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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: mPW1PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/STO-3G
 hartrees
Energy at 0K-65.142600
Energy at 298.15K-65.146496
HF Energy-65.142600
Nuclear repulsion energy31.855654
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 mPW1PW91/STO-3G
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' 3471 3050 3.82      
2 A' 3322 2920 10.00      
3 A' 2996 2633 13.87      
4 A' 1694 1489 1.44      
5 A' 1540 1354 42.38      
6 A' 1432 1258 37.19      
7 A' 1196 1051 108.59      
8 A' 1071 941 14.56      
9 A' 715 629 0.33      
10 A" 3533 3105 0.07      
11 A" 3136 2757 16.12      
12 A" 1667 1465 4.03      
13 A" 1200 1054 24.01      
14 A" 782 687 0.06      
15 A" 107 94 2.59      

Unscaled Zero Point Vibrational Energy (zpe) 13930.4 cm-1
Scaled (by 0.8789) Zero Point Vibrational Energy (zpe) 12243.4 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 mPW1PW91/STO-3G
ABC
3.23471 0.71674 0.65745

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 -0.683 0.000
B2 -0.013 0.877 0.000
H3 1.047 -0.994 0.000
H4 -0.466 -1.125 0.895
H5 -0.466 -1.125 -0.895
H6 0.011 1.478 -1.009
H7 0.011 1.478 1.009

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56051.10451.09591.09592.38512.3851
B21.56052.15082.23952.23951.17451.1745
H31.10452.15081.76251.76252.86422.8642
H41.09592.23951.76251.78943.25992.6486
H51.09592.23951.76251.78942.64863.2599
H62.38511.17452.86423.25992.64862.0183
H72.38511.17452.86422.64863.25992.0183

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.749 C1 B2 H7 120.749
B2 C1 H3 106.363 B2 C1 H4 113.780
B2 C1 H5 113.780 H3 C1 H4 106.446
H3 C1 H5 106.446 H4 C1 H5 109.447
H6 B2 H7 118.451
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.343      
2 B 0.182      
3 H 0.092      
4 H 0.082      
5 H 0.082      
6 H -0.047      
7 H -0.047      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.124 -0.532 0.000 0.546
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.367 -0.169 0.000
y -0.169 -14.671 0.000
z 0.000 0.000 -14.208
Traceless
 xyz
x 2.072 -0.169 0.000
y -0.169 -1.384 0.000
z 0.000 0.000 -0.689
Polar
3z2-r2-1.378
x2-y22.304
xy-0.169
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.384 -0.037 0.000
y -0.037 1.999 0.000
z 0.000 0.000 1.682


<r2> (average value of r2) Å2
<r2> 28.294
(<r2>)1/2 5.319