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: MP4=FULL/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 MP4=FULL/Def2TZVPP
 hartrees
Energy at 0K-53.182080
Energy at 298.15K-53.188028
HF Energy-52.836030
Nuclear repulsion energy32.259666
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 MP4=FULL/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 2652 2652 0.00      
2 Ag 2195 2195 0.00      
3 Ag 1221 1221 0.00      
4 Ag 824 824 0.00      
5 Au 867 867 0.00      
6 B1g 2725 2725 0.00      
7 B1g 951 951 0.00      
8 B1u 2014 2014 0.00      
9 B1u 1004 1004 0.00      
10 B2g 1905 1905 0.00      
11 B2g 912 912 0.00      
12 B2u 2738 2738 0.00      
13 B2u 989 989 0.00      
14 B2u 381 381 0.00      
15 B3g 1076 1076 0.00      
16 B3u 2636 2636 0.00      
17 B3u 1760 1760 0.00      
18 B3u 1212 1212 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14030.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14030.5 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 MP4=FULL/Def2TZVPP
ABC
2.70581 0.61752 0.56711

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/Def2TZVPP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.877 0.000 0.000
B2 -0.877 0.000 0.000
H3 0.000 0.000 0.971
H4 0.000 0.000 -0.971
H5 1.450 1.036 0.000
H6 1.450 -1.036 0.000
H7 -1.450 1.036 0.000
H8 -1.450 -1.036 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.75351.30851.30851.18411.18412.54682.5468
B21.75351.30851.30852.54682.54681.18411.1841
H31.30851.30851.94262.02952.02952.02952.0295
H41.30851.30851.94262.02952.02952.02952.0295
H51.18412.54682.02952.02952.07242.89943.5639
H61.18412.54682.02952.02952.07243.56392.8994
H72.54681.18412.02952.02952.89943.56392.0724
H82.54681.18412.02952.02953.56392.89942.0724

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.141 B1 H4 B2 84.141
H3 B1 H4 95.859 H3 B1 H5 108.919
H3 B1 H6 108.919 H3 B2 H4 95.859
H3 B2 H7 108.919 H3 B2 H8 108.919
H4 B1 H5 108.919 H4 B1 H6 108.919
H4 B2 H7 108.919 H4 B2 H8 108.919
H5 B1 H6 122.121 H7 B2 H8 122.121
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability