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: MP2/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/LANL2DZ
 hartrees
Energy at 0K-51.683430
Energy at 298.15K-51.686086
HF Energy-51.564737
Nuclear repulsion energy24.232877
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 MP2/LANL2DZ
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 2880 2774 0.71      
2 A1 1980 1907 47.97      
3 A1 1318 1270 3.41      
4 A1 1132 1091 6.93      
5 A1 734 707 7.91      
6 A2 1198 1154 0.00      
7 A2 486 468 0.00      
8 B1 1988 1914 111.60      
9 B1 811 782 0.24      
10 B2 2834 2729 43.54      
11 B2 1239 1194 207.82      
12 B2 414 399 111.87      

Unscaled Zero Point Vibrational Energy (zpe) 8507.4 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 8193.4 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/LANL2DZ
ABC
6.22316 0.81024 0.77807

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.751 -0.112
B2 0.000 -0.751 -0.112
H3 0.941 0.000 0.595
H4 -0.941 0.000 0.595
H5 0.000 1.924 -0.033
H6 0.000 -1.924 -0.033

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.50211.39631.39631.17572.6762
B21.50211.39631.39632.67621.1757
H31.39631.39631.88182.23202.2320
H41.39631.39631.88182.23202.2320
H51.17572.67622.23202.23203.8481
H62.67621.17572.23202.23203.8481

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 176.138 B1 H3 B2 65.080
B1 H4 B2 65.080 B2 B1 H3 57.460
B2 B1 H4 57.460 B2 B1 H5 176.138
H3 B1 H4 84.735 H3 B1 H5 120.169
H3 B2 H4 84.735 H3 B2 H6 120.169
H4 B1 H5 120.169 H4 B2 H6 120.169
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability