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

using model chemistry: QCISD(T)=FULL/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 QCISD(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-51.854248
Energy at 298.15K-51.857083
HF Energy-51.608834
Nuclear repulsion energy24.427283
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 QCISD(T)=FULL/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 2810 2726        
2 A1 2087 2024        
3 A1 1323 1283        
4 A1 1102 1069        
5 A1 715 694        
6 A2 1294 1255        
7 A2 632 613        
8 B1 2087 2025        
9 B1 793 769        
10 B2 2768 2685        
11 B2 1362 1321        
12 B2 486 472        

Unscaled Zero Point Vibrational Energy (zpe) 8729.2 cm-1
Scaled (by 0.9701) Zero Point Vibrational Energy (zpe) 8468.2 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 QCISD(T)=FULL/aug-cc-pVDZ
ABC
6.59280 0.81475 0.78560

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.748 -0.118
B2 0.000 -0.748 -0.118
H3 0.908 0.000 0.573
H4 -0.908 0.000 0.573
H5 0.000 1.926 0.019
H6 0.000 -1.926 0.019

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.49581.36471.36471.18632.6777
B21.49581.36471.36472.67771.1863
H31.36471.36471.81632.20072.2007
H41.36471.36471.81632.20072.2007
H51.18632.67772.20072.20073.8527
H62.67771.18632.20072.20073.8527

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 56.766 B1 B2 H4 56.766
B1 B2 H6 173.376 B1 H3 B2 66.467
B1 H4 B2 66.467 B2 B1 H3 56.766
B2 B1 H4 56.766 B2 B1 H5 173.376
H3 B1 H4 83.438 H3 B1 H5 119.074
H3 B2 H4 83.438 H3 B2 H6 119.074
H4 B1 H5 119.074 H4 B2 H6 119.074
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability