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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: mPW1PW91/6-31G(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 mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-65.927613
Energy at 298.15K-65.931543
HF Energy-65.927613
Nuclear repulsion energy31.835166
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 mPW1PW91/6-31G(2df,p)
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' 3111 2970 11.42      
2 A' 3007 2871 3.05      
3 A' 2589 2472 102.85      
4 A' 1478 1411 1.42      
5 A' 1326 1266 65.49      
6 A' 1250 1193 14.96      
7 A' 1086 1037 65.88      
8 A' 982 937 12.59      
9 A' 546 522 0.89      
10 A" 3165 3022 12.92      
11 A" 2663 2543 137.00      
12 A" 1432 1368 3.32      
13 A" 1060 1012 18.99      
14 A" 679 648 0.42      
15 A" 166 158 1.74      

Unscaled Zero Point Vibrational Energy (zpe) 12271.0 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 11715.1 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 mPW1PW91/6-31G(2df,p)
ABC
3.20917 0.72044 0.65769

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(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 0.871 0.000
H3 1.054 -0.942 0.000
H4 -0.436 -1.147 0.896
H5 -0.436 -1.147 -0.896
H6 0.015 1.487 -1.027
H7 0.015 1.487 1.027

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.55291.10471.09181.09182.40002.4000
B21.55292.10682.24692.24691.19801.1980
H31.10472.10681.75071.75072.83442.8344
H41.09182.24691.75071.79133.29222.6757
H51.09182.24691.75071.79132.67573.2922
H62.40001.19802.83443.29222.67572.0538
H72.40001.19802.83442.67573.29222.0538

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.944 C1 B2 H7 120.944
B2 C1 H3 103.599 B2 C1 H4 115.223
B2 C1 H5 115.223 H3 C1 H4 105.694
H3 C1 H5 105.694 H4 C1 H5 110.235
H6 B2 H7 118.006
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.477      
2 B 0.027      
3 H 0.165      
4 H 0.151      
5 H 0.151      
6 H -0.009      
7 H -0.009      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.117 -0.733 0.000 0.742
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.360 -0.183 0.000
y -0.183 -15.917 0.000
z 0.000 0.000 -15.163
Traceless
 xyz
x 2.181 -0.183 0.000
y -0.183 -1.656 0.000
z 0.000 0.000 -0.525
Polar
3z2-r2-1.049
x2-y22.558
xy-0.183
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.978 -0.016 0.000
y -0.016 4.281 0.000
z 0.000 0.000 3.741


<r2> (average value of r2) Å2
<r2> 28.986
(<r2>)1/2 5.384