return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for B2H4 (Diborane(4) D2d)

using model chemistry: B3LYPultrafine/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B3LYPultrafine/6-31+G**
 hartrees
Energy at 0K-52.050983
Energy at 298.15K-52.053416
HF Energy-52.050983
Nuclear repulsion energy22.304969
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 B3LYPultrafine/6-31+G**
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 2584 2488 0.00      
2 A1 1205 1160 0.00      
3 A1 870 838 0.00      
4 B1 553 532 0.00      
5 B2 2562 2467 79.10      
6 B2 1140 1098 3.22      
7 E 2626 2528 98.16      
7 E 2626 2528 98.16      
8 E 994 957 26.64      
8 E 994 957 26.64      
9 E 400 385 2.94      
9 E 400 385 2.94      

Unscaled Zero Point Vibrational Energy (zpe) 8477.1 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 8160.9 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 B3LYPultrafine/6-31+G**
ABC
4.05389 0.66252 0.66252

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31+G**

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.819
B2 0.000 0.000 -0.819
H3 0.000 1.016 1.459
H4 0.000 -1.016 1.459
H5 1.016 0.000 -1.459
H6 -1.016 0.000 -1.459

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63881.20021.20022.49452.4945
B21.63882.49452.49451.20021.2002
H31.20022.49452.03133.25233.2523
H41.20022.49452.03133.25233.2523
H52.49451.20023.25233.25232.0313
H62.49451.20023.25233.25232.0313

picture of Diborane(4) D2d state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H5 122.198 B1 B2 H6 122.198
B2 B1 H3 122.198 B2 B1 H4 122.198
H3 B1 H4 115.603 H5 B2 H6 115.603
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.010      
2 B 0.010      
3 H -0.005      
4 H -0.005      
5 H -0.005      
6 H -0.005      


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 -14.703 0.000 0.000
y 0.000 -14.703 0.000
z 0.000 0.000 -16.808
Traceless
 xyz
x 1.053 0.000 0.000
y 0.000 1.053 0.000
z 0.000 0.000 -2.105
Polar
3z2-r2-4.211
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.566 0.000 0.000
y 0.000 3.566 0.000
z 0.000 0.000 5.905


<r2> (average value of r2) Å2
<r2> 28.977
(<r2>)1/2 5.383