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: B2PLYP/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 B2PLYP/STO-3G
 hartrees
Energy at 0K-65.018586
Energy at 298.15K-65.022494
HF Energy-64.989485
Nuclear repulsion energy31.753259
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 B2PLYP/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' 3472 3472 2.91      
2 A' 3323 3323 5.72      
3 A' 3012 3012 14.92      
4 A' 1711 1711 1.13      
5 A' 1560 1560 31.48      
6 A' 1448 1448 46.26      
7 A' 1211 1211 110.07      
8 A' 1065 1065 12.92      
9 A' 730 730 0.40      
10 A" 3530 3530 0.64      
11 A" 3152 3152 17.63      
12 A" 1687 1687 2.71      
13 A" 1211 1211 22.88      
14 A" 787 787 0.35      
15 A" 107 107 1.91      

Unscaled Zero Point Vibrational Energy (zpe) 14003.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14003.0 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 B2PLYP/STO-3G
ABC
3.22799 0.70953 0.65161

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.012 -0.687 0.000
B2 -0.012 0.883 0.000
H3 1.048 -1.003 0.000
H4 -0.470 -1.127 0.895
H5 -0.470 -1.127 -0.895
H6 0.011 1.483 -1.009
H7 0.011 1.483 1.009

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.57011.10561.09791.09792.39322.3932
B21.57012.16292.24742.24741.17391.1739
H31.10562.16291.76691.76692.87592.8759
H41.09792.24741.76691.79093.26622.6562
H51.09792.24741.76691.79092.65623.2662
H62.39321.17392.87593.26622.65622.0175
H72.39321.17392.87592.65623.26622.0175

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.740 C1 B2 H7 120.740
B2 C1 H3 106.582 B2 C1 H4 113.605
B2 C1 H5 113.605 H3 C1 H4 106.620
H3 C1 H5 106.620 H4 C1 H5 109.295
H6 B2 H7 118.471
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.315      
2 B 0.212      
3 H 0.079      
4 H 0.070      
5 H 0.070      
6 H -0.058      
7 H -0.058      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.105 -0.451 0.000 0.463
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.421 -0.158 0.000
y -0.158 -14.841 0.000
z 0.000 0.000 -14.370
Traceless
 xyz
x 2.185 -0.158 0.000
y -0.158 -1.446 0.000
z 0.000 0.000 -0.739
Polar
3z2-r2-1.478
x2-y22.420
xy-0.158
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.368 -0.032 0.000
y -0.032 1.963 0.000
z 0.000 0.000 1.689


<r2> (average value of r2) Å2
<r2> 28.522
(<r2>)1/2 5.341