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 HBHHBH (Diborane(4) C2V)

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-52.012318
Energy at 298.15K-52.015209
HF Energy-52.012318
Nuclear repulsion energy24.791912
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 mPW1PW91/6-31G*
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 2870 2722 0.19      
2 A1 2147 2036 24.43      
3 A1 1387 1316 3.33      
4 A1 1175 1114 3.41      
5 A1 735 697 0.74      
6 A2 1278 1212 0.00      
7 A2 662 628 0.00      
8 B1 2154 2042 74.24      
9 B1 805 763 2.39      
10 B2 2830 2684 41.08      
11 B2 1355 1285 197.68      
12 B2 540 512 38.10      

Unscaled Zero Point Vibrational Energy (zpe) 8968.8 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 8505.1 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 mPW1PW91/6-31G*
ABC
6.65165 0.84549 0.81542

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.731 -0.119
B2 0.000 -0.731 -0.119
H3 0.901 0.000 0.575
H4 -0.901 0.000 0.575
H5 0.000 1.900 0.019
H6 0.000 -1.900 0.019

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46161.35131.35131.17762.6347
B21.46161.35131.35132.63471.1776
H31.35131.35131.80112.17522.1752
H41.35131.35131.80112.17522.1752
H51.17762.63472.17522.17523.8007
H62.63471.17762.17522.17523.8007

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 57.260 B1 B2 H4 57.260
B1 B2 H6 173.305 B1 H3 B2 65.480
B1 H4 B2 65.480 B2 B1 H3 57.260
B2 B1 H4 57.260 B2 B1 H5 173.305
H3 B1 H4 83.589 H3 B1 H5 118.510
H3 B2 H4 83.589 H3 B2 H6 118.510
H4 B1 H5 118.510 H4 B2 H6 118.510
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.163      
2 B -0.163      
3 H 0.102      
4 H 0.102      
5 H 0.061      
6 H 0.061      


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 1.052 1.052
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.557 0.000 0.000
y 0.000 -13.845 0.000
z 0.000 0.000 -15.973
Traceless
 xyz
x 1.352 0.000 0.000
y 0.000 0.920 0.000
z 0.000 0.000 -2.272
Polar
3z2-r2-4.544
x2-y20.288
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.245 0.000 0.000
y 0.000 5.543 0.000
z 0.000 0.000 2.750


<r2> (average value of r2) Å2
<r2> 24.018
(<r2>)1/2 4.901