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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: HF/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-65.452016
Energy at 298.15K-65.456011
HF Energy-65.452016
Nuclear repulsion energy31.770064
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/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' 3204 2901 22.81      
2 A' 3116 2822 7.16      
3 A' 2665 2413 119.63      
4 A' 1595 1445 1.06      
5 A' 1451 1313 45.42      
6 A' 1346 1219 41.30      
7 A' 1161 1051 83.06      
8 A' 991 898 12.52      
9 A' 637 577 1.41      
10 A" 3247 2940 29.04      
11 A" 2728 2471 179.93      
12 A" 1558 1411 2.37      
13 A" 1142 1034 21.63      
14 A" 724 655 1.86      
15 A" 133 121 0.54      

Unscaled Zero Point Vibrational Energy (zpe) 12849.8 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 11635.5 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/6-31G(2df,p)
ABC
3.23680 0.70883 0.64940

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.014 -0.690 0.000
B2 -0.014 0.880 0.000
H3 1.041 -0.983 0.000
H4 -0.456 -1.133 0.887
H5 -0.456 -1.133 -0.887
H6 0.013 1.494 -1.022
H7 0.013 1.494 1.022

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.57071.09531.08531.08532.41222.4122
B21.57072.14152.24392.24391.19281.1928
H31.09532.14151.74671.74672.87062.8706
H41.08532.24391.74671.77403.28142.6722
H51.08532.24391.74671.77402.67223.2814
H62.41221.19282.87063.28142.67222.0446
H72.41221.19282.87062.67223.28142.0446

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.982 C1 B2 H7 120.982
B2 C1 H3 105.498 B2 C1 H4 114.068
B2 C1 H5 114.068 H3 C1 H4 106.456
H3 C1 H5 106.456 H4 C1 H5 109.631
H6 B2 H7 117.970
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.496      
2 B 0.131      
3 H 0.146      
4 H 0.142      
5 H 0.142      
6 H -0.032      
7 H -0.032      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.050 -0.501 0.000 0.504
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.442 -0.141 0.000
y -0.141 -16.426 0.000
z 0.000 0.000 -15.598
Traceless
 xyz
x 2.570 -0.141 0.000
y -0.141 -1.906 0.000
z 0.000 0.000 -0.665
Polar
3z2-r2-1.330
x2-y22.984
xy-0.141
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.877 -0.000 0.000
y -0.000 3.956 0.000
z 0.000 0.000 3.649


<r2> (average value of r2) Å2
<r2> 29.366
(<r2>)1/2 5.419