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)/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)/aug-cc-pVDZ
 hartrees
Energy at 0K-53.089794
Energy at 298.15K-53.095683
HF Energy-52.817020
Nuclear repulsion energy31.687118
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)/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 2603 2546        
2 Ag 2160 2112        
3 Ag 1190 1164        
4 Ag 801 783        
5 Au 833 814        
6 B1g 2680 2621        
7 B1g 923 903        
8 B1u 1978 1935        
9 B1u 981 960        
10 B2g 1872 1831        
11 B2g 876 856        
12 B2u 2696 2637        
13 B2u 962 941        
14 B2u 366 358        
15 B3g 1051 1028        
16 B3u 2587 2530        
17 B3u 1740 1701        
18 B3u 1174 1148        

Unscaled Zero Point Vibrational Energy (zpe) 13736.4 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 13431.4 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)/aug-cc-pVDZ
ABC
2.61751 0.59370 0.54491

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.896 0.000 0.000
B2 -0.896 0.000 0.000
H3 0.000 0.000 0.983
H4 0.000 0.000 -0.983
H5 1.473 1.056 0.000
H6 1.473 -1.056 0.000
H7 -1.473 1.056 0.000
H8 -1.473 -1.056 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.79291.33071.33071.20281.20282.59422.5942
B21.79291.33071.33072.59422.59421.20281.2028
H31.33071.33071.96672.06192.06192.06192.0619
H41.33071.33071.96672.06192.06192.06192.0619
H51.20282.59422.06192.06192.11102.94653.6247
H61.20282.59422.06192.06192.11103.62472.9465
H72.59421.20282.06192.06192.94653.62472.1110
H82.59421.20282.06192.06193.62472.94652.1110

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.706 B1 H4 B2 84.706
H3 B1 H4 95.294 H3 B1 H5 108.849
H3 B1 H6 108.849 H3 B2 H4 95.294
H3 B2 H7 108.849 H3 B2 H8 108.849
H4 B1 H5 108.849 H4 B1 H6 108.849
H4 B2 H7 108.849 H4 B2 H8 108.849
H5 B1 H6 122.688 H7 B2 H8 122.688
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability