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

using model chemistry: QCISD/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-51.890887
Energy at 298.15K-51.893808
HF Energy-51.626092
Nuclear repulsion energy24.817750
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/aug-cc-pVTZ
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 2837 2730 0.07      
2 A1 2125 2045 19.00      
3 A1 1358 1307 3.21      
4 A1 1122 1079 2.62      
5 A1 737 709 3.79      
6 A2 1321 1271 0.00      
7 A2 667 642 0.00      
8 B1 2123 2043 50.11      
9 B1 804 774 1.97      
10 B2 2797 2692 39.80      
11 B2 1397 1345 208.35      
12 B2 551 530 28.10      

Unscaled Zero Point Vibrational Energy (zpe) 8918.9 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 8583.5 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 QCISD/aug-cc-pVTZ
ABC
6.75306 0.84437 0.81334

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.733 -0.115
B2 0.000 -0.733 -0.115
H3 0.899 0.000 0.567
H4 -0.899 0.000 0.567
H5 0.000 1.900 0.007
H6 0.000 -1.900 0.007

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46571.34561.34561.17302.6352
B21.46571.34561.34562.63521.1730
H31.34561.34561.79802.17492.1749
H41.34561.34561.79802.17492.1749
H51.17302.63522.17492.17493.7990
H62.63521.17302.17492.17493.7990

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 57.002 B1 B2 H4 57.002
B1 B2 H6 174.030 B1 H3 B2 65.996
B1 H4 B2 65.996 B2 B1 H3 57.002
B2 B1 H4 57.002 B2 B1 H5 174.030
H3 B1 H4 83.839 H3 B1 H5 119.269
H3 B2 H4 83.839 H3 B2 H6 119.269
H4 B1 H5 119.269 H4 B2 H6 119.269
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability