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(T)=FULL/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 QCISD(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-53.095180
Energy at 298.15K-53.101076
HF Energy-52.817069
Nuclear repulsion energy31.733311
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(T)=FULL/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 2610 2532 0.00      
2 Ag 2167 2102 0.00      
3 Ag 1191 1155 0.00      
4 Ag 805 781 0.00      
5 Au 836 811 0.00      
6 B1g 2687 2606 0.00      
7 B1g 925 897 0.00      
8 B1u 1986 1927 0.00      
9 B1u 983 953 0.00      
10 B2g 1880 1824 0.00      
11 B2g 881 855 0.00      
12 B2u 2703 2622 0.00      
13 B2u 964 935 0.00      
14 B2u 367 356 0.00      
15 B3g 1055 1023 0.00      
16 B3u 2594 2516 0.00      
17 B3u 1747 1695 0.00      
18 B3u 1176 1141 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 13777.7 cm-1
Scaled (by 0.9701) Zero Point Vibrational Energy (zpe) 13365.8 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(T)=FULL/aug-cc-pVDZ
ABC
2.62468 0.59565 0.54666

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/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 0.982
H4 0.000 0.000 -0.982
H5 1.472 1.054 0.000
H6 1.472 -1.054 0.000
H7 -1.472 1.054 0.000
H8 -1.472 -1.054 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.78951.32841.32841.20171.20172.59062.5906
B21.78951.32841.32842.59062.59061.20171.2017
H31.32841.32841.96372.05942.05942.05942.0594
H41.32841.32841.96372.05942.05942.05942.0594
H51.20172.59062.05942.05942.10832.94343.6205
H61.20172.59062.05942.05942.10833.62052.9434
H72.59061.20172.05942.05942.94343.62052.1083
H82.59061.20172.05942.05943.62052.94342.1083

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.684 B1 H4 B2 84.684
H3 B1 H4 95.316 H3 B1 H5 108.868
H3 B1 H6 108.868 H3 B2 H4 95.316
H3 B2 H7 108.868 H3 B2 H8 108.868
H4 B1 H5 108.868 H4 B1 H6 108.868
H4 B2 H7 108.868 H4 B2 H8 108.868
H5 B1 H6 122.614 H7 B2 H8 122.614
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability