0.00 0.00
14 B2u 323 309 16.55 0.00 0.00 0.00
15 B3g 1025 978 0.00 29.45 0.75 0.86
16 B3u 2600 2482 151.76 0.00 0.00 0.00
17 B3u 1707 1629 448.39 0.00 0.00 0.00
18 B3u 1179 1125 66.46 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13763.6 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 13135.9 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 mPW1PW91/6-311G*
ABC
2.66860 0.61394 0.56418

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.878 0.000 0.000
B2 -0.878 0.000 0.000
H3 0.000 0.000 0.983
H4 0.000 0.000 -0.983
H5 1.455 1.041 0.000
H6 1.455 -1.041 0.000
H7 -1.455 1.041 0.000
H8 -1.455 -1.041 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.75631.31811.31811.19001.19002.55462.5546
B21.75631.31811.31812.55462.55461.19001.1900
H31.31811.31811.96602.04112.04112.04112.0411
H41.31811.31811.96602.04112.04112.04112.0411
H51.19002.55462.04112.04112.08222.90933.5776
H61.19002.55462.04112.04112.08223.57762.9093
H72.55461.19002.04112.04112.90933.57762.0822
H82.55461.19002.04112.04113.57762.90932.0822

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 83.552 B1 H4 B2 83.552
H3 B1 H4 96.448 H3 B1 H5 108.828
H3 B1 H6 108.828 H3 B2 H4 96.448
H3 B2 H7 108.828 H3 B2 H8 108.828
H4 B1 H5 108.828 H4 B1 H6 108.828
H4 B2 H7 108.828 H4 B2 H8 108.828
H5 B1 H6 122.050 H7 B2 H8 122.050
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.424      
2 B -0.424      
3 H 0.202      
4 H 0.202      
5 H 0.111      
6 H 0.111      
7 H 0.111      
8 H 0.111      


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 -18.820 0.000 0.000
y 0.000 -17.846 0.000
z 0.000 0.000 -14.881
Traceless
 xyz
x -2.457 0.000 0.000
y 0.000 -0.995 0.000
z 0.000 0.000 3.452
Polar
3z2-r26.904
x2-y2-0.975
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.741 0.000 0.000
y 0.000 4.472 0.000
z 0.000 0.000 3.474


<r2> (average value of r2) Å2
<r2> 33.175
(<r2>)1/2 5.760