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All results from a given calculation for B2H6 (Diborane)

using model chemistry: CCSD(T)/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 CCSD(T)/3-21G*
 hartrees
Energy at 0K-52.667537
Energy at 298.15K-52.673447
HF Energy-52.497145
Nuclear repulsion energy31.815083
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)/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 2624 2475        
2 Ag 2164 2041        
3 Ag 1208 1139        
4 Ag 802 757        
5 Au 867 817        
6 B1g 2715 2560        
7 B1g 913 861        
8 B1u 1928 1818        
9 B1u 971 916        
10 B2g 1867 1761        
11 B2g 794 749        
12 B2u 2724 2569        
13 B2u 1013 955        
14 B2u 405 382        
15 B3g 1085 1024        
16 B3u 2613 2464        
17 B3u 1760 1660        
18 B3u 1208 1140        

Unscaled Zero Point Vibrational Energy (zpe) 13830.9 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 13043.9 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 CCSD(T)/3-21G*
ABC
2.64612 0.59818 0.54922

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.892 0.000 0.000
B2 -0.892 0.000 0.000
H3 0.000 0.000 0.978
H4 0.000 0.000 -0.978
H5 1.472 1.050 0.000
H6 1.472 -1.050 0.000
H7 -1.472 1.050 0.000
H8 -1.472 -1.050 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.78391.32391.32391.19921.19922.58652.5865
B21.78391.32391.32392.58652.58651.19921.1992
H31.32391.32391.95662.05562.05562.05562.0556
H41.32391.32391.95662.05562.05562.05562.0556
H51.19922.58652.05562.05562.09932.94393.6158
H61.19922.58652.05562.05562.09933.61582.9439
H72.58651.19922.05562.05562.94393.61582.0993
H82.58651.19922.05562.05563.61582.94392.0993

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.715 B1 H4 B2 84.715
H3 B1 H4 95.285 H3 B1 H5 109.017
H3 B1 H6 109.017 H3 B2 H4 95.285
H3 B2 H7 109.017 H3 B2 H8 109.017
H4 B1 H5 109.017 H4 B1 H6 109.017
H4 B2 H7 109.017 H4 B2 H8 109.017
H5 B1 H6 122.155 H7 B2 H8 122.155
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability