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All results from a given calculation for HBHHBH (Diborane(4) C2V)

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-52.018608
Energy at 298.15K-52.021504
HF Energy-52.018608
Nuclear repulsion energy24.626661
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-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2839 2721 0.14      
2 A1 2099 2011 19.55      
3 A1 1366 1309 3.08      
4 A1 1111 1065 1.92      
5 A1 728 698 5.43      
6 A2 1259 1206 0.00      
7 A2 654 627 0.00      
8 B1 2114 2026 44.19      
9 B1 791 758 0.85      
10 B2 2797 2680 32.83      
11 B2 1333 1277 193.27      
12 B2 547 525 33.72      

Unscaled Zero Point Vibrational Energy (zpe) 8819.0 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 8451.3 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-pVDZ
ABC
6.56913 0.83324 0.80425

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.737 -0.117
B2 0.000 -0.737 -0.117
H3 0.904 0.000 0.585
H4 -0.904 0.000 0.585
H5 0.000 1.911 0.002
H6 0.000 -1.911 0.002

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.47341.36161.36161.18062.6507
B21.47341.36161.36162.65071.1806
H31.36161.36161.80832.19342.1934
H41.36161.36161.80832.19342.1934
H51.18062.65072.19342.19343.8226
H62.65071.18062.19342.19343.8226

picture of Diborane(4) C2V state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H3 57.244 B1 B2 H4 57.244
B1 B2 H6 174.206 B1 H3 B2 65.511
B1 H4 B2 65.511 B2 B1 H3 57.244
B2 B1 H4 57.244 B2 B1 H5 174.206
H3 B1 H4 83.221 H3 B1 H5 119.091
H3 B2 H4 83.221 H3 B2 H6 119.091
H4 B1 H5 119.091 H4 B2 H6 119.091
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.933      
2 B -0.933      
3 H 0.512      
4 H 0.512      
5 H 0.421      
6 H 0.421      


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 0.824 0.824
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.089 0.000 0.000
y 0.000 -14.045 0.000
z 0.000 0.000 -16.604
Traceless
 xyz
x 1.235 0.000 0.000
y 0.000 1.302 0.000
z 0.000 0.000 -2.536
Polar
3z2-r2-5.073
x2-y2-0.045
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.340 0.000 0.000
y 0.000 6.158 0.000
z 0.000 0.000 4.723


<r2> (average value of r2) Å2
<r2> 24.505
(<r2>)1/2 4.950