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: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-53.020782
Energy at 298.15K-53.026710
HF Energy-52.812119
Nuclear repulsion energy32.150401
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 MP3/6-31G*
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 2689 2524 0.00      
2 Ag 2259 2121 0.00      
3 Ag 1238 1162 0.00      
4 Ag 843 791 0.00      
5 Au 869 816 0.00      
6 B1g 2773 2603 0.00      
7 B1g 965 906 0.00      
8 B1u 2096 1967 13.73      
9 B1u 1008 946 17.04      
10 B2g 1949 1830 0.00      
11 B2g 893 838 0.00      
12 B2u 2785 2614 157.66      
13 B2u 997 936 2.10      
14 B2u 368 345 13.44      
15 B3g 1076 1010 0.00      
16 B3u 2676 2511 140.14      
17 B3u 1808 1697 491.78      
18 B3u 1230 1154 67.83      

Unscaled Zero Point Vibrational Energy (zpe) 14260.0 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 13384.5 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 MP3/6-31G*
ABC
2.68230 0.61532 0.56506

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.876 0.000 0.000
B2 -0.876 0.000 0.000
H3 0.000 0.000 0.977
H4 0.000 0.000 -0.977
H5 1.458 1.040 0.000
H6 1.458 -1.040 0.000
H7 -1.458 1.040 0.000
H8 -1.458 -1.040 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.75241.31231.31231.19161.19162.55532.5553
B21.75241.31231.31232.55532.55531.19161.1916
H31.31231.31231.95402.04002.04002.04002.0400
H41.31231.31231.95402.04002.04002.04002.0400
H51.19162.55532.04002.04002.08012.91573.5816
H61.19162.55532.04002.04002.08013.58162.9157
H72.55531.19162.04002.04002.91573.58162.0801
H82.55531.19162.04002.04003.58162.91572.0801

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 83.775 B1 H4 B2 83.775
H3 B1 H4 96.225 H3 B1 H5 109.018
H3 B1 H6 109.018 H3 B2 H4 96.225
H3 B2 H7 109.018 H3 B2 H8 109.018
H4 B1 H5 109.018 H4 B1 H6 109.018
H4 B2 H7 109.018 H4 B2 H8 109.018
H5 B1 H6 121.572 H7 B2 H8 121.572
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability