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: QCISD/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at QCISD/Def2TZVPP
 hartrees
Energy at 0K-53.135662
Energy at 298.15K-53.141608
HF Energy-52.836118
Nuclear repulsion energy32.149725
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 QCISD/Def2TZVPP
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 2640 2640 0.00      
2 Ag 2202 2202 0.00      
3 Ag 1223 1223 0.00      
4 Ag 821 821 0.00      
5 Au 861 861 0.00      
6 B1g 2716 2716 0.00      
7 B1g 951 951 0.00      
8 B1u 2021 2021 12.18      
9 B1u 1006 1006 25.45      
10 B2g 1904 1904 0.00      
11 B2g 903 903 0.00      
12 B2u 2730 2730 175.78      
13 B2u 999 999 1.20      
14 B2u 380 380 15.95      
15 B3g 1081 1081 0.00      
16 B3u 2624 2624 148.55      
17 B3u 1767 1767 505.34      
18 B3u 1211 1211 80.29      

Unscaled Zero Point Vibrational Energy (zpe) 14019.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14019.2 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 QCISD/Def2TZVPP
ABC
2.69009 0.61289 0.56293

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/Def2TZVPP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.880 0.000 0.000
B2 -0.880 0.000 0.000
H3 0.000 0.000 0.974
H4 0.000 0.000 -0.974
H5 1.455 1.039 0.000
H6 1.455 -1.039 0.000
H7 -1.455 1.039 0.000
H8 -1.455 -1.039 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.76061.31291.31291.18741.18742.55572.5557
B21.76061.31291.31292.55572.55571.18741.1874
H31.31291.31291.94822.03592.03592.03592.0359
H41.31291.31291.94822.03592.03592.03592.0359
H51.18742.55572.03592.03592.07852.90923.5754
H61.18742.55572.03592.03592.07853.57542.9092
H72.55571.18742.03592.03592.90923.57542.0785
H82.55571.18742.03592.03593.57542.90922.0785

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.209 B1 H4 B2 84.209
H3 B1 H4 95.791 H3 B1 H5 108.922
H3 B1 H6 108.922 H3 B2 H4 95.791
H3 B2 H7 108.922 H3 B2 H8 108.922
H4 B1 H5 108.922 H4 B1 H6 108.922
H4 B2 H7 108.922 H4 B2 H8 108.922
H5 B1 H6 122.150 H7 B2 H8 122.150
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability