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All results from a given calculation for B2H6 (Diborane)

using model chemistry: MP2=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at MP2=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-53.129309
Energy at 298.15K-53.135255
HF Energy-52.833228
Nuclear repulsion energy32.338130
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 MP2=FULL/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 2674 2520 0.00 272.16 0.07 0.13
2 Ag 2233 2105 0.00 86.92 0.04 0.08
3 Ag 1224 1154 0.00 5.06 0.71 0.83
4 Ag 839 791 0.00 18.97 0.15 0.25
5 Au 872 822 0.00 0.00 0.00 0.00
6 B1g 2756 2598 0.00 102.17 0.75 0.86
7 B1g 949 895 0.00 0.55 0.75 0.86
8 B1u 2064 1946 6.01 0.00 0.00 0.00
9 B1u 1006 948 26.40 0.00 0.00 0.00
10 B2g 1949 1837 0.00 4.46 0.75 0.86
11 B2g 919 866 0.00 0.08 0.75 0.86
12 B2u 2770 2611 163.50 0.00 0.00 0.00
13 B2u 969 913 0.56 0.00 0.00 0.00
14 B2u 371 350 16.96 0.00 0.00 0.00
15 B3g 1065 1004 0.00 5.78 0.75 0.86
16 B3u 2658 2506 142.99 0.00 0.00 0.00
17 B3u 1776 1675 476.30 0.00 0.00 0.00
18 B3u 1215 1145 71.94 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 14152.9 cm-1
Scaled (by 0.9427) Zero Point Vibrational Energy (zpe) 13342.0 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/6-311+G(3df,2p)
ABC
2.70980 0.62226 0.57141

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311+G(3df,2p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.873 0.000 0.000
B2 -0.873 0.000 0.000
H3 0.000 0.000 0.972
H4 0.000 0.000 -0.972
H5 1.445 1.035 0.000
H6 1.445 -1.035 0.000
H7 -1.445 1.035 0.000
H8 -1.445 -1.035 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.74521.30641.30641.18261.18262.53832.5383
B21.74521.30641.30642.53832.53831.18261.1826
H31.30641.30641.94442.02592.02592.02592.0259
H41.30641.30641.94442.02592.02592.02592.0259
H51.18262.53832.02592.02592.06942.89043.5548
H61.18262.53832.02592.02592.06943.55482.8904
H72.53831.18262.02592.02592.89043.55482.0694
H82.53831.18262.02592.02593.55482.89042.0694

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 83.819 B1 H4 B2 83.819
H3 B1 H4 96.181 H3 B1 H5 108.871
H3 B1 H6 108.871 H3 B2 H4 96.181
H3 B2 H7 108.871 H3 B2 H8 108.871
H4 B1 H5 108.871 H4 B1 H6 108.871
H4 B2 H7 108.871 H4 B2 H8 108.871
H5 B1 H6 122.078 H7 B2 H8 122.078
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability