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All results from a given calculation for B2H6 (Diborane)

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-52.665020
Energy at 298.15K-52.670945
HF Energy-52.497225
Nuclear repulsion energy31.836678
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 MP4/3-21G
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 2639 2560 0.00      
2 Ag 2171 2106 0.00      
3 Ag 1213 1177 0.00      
4 Ag 805 781 0.00      
5 Au 871 845 0.00      
6 B1g 2732 2649 0.00      
7 B1g 917 889 0.00      
8 B1u 1937 1878 0.00      
9 B1u 974 945 0.00      
10 B2g 1878 1822 0.00      
11 B2g 799 775 0.00      
12 B2u 2741 2658 0.00      
13 B2u 1013 982 0.00      
14 B2u 406 394 0.00      
15 B3g 1088 1055 0.00      
16 B3u 2628 2549 0.00      
17 B3u 1765 1712 0.00      
18 B3u 1214 1177 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 13895.5 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 13475.9 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 MP4/3-21G
ABC
2.65012 0.59890 0.54994

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.891 0.000 0.000
B2 -0.891 0.000 0.000
H3 0.000 0.000 0.978
H4 0.000 0.000 -0.978
H5 1.471 1.049 0.000
H6 1.471 -1.049 0.000
H7 -1.471 1.049 0.000
H8 -1.471 -1.049 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.78301.32331.32331.19811.19812.58462.5846
B21.78301.32331.32332.58462.58461.19811.1981
H31.32331.32331.95582.05412.05412.05412.0541
H41.32331.32331.95582.05412.05412.05412.0541
H51.19812.58462.05412.05412.09742.94173.6128
H61.19812.58462.05412.05412.09743.61282.9417
H72.58461.19812.05412.05412.94173.61282.0974
H82.58461.19812.05412.05413.61282.94172.0974

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.707 B1 H4 B2 84.707
H3 B1 H4 95.293 H3 B1 H5 109.012
H3 B1 H6 109.012 H3 B2 H4 95.293
H3 B2 H7 109.012 H3 B2 H8 109.012
H4 B1 H5 109.012 H4 B1 H6 109.012
H4 B2 H7 109.012 H4 B2 H8 109.012
H5 B1 H6 122.164 H7 B2 H8 122.164
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability