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All results from a given calculation for B2H6 (Diborane)

using model chemistry: mPW1PW91/STO-3G

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/STO-3G
 hartrees
Energy at 0K-52.622705
Energy at 298.15K-52.628533
HF Energy-52.622705
Nuclear repulsion energy32.049625
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/STO-3G
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 3052 2682 0.00 59.98 0.17 0.29
2 Ag 2362 2076 0.00 35.77 0.24 0.38
3 Ag 1340 1178 0.00 17.33 0.74 0.85
4 Ag 852 749 0.00 11.30 0.42 0.59
5 Au 939 825 0.00 0.00 0.00 0.00
6 B1g 3205 2817 0.00 42.98 0.75 0.86
7 B1g 1025 901 0.00 7.12 0.75 0.86
8 B1u 2250 1977 0.59 0.00 0.00 0.00
9 B1u 1102 969 43.87 0.00 0.00 0.00
10 B2g 1879 1651 0.00 8.97 0.75 0.86
11 B2g 934 821 0.00 0.43 0.75 0.86
12 B2u 3207 2819 1.60 0.00 0.00 0.00
13 B2u 1063 934 0.01 0.00 0.00 0.00
14 B2u 367 322 19.99 0.00 0.00 0.00
15 B3g 1205 1059 0.00 17.09 0.75 0.86
16 B3u 3050 2681 9.75 0.00 0.00 0.00
17 B3u 1704 1498 571.17 0.00 0.00 0.00
18 B3u 1331 1170 99.01 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 15433.0 cm-1
Scaled (by 0.8789) Zero Point Vibrational Energy (zpe) 13564.1 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 mPW1PW91/STO-3G
ABC
2.72791 0.59795 0.55420

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/STO-3G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.896 0.000 0.000
B2 -0.896 0.000 0.000
H3 0.000 0.000 0.990
H4 0.000 0.000 -0.990
H5 1.456 1.021 0.000
H6 1.456 -1.021 0.000
H7 -1.456 1.021 0.000
H8 -1.456 -1.021 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.79131.33531.33531.16491.16492.56422.5642
B21.79131.33531.33532.56422.56421.16491.1649
H31.33531.33531.98072.03582.03582.03582.0358
H41.33531.33531.98072.03582.03582.03582.0358
H51.16492.56422.03582.03582.04212.91293.5574
H61.16492.56422.03582.03582.04213.55742.9129
H72.56421.16492.03582.03582.91293.55742.0421
H82.56421.16492.03582.03583.55742.91292.0421

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.251 B1 H4 B2 84.251
H3 B1 H4 95.749 H3 B1 H5 108.839
H3 B1 H6 108.839 H3 B2 H4 95.749
H3 B2 H7 108.839 H3 B2 H8 108.839
H4 B1 H5 108.839 H4 B1 H6 108.839
H4 B2 H7 108.839 H4 B2 H8 108.839
H5 B1 H6 122.445 H7 B2 H8 122.445
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.014      
2 B -0.014      
3 H 0.038      
4 H 0.038      
5 H -0.012      
6 H -0.012      
7 H -0.012      
8 H -0.012      


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 -17.716 0.000 0.000
y 0.000 -16.129 0.000
z 0.000 0.000 -14.036
Traceless
 xyz
x -2.633 0.000 0.000
y 0.000 -0.253 0.000
z 0.000 0.000 2.886
Polar
3z2-r25.773
x2-y2-1.586
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.868 0.000 0.000
y 0.000 1.793 0.000
z 0.000 0.000 1.516


<r2> (average value of r2) Å2
<r2> 32.608
(<r2>)1/2 5.710