return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for B2H6 (Diborane)

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31G*
 hartrees
Energy at 0K-53.288284
Energy at 298.15K-53.294155
HF Energy-53.288284
Nuclear repulsion energy32.035042
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 B3LYPultrafine/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 2653 2542 0.00 209.69 0.13 0.22
2 Ag 2205 2113 0.00 73.54 0.10 0.19
3 Ag 1210 1159 0.00 14.77 0.72 0.84
4 Ag 799 766 0.00 15.80 0.23 0.37
5 Au 851 816 0.00 0.00 0.00 0.00
6 B1g 2732 2617 0.00 102.08 0.75 0.86
7 B1g 945 906 0.00 2.15 0.75 0.86
8 B1u 2023 1938 20.86 0.00 0.00 0.00
9 B1u 1000 958 20.34 0.00 0.00 0.00
10 B2g 1863 1785 0.00 5.79 0.75 0.86
11 B2g 889 851 0.00 4.10 0.75 0.86
12 B2u 2745 2630 177.67 0.00 0.00 0.00
13 B2u 976 935 1.02 0.00 0.00 0.00
14 B2u 352 337 13.64 0.00 0.00 0.00
15 B3g 1054 1010 0.00 36.60 0.75 0.86
16 B3u 2640 2529 145.04 0.00 0.00 0.00
17 B3u 1730 1658 471.15 0.00 0.00 0.00
18 B3u 1204 1154 78.33 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13936.2 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 13350.9 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 B3LYPultrafine/6-31G*
ABC
2.68152 0.60719 0.55799

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/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 0.976
H4 0.000 0.000 -0.976
H5 1.463 1.041 0.000
H6 1.463 -1.041 0.000
H7 -1.463 1.041 0.000
H8 -1.463 -1.041 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.76871.31691.31691.19071.19072.56742.5674
B21.76871.31691.31692.56742.56741.19071.1907
H31.31691.31691.95172.04332.04332.04332.0433
H41.31691.31691.95172.04332.04332.04332.0433
H51.19072.56742.04332.04332.08162.92543.5904
H61.19072.56742.04332.04332.08163.59042.9254
H72.56741.19072.04332.04332.92543.59042.0816
H82.56741.19072.04332.04333.59042.92542.0816

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.366 B1 H4 B2 84.366
H3 B1 H4 95.634 H3 B1 H5 109.036
H3 B1 H6 109.036 H3 B2 H4 95.634
H3 B2 H7 109.036 H3 B2 H8 109.036
H4 B1 H5 109.036 H4 B1 H6 109.036
H4 B2 H7 109.036 H4 B2 H8 109.036
H5 B1 H6 121.881 H7 B2 H8 121.881
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.102      
2 B -0.102      
3 H 0.087      
4 H 0.087      
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 -18.503 0.000 0.000
y 0.000 -17.486 0.000
z 0.000 0.000 -14.593
Traceless
 xyz
x -2.463 0.000 0.000
y 0.000 -0.938 0.000
z 0.000 0.000 3.401
Polar
3z2-r26.802
x2-y2-1.017
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.316 0.000 0.000
y 0.000 3.924 0.000
z 0.000 0.000 3.097


<r2> (average value of r2) Å2
<r2> 33.147
(<r2>)1/2 5.757