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

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-51.446543
Energy at 298.15K-51.448899
HF Energy-51.291943
Nuclear repulsion energy24.499634
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 MP4/3-21G
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 2850 2764        
2 A1 2006 1946        
3 A1 1338 1297        
4 A1 1131 1097        
5 A1 684 663        
6 A2 1245 1207        
7 A2 453 439        
8 B1 1973 1913        
9 B1 781 757        
10 B2 2806 2722        
11 B2 1285 1246        
12 B2 197 191        

Unscaled Zero Point Vibrational Energy (zpe) 8373.6 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 8120.7 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 MP4/3-21G
ABC
6.48610 0.82662 0.79297

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.742 -0.116
B2 0.000 -0.742 -0.116
H3 0.927 0.000 0.566
H4 -0.927 0.000 0.566
H5 0.000 1.916 0.013
H6 0.000 -1.916 0.013

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.48431.36911.36911.18072.6611
B21.48431.36911.36912.66111.1807
H31.36911.36911.85412.19892.1989
H41.36911.36911.85412.19892.1989
H51.18072.66112.19892.19893.8317
H62.66111.18072.19892.19893.8317

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 57.174 B1 B2 H4 57.174
B1 B2 H6 173.739 B1 H3 B2 65.651
B1 H4 B2 65.651 B2 B1 H3 57.174
B2 B1 H4 57.174 B2 B1 H5 173.739
H3 B1 H4 85.235 H3 B1 H5 118.985
H3 B2 H4 85.235 H3 B2 H6 118.985
H4 B1 H5 118.985 H4 B2 H6 118.985
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability