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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: B2PLYP/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/6-31G
 hartrees
Energy at 0K-65.800066
Energy at 298.15K-65.803975
HF Energy-65.751876
Nuclear repulsion energy31.669719
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 B2PLYP/6-31G
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' 3103 3103 18.19      
2 A' 3009 3009 3.83      
3 A' 2609 2609 106.16      
4 A' 1540 1540 4.11      
5 A' 1409 1409 59.02      
6 A' 1289 1289 40.40      
7 A' 1122 1122 81.99      
8 A' 982 982 12.27      
9 A' 642 642 0.06      
10 A" 3151 3151 23.55      
11 A" 2682 2682 170.08      
12 A" 1507 1507 5.59      
13 A" 1109 1109 24.01      
14 A" 715 715 0.56      
15 A" 98 98 2.17      

Unscaled Zero Point Vibrational Energy (zpe) 12482.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12482.4 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 B2PLYP/6-31G
ABC
3.19591 0.70862 0.64888

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 -0.688 0.000
B2 -0.013 0.879 0.000
H3 1.048 -1.000 0.000
H4 -0.463 -1.131 0.895
H5 -0.463 -1.131 -0.895
H6 0.013 1.497 -1.025
H7 0.013 1.497 1.025

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56711.10601.09511.09512.41422.4142
B21.56712.15762.24582.24581.19761.1976
H31.10602.15761.76091.76092.89092.8909
H41.09512.24581.76091.78963.28982.6746
H51.09512.24581.76091.78962.67463.2898
H62.41421.19762.89093.28982.67462.0505
H72.41421.19762.89092.67463.28982.0505

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.091 C1 B2 H7 121.091
B2 C1 H3 106.356 B2 C1 H4 113.867
B2 C1 H5 113.867 H3 C1 H4 106.265
H3 C1 H5 106.265 H4 C1 H5 109.592
H6 B2 H7 117.756
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.615      
2 B 0.287      
3 H 0.158      
4 H 0.149      
5 H 0.149      
6 H -0.064      
7 H -0.064      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.127 -0.635 0.000 0.648
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.561 -0.189 0.000
y -0.189 -16.343 0.000
z 0.000 0.000 -15.729
Traceless
 xyz
x 2.475 -0.189 0.000
y -0.189 -1.698 0.000
z 0.000 0.000 -0.777
Polar
3z2-r2-1.554
x2-y22.782
xy-0.189
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.627 -0.023 0.000
y -0.023 4.022 0.000
z 0.000 0.000 3.631


<r2> (average value of r2) Å2
<r2> 29.481
(<r2>)1/2 5.430