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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: TPSSh/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-65.958368
Energy at 298.15K-65.962286
HF Energy-65.958368
Nuclear repulsion energy31.720843
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/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3078 2963 19.41      
2 A' 2978 2866 5.35      
3 A' 2597 2500 126.54      
4 A' 1496 1440 2.79      
5 A' 1347 1296 74.41      
6 A' 1267 1219 25.54      
7 A' 1093 1052 69.57      
8 A' 968 932 14.23      
9 A' 555 534 0.55      
10 A" 3128 3011 22.85      
11 A" 2664 2564 185.19      
12 A" 1453 1398 4.86      
13 A" 1071 1030 19.49      
14 A" 679 654 1.20      
15 A" 154 148 1.80      

Unscaled Zero Point Vibrational Energy (zpe) 12263.3 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 11803.4 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/6-31+G**
ABC
3.19841 0.71309 0.65167

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.018 -0.685 0.000
B2 -0.018 0.877 0.000
H3 1.055 -0.958 0.000
H4 -0.442 -1.148 0.897
H5 -0.442 -1.148 -0.897
H6 0.015 1.491 -1.027
H7 0.015 1.491 1.027

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56221.10711.09481.09482.40722.4072
B21.56222.12582.25502.25501.19751.1975
H31.10712.12581.75521.75522.85272.8527
H41.09482.25501.75521.79423.29832.6818
H51.09482.25501.75521.79422.68183.2983
H62.40721.19752.85273.29832.68182.0546
H72.40721.19752.85272.68183.29832.0546

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.872 C1 B2 H7 120.872
B2 C1 H3 104.277 B2 C1 H4 115.007
B2 C1 H5 115.007 H3 C1 H4 105.715
H3 C1 H5 105.715 H4 C1 H5 110.059
H6 B2 H7 118.156
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.605      
2 B 0.178      
3 H 0.165      
4 H 0.168      
5 H 0.168      
6 H -0.037      
7 H -0.037      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.110 -0.655 0.000 0.664
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 3.034 -0.029 0.000
y -0.029 4.725 0.000
z 0.000 0.000 4.068


<r2> (average value of r2) Å2
<r2> 29.461
(<r2>)1/2 5.428