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: HF/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at HF/aug-cc-pVDZ
 hartrees
Energy at 0K-52.817242
Energy at 298.15K-52.823258
HF Energy-52.817242
Nuclear repulsion energy31.812117
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 HF/aug-cc-pVDZ
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 2697 2456 0.00 304.20 0.06 0.12
2 Ag 2227 2028 0.00 85.92 0.06 0.12
3 Ag 1279 1165 0.00 4.59 0.73 0.84
4 Ag 820 746 0.00 20.67 0.14 0.25
5 Au 876 797 0.00 0.00 0.16 0.28
6 B1g 2768 2520 0.00 110.47 0.75 0.86
7 B1g 981 893 0.00 0.47 0.75 0.86
8 B1u 2007 1828 40.50 0.00 0.00 0.00
9 B1u 1050 956 25.92 0.00 0.00 0.00
10 B2g 1885 1717 0.00 4.30 0.75 0.86
11 B2g 882 803 0.00 0.23 0.75 0.86
12 B2u 2786 2537 249.70 0.00 0.00 0.00
13 B2u 1076 980 3.98 0.00 0.72 0.84
14 B2u 401 365 14.79 0.00 0.00 0.00
15 B3g 1145 1042 0.00 6.32 0.75 0.86
16 B3u 2678 2438 188.91 0.00 0.00 0.00
17 B3u 1771 1613 750.82 0.00 0.00 0.00
18 B3u 1257 1145 126.06 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 14291.3 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 13013.7 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 HF/aug-cc-pVDZ
ABC
2.66219 0.59509 0.54767

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.895 0.000 0.000
B2 -0.895 0.000 0.000
H3 0.000 0.000 0.981
H4 0.000 0.000 -0.981
H5 1.472 1.044 0.000
H6 1.472 -1.044 0.000
H7 -1.472 1.044 0.000
H8 -1.472 -1.044 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.79081.32821.32821.19251.19252.58732.5873
B21.79081.32821.32822.58732.58731.19251.1925
H31.32821.32821.96192.05392.05392.05392.0539
H41.32821.32821.96192.05392.05392.05392.0539
H51.19252.58732.05392.05392.08772.94403.6091
H61.19252.58732.05392.05392.08773.60912.9440
H72.58731.19252.05392.05392.94403.60912.0877
H82.58731.19252.05392.05393.60912.94402.0877

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.778 B1 H4 B2 84.778
H3 B1 H4 95.222 H3 B1 H5 109.024
H3 B1 H6 109.024 H3 B2 H4 95.222
H3 B2 H7 109.024 H3 B2 H8 109.024
H4 B1 H5 109.024 H4 B1 H6 109.024
H4 B2 H7 109.024 H4 B2 H8 109.024
H5 B1 H6 122.171 H7 B2 H8 122.171
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.822      
2 B -0.822      
3 H 0.208      
4 H 0.208      
5 H 0.307      
6 H 0.307      
7 H 0.307      
8 H 0.307      


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 -19.038 0.000 0.000
y 0.000 -18.317 0.000
z 0.000 0.000 -15.205
Traceless
 xyz
x -2.277 0.000 0.000
y 0.000 -1.196 0.000
z 0.000 0.000 3.473
Polar
3z2-r26.946
x2-y2-0.721
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.724 0.000 0.000
y 0.000 4.696 0.000
z 0.000 0.000 4.119


<r2> (average value of r2) Å2
<r2> 33.910
(<r2>)1/2 5.823