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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G4
 hartrees
Energy at 0K-65.869275
Energy at 298.15K-65.864417
HF Energy-65.953941
Nuclear repulsion energy31.792047
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 B3LYP/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' 3072 2965 13.03      
2 A' 2972 2868 4.68      
3 A' 2587 2497 102.25      
4 A' 1479 1427 0.88      
5 A' 1328 1282 58.20      
6 A' 1256 1212 19.02      
7 A' 1094 1055 65.01      
8 A' 973 939 13.35      
9 A' 557 537 0.69      
10 A" 3122 3012 17.54      
11 A" 2657 2564 138.35      
12 A" 1433 1383 2.60      
13 A" 1063 1026 17.99      
14 A" 682 658 0.60      
15 A" 161 156 1.56      

Unscaled Zero Point Vibrational Energy (zpe) 12218.3 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 11790.6 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 B3LYP/6-31G(2df,p)
ABC
3.20900 0.71746 0.65550

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.019 -0.683 0.000
B2 -0.019 0.873 0.000
H3 1.055 -0.951 0.000
H4 -0.439 -1.149 0.896
H5 -0.439 -1.149 -0.896
H6 0.014 1.488 -1.026
H7 0.014 1.488 1.026

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.55601.10671.09371.09372.40132.4013
B21.55602.11692.25142.25141.19631.1963
H31.10672.11691.75281.75282.84362.8436
H41.09372.25141.75281.79143.29432.6792
H51.09372.25141.75281.79142.67923.2943
H62.40131.19632.84363.29432.67922.0512
H72.40131.19632.84362.67923.29432.0512

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.965 C1 B2 H7 120.965
B2 C1 H3 105.660 B2 C1 H4 114.246
B2 C1 H5 114.246 H3 C1 H4 106.026
H3 C1 H5 106.026 H4 C1 H5 109.863
H6 B2 H7 118.055
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.373      
2 B 0.046      
3 H 0.138      
4 H 0.122      
5 H 0.122      
6 H -0.027      
7 H -0.027      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.110 -0.723 0.000 0.732
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 29.116
(<r2>)1/2 5.396