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All results from a given calculation for B2H6 (Diborane)

using model chemistry: mPW1PW91/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at mPW1PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-53.283721
Energy at 298.15K-53.289586
HF Energy-53.283721
Nuclear repulsion energy32.203380
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 mPW1PW91/aug-cc-pVTZ
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 2625 2515 0.00 306.51 0.06 0.12
2 Ag 2192 2100 0.00 85.25 0.05 0.09
3 Ag 1196 1146 0.00 6.25 0.64 0.78
4 Ag 818 784 0.00 18.38 0.14 0.25
5 Au 852 816 0.00 0.00 0.00 0.00
6 B1g 2701 2588 0.00 115.54 0.75 0.86
7 B1g 934 894 0.00 0.43 0.75 0.86
8 B1u 2033 1948 4.69 0.00 0.00 0.00
9 B1u 985 943 21.50 0.00 0.75 0.86
10 B2g 1889 1810 0.00 3.51 0.75 0.86
11 B2g 899 861 0.00 0.03 0.75 0.86
12 B2u 2717 2603 161.32 0.00 0.00 0.00
13 B2u 926 887 0.05 0.00 0.00 0.00
14 B2u 337 323 17.14 0.00 0.00 0.00
15 B3g 1004 962 0.00 5.66 0.75 0.86
16 B3u 2611 2501 142.13 0.00 0.00 0.00
17 B3u 1722 1650 417.67 0.00 0.00 0.00
18 B3u 1187 1137 63.95 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13813.5 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 13234.8 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 mPW1PW91/aug-cc-pVTZ
ABC
2.68552 0.61790 0.56783

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.874 0.000 0.000
B2 -0.874 0.000 0.000
H3 0.000 0.000 0.980
H4 0.000 0.000 -0.980
H5 1.453 1.038 0.000
H6 1.453 -1.038 0.000
H7 -1.453 1.038 0.000
H8 -1.453 -1.038 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.74901.31351.31351.18801.18802.54812.5481
B21.74901.31351.31352.54812.54811.18801.1880
H31.31351.31351.96012.03662.03662.03662.0366
H41.31351.31351.96012.03662.03662.03662.0366
H51.18802.54812.03662.03662.07552.90553.5707
H61.18802.54812.03662.03662.07553.57072.9055
H72.54811.18802.03662.03662.90553.57072.0755
H82.54811.18802.03662.03663.57072.90552.0755

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 83.486 B1 H4 B2 83.486
H3 B1 H4 96.514 H3 B1 H5 108.910
H3 B1 H6 108.910 H3 B2 H4 96.514
H3 B2 H7 108.910 H3 B2 H8 108.910
H4 B1 H5 108.910 H4 B1 H6 108.910
H4 B2 H7 108.910 H4 B2 H8 108.910
H5 B1 H6 121.744 H7 B2 H8 121.744
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.219      
2 B -0.219      
3 H 0.148      
4 H 0.148      
5 H 0.035      
6 H 0.035      
7 H 0.035      
8 H 0.035      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.765 0.000 0.000
y 0.000 -17.801 0.000
z 0.000 0.000 -14.757
Traceless
 xyz
x -2.486 0.000 0.000
y 0.000 -1.040 0.000
z 0.000 0.000 3.526
Polar
3z2-r27.053
x2-y2-0.964
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.937 0.000 0.000
y 0.000 4.834 0.000
z 0.000 0.000 4.178


<r2> (average value of r2) Å2
<r2> 33.003
(<r2>)1/2 5.745