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: BLYP/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-53.245645
Energy at 298.15K-53.251484
HF Energy-53.245645
Nuclear repulsion energy32.019786
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/aug-cc-pVTZ
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 2569 2560 0.00 326.22 0.06 0.12
2 Ag 2131 2123 0.00 82.06 0.05 0.10
3 Ag 1176 1172 0.00 7.23 0.58 0.73
4 Ag 775 772 0.00 18.50 0.15 0.25
5 Au 832 829 0.00 0.00 0.00 0.00
6 B1g 2641 2632 0.00 126.83 0.75 0.86
7 B1g 921 918 0.00 0.46 0.75 0.86
8 B1u 1948 1942 6.33 0.00 0.00 0.00
9 B1u 971 968 22.36 0.00 0.00 0.00
10 B2g 1810 1804 0.00 3.48 0.75 0.86
11 B2g 874 871 0.00 0.02 0.75 0.86
12 B2u 2656 2647 172.08 0.00 0.00 0.00
13 B2u 927 924 0.22 0.00 0.00 0.00
14 B2u 351 349 16.56 0.00 0.00 0.00
15 B3g 985 982 0.00 5.61 0.75 0.86
16 B3u 2557 2549 142.23 0.00 0.00 0.00
17 B3u 1670 1664 415.30 0.00 0.00 0.00
18 B3u 1170 1166 75.15 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13482.2 cm-1
Scaled (by 0.9966) Zero Point Vibrational Energy (zpe) 13436.3 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/aug-cc-pVTZ
ABC
2.68404 0.60602 0.55728

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.885 0.000 0.000
B2 -0.885 0.000 0.000
H3 0.000 0.000 0.977
H4 0.000 0.000 -0.977
H5 1.465 1.040 0.000
H6 1.465 -1.040 0.000
H7 -1.465 1.040 0.000
H8 -1.465 -1.040 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.76991.31821.31821.19031.19032.56942.5694
B21.76991.31821.31822.56942.56941.19031.1903
H31.31821.31821.95402.04472.04472.04472.0447
H41.31821.31821.95402.04472.04472.04472.0447
H51.19032.56942.04472.04472.07912.92953.5924
H61.19032.56942.04472.04472.07913.59242.9295
H72.56941.19032.04472.04472.92953.59242.0791
H82.56941.19032.04472.04473.59242.92952.0791

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.339 B1 H4 B2 84.339
H3 B1 H4 95.661 H3 B1 H5 109.087
H3 B1 H6 109.087 H3 B2 H4 95.661
H3 B2 H7 109.087 H3 B2 H8 109.087
H4 B1 H5 109.087 H4 B1 H6 109.087
H4 B2 H7 109.087 H4 B2 H8 109.087
H5 B1 H6 121.699 H7 B2 H8 121.699
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.104      
2 B 0.104      
3 H 0.008      
4 H 0.008      
5 H -0.056      
6 H -0.056      
7 H -0.056      
8 H -0.056      


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 -19.167 0.000 0.000
y 0.000 -18.210 0.000
z 0.000 0.000 -15.053
Traceless
 xyz
x -2.536 0.000 0.000
y 0.000 -1.100 0.000
z 0.000 0.000 3.636
Polar
3z2-r27.271
x2-y2-0.957
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.189 0.000 0.000
y 0.000 5.030 0.000
z 0.000 0.000 4.318


<r2> (average value of r2) Å2
<r2> 33.561
(<r2>)1/2 5.793