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All results from a given calculation for B2H6 (Diborane)

using model chemistry: CISD/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 CISD/3-21G*
 hartrees
Energy at 0K-52.653757
Energy at 298.15K-52.659711
HF Energy-52.497439
Nuclear repulsion energy31.911881
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 CISD/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 2666 2491 0.00      
2 Ag 2196 2052 0.00      
3 Ag 1227 1147 0.00      
4 Ag 813 760 0.00      
5 Au 881 823 0.00      
6 B1g 2754 2574 0.00      
7 B1g 928 867 0.00      
8 B1u 1953 1825 28.63      
9 B1u 992 927 14.90      
10 B2g 1891 1767 0.00      
11 B2g 816 763 0.00      
12 B2u 2764 2583 134.59      
13 B2u 1038 970 5.09      
14 B2u 416 389 8.36      
15 B3g 1114 1041 0.00      
16 B3u 2652 2478 115.79      
17 B3u 1782 1666 569.50      
18 B3u 1226 1146 82.53      

Unscaled Zero Point Vibrational Energy (zpe) 14054.4 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 13132.4 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 CISD/3-21G*
ABC
2.66604 0.60137 0.55227

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.890 0.000 0.000
B2 -0.890 0.000 0.000
H3 0.000 0.000 0.975
H4 0.000 0.000 -0.975
H5 1.468 1.046 0.000
H6 1.468 -1.046 0.000
H7 -1.468 1.046 0.000
H8 -1.468 -1.046 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.77931.31981.31981.19501.19502.57922.5792
B21.77931.31981.31982.57922.57921.19501.1950
H31.31981.31981.94962.04912.04912.04912.0491
H41.31981.31981.94962.04912.04912.04912.0491
H51.19502.57922.04912.04912.09132.93623.6049
H61.19502.57922.04912.04912.09133.60492.9362
H72.57921.19502.04912.04912.93623.60492.0913
H82.57921.19502.04912.04913.60492.93622.0913

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.771 B1 H4 B2 84.771
H3 B1 H4 95.229 H3 B1 H5 109.046
H3 B1 H6 109.046 H3 B2 H4 95.229
H3 B2 H7 109.046 H3 B2 H8 109.046
H4 B1 H5 109.046 H4 B1 H6 109.046
H4 B2 H7 109.046 H4 B2 H8 109.046
H5 B1 H6 122.097 H7 B2 H8 122.097
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability