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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: TPSSh/6-31G**

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**
 hartrees
Energy at 0K-65.956203
Energy at 298.15K-65.960124
HF Energy-65.956203
Nuclear repulsion energy31.729821
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**
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' 3084 2956 17.89      
2 A' 2985 2861 5.26      
3 A' 2602 2495 113.78      
4 A' 1505 1442 1.09      
5 A' 1355 1299 62.49      
6 A' 1274 1221 25.03      
7 A' 1098 1052 73.38      
8 A' 972 931 13.76      
9 A' 560 537 0.63      
10 A" 3134 3005 22.93      
11 A" 2672 2561 166.49      
12 A" 1462 1402 2.63      
13 A" 1075 1031 19.63      
14 A" 681 653 0.66      
15 A" 153 147 1.87      

Unscaled Zero Point Vibrational Energy (zpe) 12304.5 cm-1
Scaled (by 0.9587) Zero Point Vibrational Energy (zpe) 11796.3 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**
ABC
3.20209 0.71330 0.65193

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.018 -0.685 0.000
B2 -0.018 0.877 0.000
H3 1.054 -0.959 0.000
H4 -0.442 -1.148 0.897
H5 -0.442 -1.148 -0.897
H6 0.015 1.492 -1.027
H7 0.015 1.492 1.027

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56181.10651.09431.09432.40722.4072
B21.56182.12582.25412.25411.19731.1973
H31.10652.12581.75441.75442.85312.8531
H41.09432.25411.75441.79313.29772.6820
H51.09432.25411.75441.79312.68203.2977
H62.40721.19732.85313.29772.68202.0533
H72.40721.19732.85312.68203.29772.0533

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.922 C1 B2 H7 120.922
B2 C1 H3 104.329 B2 C1 H4 114.999
B2 C1 H5 114.999 H3 C1 H4 105.715
H3 C1 H5 105.715 H4 C1 H5 110.031
H6 B2 H7 118.056
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.499      
2 B 0.206      
3 H 0.138      
4 H 0.133      
5 H 0.133      
6 H -0.055      
7 H -0.055      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.122 -0.695 0.000 0.705
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 2.805 -0.019 0.000
y -0.019 4.256 0.000
z 0.000 0.000 3.733


<r2> (average value of r2) Å2
<r2> 29.214
(<r2>)1/2 5.405