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

using model chemistry: G2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at G2
 hartrees
Energy at 0K-51.882474
Energy at 298.15K-51.877997
HF Energy-51.602294
Nuclear repulsion energy24.843021
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 HF/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2965 2794 0.86      
2 A1 2188 2061 52.57      
3 A1 1439 1356 8.32      
4 A1 1280 1206 19.39      
5 A1 799 753 0.42      
6 A2 1284 1210 0.00      
7 A2 565 533 0.00      
8 B1 2183 2056 140.52      
9 B1 862 812 2.56      
10 B2 2925 2756 73.87      
11 B2 1419 1337 305.55      
12 B2 574 540 78.96      

Unscaled Zero Point Vibrational Energy (zpe) 9240.6 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 8706.5 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 MP2=FULL/6-31G*
ABC
6.82307 0.85166 0.81770

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.729 -0.114
B2 0.000 -0.729 -0.114
H3 0.904 0.000 0.549
H4 -0.904 0.000 0.549
H5 0.000 1.897 0.023
H6 0.000 -1.897 0.023

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.45881.33731.33731.17592.6302
B21.45881.33731.33732.63021.1759
H31.33731.33731.80752.16632.1663
H41.33731.33731.80752.16632.1663
H51.17592.63022.16632.16633.7945
H62.63021.17592.16632.16633.7945

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 57.460 B1 B2 H4 57.460
B1 B2 H6 174.730 B1 H3 B2 65.080
B1 H4 B2 65.080 B2 B1 H3 57.460
B2 B1 H4 57.460 B2 B1 H5 174.730
H3 B1 H4 83.707 H3 B1 H5 119.228
H3 B2 H4 83.707 H3 B2 H6 119.228
H4 B1 H5 119.228 H4 B2 H6 119.228
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability