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: HF/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/LANL2DZ
 hartrees
Energy at 0K-65.420979
Energy at 298.15K-65.424967
HF Energy-65.420979
Nuclear repulsion energy31.706946
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 HF/LANL2DZ
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' 3241 2916 39.38      
2 A' 3145 2830 12.89      
3 A' 2667 2400 153.18      
4 A' 1624 1462 7.85      
5 A' 1502 1351 78.44      
6 A' 1306 1175 42.66      
7 A' 1179 1061 71.79      
8 A' 1006 905 12.08      
9 A' 708 637 0.22      
10 A" 3288 2959 50.65      
11 A" 2742 2467 233.11      
12 A" 1592 1432 9.17      
13 A" 1163 1047 23.22      
14 A" 740 666 0.11      
15 A" 106 95 2.18      

Unscaled Zero Point Vibrational Energy (zpe) 13003.3 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 11701.7 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 HF/LANL2DZ
ABC
3.24222 0.70297 0.64485

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.012 -0.694 0.000
B2 -0.012 0.884 0.000
H3 1.036 -1.009 0.000
H4 -0.464 -1.126 0.885
H5 -0.464 -1.126 -0.885
H6 0.010 1.501 -1.021
H7 0.010 1.501 1.021

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.57791.09441.08441.08442.42082.4208
B21.57792.16402.24302.24301.19301.1930
H31.09442.16401.74611.74612.89772.8977
H41.08442.24301.74611.77083.28072.6735
H51.08442.24301.74611.77082.67353.2807
H62.42081.19302.89773.28072.67352.0415
H72.42081.19302.89772.67353.28072.0415

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.147 C1 B2 H7 121.147
B2 C1 H3 106.753 B2 C1 H4 113.517
B2 C1 H5 113.517 H3 C1 H4 106.535
H3 C1 H5 106.535 H4 C1 H5 109.467
H6 B2 H7 117.663
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.676      
2 B 0.070      
3 H 0.184      
4 H 0.186      
5 H 0.186      
6 H 0.025      
7 H 0.025      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.114 -0.456 0.000 0.470
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.699 -0.119 0.000
y -0.119 -16.540 0.000
z 0.000 0.000 -15.828
Traceless
 xyz
x 2.484 -0.119 0.000
y -0.119 -1.776 0.000
z 0.000 0.000 -0.708
Polar
3z2-r2-1.417
x2-y22.840
xy-0.119
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.534 0.009 0.000
y 0.009 3.484 0.000
z 0.000 0.000 3.202


<r2> (average value of r2) Å2
<r2> 29.609
(<r2>)1/2 5.441