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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: B3PW91/6-31G(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 B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-65.923355
Energy at 298.15K-65.927277
HF Energy-65.923355
Nuclear repulsion energy31.798282
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 B3PW91/6-31G(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' 3092 2972 11.88      
2 A' 2989 2873 3.22      
3 A' 2577 2477 103.87      
4 A' 1470 1414 1.32      
5 A' 1319 1268 65.07      
6 A' 1244 1196 14.85      
7 A' 1082 1040 65.02      
8 A' 977 939 12.76      
9 A' 544 523 0.88      
10 A" 3145 3024 13.82      
11 A" 2650 2548 138.00      
12 A" 1425 1370 3.23      
13 A" 1055 1014 18.82      
14 A" 677 651 0.41      
15 A" 165 159 1.79      

Unscaled Zero Point Vibrational Energy (zpe) 12204.6 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 11733.5 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 B3PW91/6-31G(2df,p)
ABC
3.20221 0.71891 0.65629

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.019 -0.682 0.000
B2 -0.019 0.872 0.000
H3 1.056 -0.944 0.000
H4 -0.436 -1.149 0.897
H5 -0.436 -1.149 -0.897
H6 0.015 1.489 -1.028
H7 0.015 1.489 1.028

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.55421.10641.09351.09352.40242.4024
B21.55422.10992.25002.25001.19941.1994
H31.10642.10991.75261.75262.83852.8385
H41.09352.25001.75261.79353.29652.6794
H51.09352.25001.75261.79352.67943.2965
H62.40241.19942.83853.29652.67942.0559
H72.40241.19942.83852.67943.29652.0559

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.957 C1 B2 H7 120.957
B2 C1 H3 103.657 B2 C1 H4 115.276
B2 C1 H5 115.276 H3 C1 H4 105.625
H3 C1 H5 105.625 H4 C1 H5 110.191
H6 B2 H7 117.982
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.467      
2 B 0.034      
3 H 0.163      
4 H 0.148      
5 H 0.148      
6 H -0.014      
7 H -0.014      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.119 -0.748 0.000 0.757
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.371 -0.186 0.000
y -0.186 -15.930 0.000
z 0.000 0.000 -15.179
Traceless
 xyz
x 2.184 -0.186 0.000
y -0.186 -1.655 0.000
z 0.000 0.000 -0.529
Polar
3z2-r2-1.057
x2-y22.560
xy-0.186
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.995 -0.018 0.000
y -0.018 4.319 0.000
z 0.000 0.000 3.764


<r2> (average value of r2) Å2
<r2> 29.040
(<r2>)1/2 5.389