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: CID/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at CID/3-21G
 hartrees
Energy at 0K-52.653022
Energy at 298.15K-52.658990
HF Energy-52.497433
Nuclear repulsion energy31.930369
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 CID/3-21G
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 2671 2488 0.00      
2 Ag 2199 2048 0.00      
3 Ag 1229 1145 0.00      
4 Ag 818 762 0.00      
5 Au 883 823 0.00      
6 B1g 2760 2571 0.00      
7 B1g 930 866 0.00      
8 B1u 1959 1825 27.15      
9 B1u 993 925 14.77      
10 B2g 1898 1768 0.00      
11 B2g 821 765 0.00      
12 B2u 2770 2581 131.35      
13 B2u 1037 966 4.89      
14 B2u 417 388 8.47      
15 B3g 1117 1040 0.00      
16 B3u 2657 2476 115.36      
17 B3u 1786 1664 573.71      
18 B3u 1228 1144 80.71      

Unscaled Zero Point Vibrational Energy (zpe) 14086.1 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 13122.6 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 CID/3-21G
ABC
2.66630 0.60262 0.55343

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.888 0.000 0.000
B2 -0.888 0.000 0.000
H3 0.000 0.000 0.975
H4 0.000 0.000 -0.975
H5 1.467 1.045 0.000
H6 1.467 -1.045 0.000
H7 -1.467 1.045 0.000
H8 -1.467 -1.045 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.77681.31941.31941.19481.19482.57712.5771
B21.77681.31941.31942.57712.57711.19481.1948
H31.31941.31941.95092.04862.04862.04862.0486
H41.31941.31941.95092.04862.04862.04862.0486
H51.19482.57712.04862.04862.09052.93443.6029
H61.19482.57712.04862.04862.09053.60292.9344
H72.57711.19482.04862.04862.93443.60292.0905
H82.57711.19482.04862.04863.60292.93442.0905

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.651 B1 H4 B2 84.651
H3 B1 H4 95.349 H3 B1 H5 109.038
H3 B1 H6 109.038 H3 B2 H4 95.349
H3 B2 H7 109.038 H3 B2 H8 109.038
H4 B1 H5 109.038 H4 B1 H6 109.038
H4 B2 H7 109.038 H4 B2 H8 109.038
H5 B1 H6 122.050 H7 B2 H8 122.050
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability