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All results from a given calculation for B2H6 (Diborane)

using model chemistry: G3MP2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at G3MP2
 hartrees
Energy at 0K-53.122982
Energy at 298.15K-53.118396
HF Energy-52.812402
Nuclear repulsion energy32.054054
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 HF/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 2754 2594 0.00 216.11 0.13 0.23
2 Ag 2300 2168 0.00 88.31 0.11 0.20
3 Ag 1303 1228 0.00 13.62 0.74 0.85
4 Ag 828 780 0.00 16.86 0.22 0.36
5 Au 897 845 0.00 0.00 0.69 0.81
6 B1g 2828 2665 0.00 99.29 0.75 0.86
7 B1g 999 942 0.00 1.79 0.75 0.86
8 B1u 2067 1948 66.39 0.00 0.00 0.00
9 B1u 1071 1009 26.41 0.00 0.75 0.86
10 B2g 1932 1821 0.00 8.08 0.75 0.86
11 B2g 900 848 0.00 5.21 0.75 0.86
12 B2u 2843 2679 255.24 0.00 0.00 0.00
13 B2u 1126 1061 11.99 0.00 0.16 0.28
14 B2u 409 385 11.40 0.00 0.16 0.28
15 B3g 1193 1124 0.00 44.98 0.75 0.86
16 B3u 2735 2577 182.42 0.00 0.00 0.00
17 B3u 1833 1727 782.54 0.00 0.00 0.00
18 B3u 1286 1212 138.54 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14652.7 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 13805.8 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 MP2=FULL/6-31G*
ABC
2.69227 0.61771 0.56712

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.875 0.000 0.000
B2 -0.875 0.000 0.000
H3 0.000 0.000 0.974
H4 0.000 0.000 -0.974
H5 1.455 1.039 0.000
H6 1.455 -1.039 0.000
H7 -1.455 1.039 0.000
H8 -1.455 -1.039 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.74941.30941.30941.18951.18952.55042.5504
B21.74941.30941.30942.55042.55041.18951.1895
H31.30941.30941.94872.03562.03562.03562.0356
H41.30941.30941.94872.03562.03562.03562.0356
H51.18952.55042.03562.03562.07712.90923.5746
H61.18952.55042.03562.03562.07713.57462.9092
H72.55041.18952.03562.03562.90923.57462.0771
H82.55041.18952.03562.03563.57462.90922.0771

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 85.034 B1 H4 B2 85.034
H3 B1 H4 94.966 H3 B1 H5 109.106
H3 B1 H6 109.106 H3 B2 H4 94.966
H3 B2 H7 109.106 H3 B2 H8 109.106
H4 B1 H5 109.106 H4 B1 H6 109.106
H4 B2 H7 109.106 H4 B2 H8 109.106
H5 B1 H6 122.063 H7 B2 H8 122.063
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability