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

using model chemistry: CCSD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD/6-31G(2df,p)
 hartrees
Energy at 0K-51.863099
Energy at 298.15K-51.866032
HF Energy-51.613731
Nuclear repulsion energy24.839449
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 CCSD/6-31G(2df,p)
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 2882 2725 0.38      
2 A1 2150 2032 13.71      
3 A1 1378 1303 1.96      
4 A1 1161 1098 1.58      
5 A1 753 712 0.90      
6 A2 1331 1258 0.00      
7 A2 672 636 0.00      
8 B1 2148 2031 54.92      
9 B1 820 775 2.25      
10 B2 2842 2687 25.63      
11 B2 1411 1334 206.22      
12 B2 550 520 29.24      

Unscaled Zero Point Vibrational Energy (zpe) 9049.1 cm-1
Scaled (by 0.9455) Zero Point Vibrational Energy (zpe) 8555.9 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 CCSD/6-31G(2df,p)
ABC
6.75051 0.84590 0.81547

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.732 -0.116
B2 0.000 -0.732 -0.116
H3 0.897 0.000 0.570
H4 -0.897 0.000 0.570
H5 0.000 1.897 0.010
H6 0.000 -1.897 0.010

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46401.34531.34531.17172.6320
B21.46401.34531.34532.63201.1717
H31.34531.34531.79322.17152.1715
H41.34531.34531.79322.17152.1715
H51.17172.63202.17152.17153.7938
H62.63201.17172.17152.17153.7938

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 57.035 B1 B2 H4 57.035
B1 B2 H6 173.823 B1 H3 B2 65.930
B1 H4 B2 65.930 B2 B1 H3 57.035
B2 B1 H4 57.035 B2 B1 H5 173.823
H3 B1 H4 83.590 H3 B1 H5 119.086
H3 B2 H4 83.590 H3 B2 H6 119.086
H4 B1 H5 119.086 H4 B2 H6 119.086
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability