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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G(2df,p)
 hartrees
Energy at 0K-65.849349
Energy at 298.15K-65.853278
HF Energy-65.849349
Nuclear repulsion energy31.817742
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 PBE1PBE/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' 3109 2975 10.53      
2 A' 3003 2874 3.08      
3 A' 2583 2472 100.30      
4 A' 1471 1408 1.49      
5 A' 1320 1263 66.93      
6 A' 1243 1189 13.38      
7 A' 1081 1034 64.69      
8 A' 983 940 12.27      
9 A' 539 516 0.99      
10 A" 3164 3028 11.64      
11 A" 2658 2544 132.62      
12 A" 1425 1364 3.39      
13 A" 1056 1011 18.84      
14 A" 675 646 0.38      
15 A" 171 164 1.82      

Unscaled Zero Point Vibrational Energy (zpe) 12240.2 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 11713.9 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 PBE1PBE/6-31G(2df,p)
ABC
3.20043 0.72056 0.65751

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.020 -0.682 0.000
B2 -0.020 0.871 0.000
H3 1.056 -0.938 0.000
H4 -0.434 -1.149 0.897
H5 -0.434 -1.149 -0.897
H6 0.015 1.487 -1.029
H7 0.015 1.487 1.029

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.55241.10621.09301.09302.40102.4010
B21.55242.10422.24852.24851.20001.2000
H31.10622.10421.75251.75252.83242.8324
H41.09302.24851.75251.79423.29572.6777
H51.09302.24851.75251.79422.67773.2957
H62.40101.20002.83243.29572.67772.0574
H72.40101.20002.83242.67773.29572.0574

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.931 C1 B2 H7 120.931
B2 C1 H3 103.363 B2 C1 H4 115.310
B2 C1 H5 115.310 H3 C1 H4 105.659
H3 C1 H5 105.659 H4 C1 H5 110.317
H6 B2 H7 118.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.471      
2 B 0.014      
3 H 0.166      
4 H 0.151      
5 H 0.151      
6 H -0.006      
7 H -0.006      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.121 -0.745 0.000 0.755
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.406 -0.186 0.000
y -0.186 -15.950 0.000
z 0.000 0.000 -15.193
Traceless
 xyz
x 2.165 -0.186 0.000
y -0.186 -1.651 0.000
z 0.000 0.000 -0.514
Polar
3z2-r2-1.029
x2-y22.544
xy-0.186
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.986 -0.016 0.000
y -0.016 4.302 0.000
z 0.000 0.000 3.752


<r2> (average value of r2) Å2
<r2> 29.022
(<r2>)1/2 5.387