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: CCSD(T)/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at CCSD(T)/aug-cc-pVQZ
 hartrees
Energy at 0K-53.160116
Energy at 298.15K-53.166029
HF Energy-52.839081
Nuclear repulsion energy32.161446
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 CCSD(T)/aug-cc-pVQZ
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 2626 2524        
2 Ag 2189 2104        
3 Ag 1206 1159        
4 Ag 817 785        
5 Au 853 820        
6 B1g 2704 2600        
7 B1g 939 903        
8 B1u 2019 1941        
9 B1u 993 955        
10 B2g 1900 1827        
11 B2g 894 860        
12 B2u 2718 2613        
13 B2u 968 931        
14 B2u 367 353        
15 B3g 1055 1015        
16 B3u 2611 2510        
17 B3u 1756 1688        
18 B3u 1196 1150        

Unscaled Zero Point Vibrational Energy (zpe) 13904.9 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 13368.2 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 CCSD(T)/aug-cc-pVQZ
ABC
2.68364 0.61440 0.56417

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.879 0.000 0.000
B2 -0.879 0.000 0.000
H3 0.000 0.000 0.976
H4 0.000 0.000 -0.976
H5 1.452 1.040 0.000
H6 1.452 -1.040 0.000
H7 -1.452 1.040 0.000
H8 -1.452 -1.040 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.75831.31351.31351.18761.18762.55282.5528
B21.75831.31351.31352.55282.55281.18761.1876
H31.31351.31351.95172.03542.03542.03542.0354
H41.31351.31351.95172.03542.03542.03542.0354
H51.18762.55282.03542.03542.08052.90423.5725
H61.18762.55282.03542.03542.08053.57252.9042
H72.55281.18762.03542.03542.90423.57252.0805
H82.55281.18762.03542.03543.57252.90422.0805

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.031 B1 H4 B2 84.031
H3 B1 H4 95.969 H3 B1 H5 108.839
H3 B1 H6 108.839 H3 B2 H4 95.969
H3 B2 H7 108.839 H3 B2 H8 108.839
H4 B1 H5 108.839 H4 B1 H6 108.839
H4 B2 H7 108.839 H4 B2 H8 108.839
H5 B1 H6 122.309 H7 B2 H8 122.309
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability