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All results from a given calculation for B2H6 (Diborane)

using model chemistry: MP2=FULL/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 MP2=FULL/3-21G
 hartrees
Energy at 0K-52.635014
Energy at 298.15K-52.640979
HF Energy-52.497566
Nuclear repulsion energy31.959265
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/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 2690 2569 0.00 192.52 0.11 0.20
2 Ag 2214 2114 0.00 95.89 0.10 0.18
3 Ag 1240 1184 0.00 15.79 0.75 0.85
4 Ag 816 779 0.00 18.38 0.25 0.40
5 Au 888 848 0.00 0.00 0.00 0.00
6 B1g 2784 2658 0.00 81.27 0.75 0.86
7 B1g 936 893 0.00 1.69 0.75 0.86
8 B1u 1976 1886 23.95 0.00 0.00 0.00
9 B1u 996 951 15.85 0.00 0.00 0.00
10 B2g 1923 1836 0.00 7.77 0.75 0.86
11 B2g 817 780 0.00 4.02 0.75 0.86
12 B2u 2794 2668 134.24 0.00 0.00 0.00
13 B2u 1033 986 4.47 0.00 0.00 0.00
14 B2u 412 394 8.93 0.00 0.00 0.00
15 B3g 1108 1058 0.00 46.76 0.75 0.86
16 B3u 2679 2558 115.68 0.00 0.00 0.00
17 B3u 1801 1720 549.95 0.00 0.00 0.00
18 B3u 1240 1184 83.50 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 14173.1 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 13532.5 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/3-21G
ABC
2.67679 0.60261 0.55342

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.889 0.000 0.000
B2 -0.889 0.000 0.000
H3 0.000 0.000 0.972
H4 0.000 0.000 -0.972
H5 1.466 1.044 0.000
H6 1.466 -1.044 0.000
H7 -1.466 1.044 0.000
H8 -1.466 -1.044 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.77811.31751.31751.19271.19272.57602.5760
B21.77811.31751.31752.57602.57601.19271.1927
H31.31751.31751.94462.04552.04552.04552.0455
H41.31751.31751.94462.04552.04552.04552.0455
H51.19272.57602.04552.04552.08762.93213.5993
H61.19272.57602.04552.04552.08763.59932.9321
H72.57601.19272.04552.04552.93213.59932.0876
H82.57601.19272.04552.04553.59932.93212.0876

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.880 B1 H4 B2 84.880
H3 B1 H4 95.120 H3 B1 H5 109.054
H3 B1 H6 109.054 H3 B2 H4 95.120
H3 B2 H7 109.054 H3 B2 H8 109.054
H4 B1 H5 109.054 H4 B1 H6 109.054
H4 B2 H7 109.054 H4 B2 H8 109.054
H5 B1 H6 122.137 H7 B2 H8 122.137
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability