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All results from a given calculation for B2H6 (Diborane)

using model chemistry: QCISD(TQ)=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at QCISD(TQ)=FULL/6-31+G**
 hartrees
Energy at 0K-53.095509
Energy at 298.15K-53.101450
HF Energy-52.820725
Nuclear repulsion energy32.229813
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 QCISD(TQ)=FULL/6-31+G**
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 2686 2686 0.00      
2 Ag 2252 2252 0.00      
3 Ag 1241 1241 0.00      
4 Ag 832 832 0.00      
5 Au 862 862 0.00      
6 B1g 2765 2765 0.00      
7 B1g 961 961 0.00      
8 B1u 2071 2071 0.00      
9 B1u 1006 1006 0.00      
10 B2g 1937 1937 0.00      
11 B2g 876 876 0.00      
12 B2u 2778 2778 0.00      
13 B2u 1008 1008 0.00      
14 B2u 378 378 0.00      
15 B3g 1066 1066 0.00      
16 B3u 2670 2670 0.00      
17 B3u 1807 1807 0.00      
18 B3u 1232 1232 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14213.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14213.1 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 QCISD(TQ)=FULL/6-31+G**
ABC
2.71430 0.61463 0.56442

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)=FULL/6-31+G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.879 0.000 0.000
B2 -0.879 0.000 0.000
H3 0.000 0.000 0.967
H4 0.000 0.000 -0.967
H5 1.455 1.036 0.000
H6 1.455 -1.036 0.000
H7 -1.455 1.036 0.000
H8 -1.455 -1.036 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.75781.30691.30691.18521.18522.55332.5533
B21.75781.30691.30692.55332.55331.18521.1852
H31.30691.30691.93432.03102.03102.03102.0310
H41.30691.30691.93432.03102.03102.03102.0310
H51.18522.55332.03102.03102.07162.90973.5719
H61.18522.55332.03102.03102.07163.57192.9097
H72.55331.18522.03102.03102.90973.57192.0716
H82.55331.18522.03102.03103.57192.90972.0716

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.527 B1 H4 B2 84.527
H3 B1 H4 95.473 H3 B1 H5 109.076
H3 B1 H6 109.076 H3 B2 H4 95.473
H3 B2 H7 109.076 H3 B2 H8 109.076
H4 B1 H5 109.076 H4 B1 H6 109.076
H4 B2 H7 109.076 H4 B2 H8 109.076
H5 B1 H6 121.849 H7 B2 H8 121.849
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability