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All results from a given calculation for B2H6 (Diborane)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at CCSD=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-53.118409
Energy at 298.15K-53.124367
HF Energy-52.824196
Nuclear repulsion energy32.213768
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=FULL/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 Ag 2691 2534        
2 Ag 2223 2093        
3 Ag 1230 1158        
4 Ag 838 789        
5 Au 873 822        
6 B1g 2774 2612        
7 B1g 950 894        
8 B1u 2054 1934 12.08      
9 B1u 1017 958 25.50      
10 B2g 1911 1800        
11 B2g 917 864        
12 B2u 2786 2623 131.87      
13 B2u 1001 943 0.42      
14 B2u 376 354 17.29      
15 B3g 1107 1042        
16 B3u 2677 2521 129.87      
17 B3u 1772 1668 483.60      
18 B3u 1216 1145 71.61      

Unscaled Zero Point Vibrational Energy (zpe) 14206.9 cm-1
Scaled (by 0.9416) Zero Point Vibrational Energy (zpe) 13377.2 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 CCSD=FULL/6-31G(2df,p)
ABC
2.69221 0.61672 0.56639

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.877 0.000 0.000
B2 -0.877 0.000 0.000
H3 0.000 0.000 0.975
H4 0.000 0.000 -0.975
H5 1.450 1.038 0.000
H6 1.450 -1.038 0.000
H7 -1.450 1.038 0.000
H8 -1.450 -1.038 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.75421.31151.31151.18591.18592.54852.5485
B21.75421.31151.31152.54852.54851.18591.1859
H31.31151.31151.95012.03272.03272.03272.0327
H41.31151.31151.95012.03272.03272.03272.0327
H51.18592.54852.03272.03272.07642.90063.5672
H61.18592.54852.03272.03272.07643.56722.9006
H72.54851.18592.03272.03272.90063.56722.0764
H82.54851.18592.03272.03273.56722.90062.0764

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 83.944 B1 H4 B2 83.944
H3 B1 H4 96.056 H3 B1 H5 108.859
H3 B1 H6 108.859 H3 B2 H4 96.056
H3 B2 H7 108.859 H3 B2 H8 108.859
H4 B1 H5 108.859 H4 B1 H6 108.859
H4 B2 H7 108.859 H4 B2 H8 108.859
H5 B1 H6 122.193 H7 B2 H8 122.193
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability