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 CH3BH2 (methylborane)

using model chemistry: TPSSh/STO-3G

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/STO-3G
 hartrees
Energy at 0K-65.180410
Energy at 298.15K-65.184293
HF Energy-65.180410
Nuclear repulsion energy31.738973
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/STO-3G
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' 3420 3420 3.33      
2 A' 3279 3279 8.85      
3 A' 2990 2990 14.90      
4 A' 1692 1692 1.33      
5 A' 1536 1536 37.40      
6 A' 1437 1437 44.70      
7 A' 1196 1196 109.75      
8 A' 1056 1056 15.55      
9 A' 706 706 0.37      
10 A" 3483 3483 0.64      
11 A" 3128 3128 18.39      
12 A" 1665 1665 2.76      
13 A" 1198 1198 22.67      
14 A" 774 774 0.22      
15 A" 107 107 2.44      

Unscaled Zero Point Vibrational Energy (zpe) 13831.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13831.8 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/STO-3G
ABC
3.21850 0.71061 0.65217

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 -0.685 0.000
B2 -0.013 0.882 0.000
H3 1.051 -1.000 0.000
H4 -0.467 -1.131 0.898
H5 -0.467 -1.131 -0.898
H6 0.011 1.482 -1.010
H7 0.011 1.482 1.010

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56751.10951.10051.10052.39112.3911
B21.56752.16232.25072.25071.17501.1750
H31.10952.16231.76841.76842.87472.8747
H41.10052.25071.76841.79573.27052.6585
H51.10052.25071.76841.79572.65853.2705
H62.39111.17502.87473.27052.65852.0204
H72.39111.17502.87472.65853.27052.0204

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.686 C1 B2 H7 120.686
B2 C1 H3 106.496 B2 C1 H4 113.894
B2 C1 H5 113.894 H3 C1 H4 106.303
H3 C1 H5 106.303 H4 C1 H5 109.344
H6 B2 H7 118.576
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.314      
2 B 0.207      
3 H 0.081      
4 H 0.070      
5 H 0.070      
6 H -0.057      
7 H -0.057      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.119 -0.510 0.000 0.524
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 1.407 -0.042 0.000
y -0.042 2.058 0.000
z 0.000 0.000 1.707


<r2> (average value of r2) Å2
<r2> 28.514
(<r2>)1/2 5.340