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All results from a given calculation for CH3BH2 (methylborane)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-65.958050
Energy at 298.15K-65.961974
HF Energy-65.958050
Nuclear repulsion energy31.748491
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 TPSSh/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 A' 3071 2963 16.14      
2 A' 2970 2866 4.80      
3 A' 2590 2499 108.67      
4 A' 1490 1438 0.80      
5 A' 1335 1289 57.57      
6 A' 1264 1220 21.13      
7 A' 1093 1055 65.64      
8 A' 971 937 15.03      
9 A' 544 525 0.82      
10 A" 3121 3012 20.83      
11 A" 2660 2567 149.12      
12 A" 1446 1395 2.28      
13 A" 1068 1031 18.09      
14 A" 674 651 0.71      
15 A" 163 157 1.51      

Unscaled Zero Point Vibrational Energy (zpe) 12229.8 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 11801.7 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 TPSSh/6-31G(2df,p)
ABC
3.20392 0.71478 0.65307

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.019 -0.684 0.000
B2 -0.019 0.876 0.000
H3 1.056 -0.951 0.000
H4 -0.438 -1.152 0.896
H5 -0.438 -1.152 -0.896
H6 0.015 1.490 -1.027
H7 0.015 1.490 1.027

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.55971.10741.09421.09422.40472.4047
B21.55972.11912.25572.25571.19721.1972
H31.10742.11911.75341.75342.84512.8451
H41.09422.25571.75341.79263.29872.6832
H51.09422.25571.75341.79262.68323.2987
H62.40471.19722.84513.29872.68322.0539
H72.40471.19722.84512.68323.29872.0539

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.874 C1 B2 H7 120.874
B2 C1 H3 103.930 B2 C1 H4 115.291
B2 C1 H5 115.291 H3 C1 H4 105.580
H3 C1 H5 105.580 H4 C1 H5 110.002
H6 B2 H7 118.146
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.458      
2 B 0.036      
3 H 0.156      
4 H 0.143      
5 H 0.143      
6 H -0.010      
7 H -0.010      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.107 -0.712 0.000 0.720
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.000 -0.021 0.000
y -0.021 4.342 0.000
z 0.000 0.000 3.770


<r2> (average value of r2) Å2
<r2> 29.146
(<r2>)1/2 5.399